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All Subsea Cables Renewable Energy Safety News Downloads

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Emergency Contact Numbers

The numbers below are the emergency contact numbers for Subsea Cables and Renewable Energy Structures. These phone numbers relate to each offshore structure and may be used in case of an emergency, or urgent situation.

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Emergency Procedures

Please keep clear of and do not damage subsea cables/structures. You risk the loss of your gear and catch, and international communications can be disrupted. These cables carry high voltages and can be dangerous to life. Many cables have high breaking strains, some over 70 tonnes. Cables will usually lie buried in the seabed, although because the seabed can move, there is no guarantee they will remain in the same place.

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Reducing Risks Whilst Fishing

It is essential to be aware of the locations of subsea cables and renewable energy infrastructure, when fishing in the vicinity of such structures. It is essential you have all the information in relation to their positions available to you and the KIS-ORCA project is designed to provide exactly that for all seabed users. Charts, fishing plotter files and an interactive map, showing subsea cables and renewable energy structures surrounding the UK, may be viewed or downloaded, free of charge.

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The Risks of Fishing near Cables & Renewable Energy Structures

The potential risks associated with the offshore renewable and subsea cable industries come in two distinct categories - surface structures and subsurface structures. Each type of structure may potentially be a risk to fishing activities. The information below describes these hazards, with the subsequent sections explaining the emergency procedures.

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Tidal Device Principles

Tidal devices exploit kinetic energy in the tidal flow of water caused by the interaction of the gravitational fields of the earth, moon and sun. Tidal currents are magnified by topographical features, such as headlands, inlets and straits, or sea bed channels. Many of the devices that use these currents are broadly similar to submerged wind turbines. Sea water is around 800 times denser than air but average flow speeds for viable projects are of the order of one fifth of corresponding wind speeds, giving a power density of around 5-10 times. This means that for a tidal device of the same rating as a wind turbine, the rotor will be smaller. Individual tidal devices are unlikely to reach the same rated power as offshore wind turbines; however, as to have sufficient space to deploy such large devices requires development of deeper water sites that generally have less significant tidal flows. EMEC has identified four main types of tidal energy convertors that are outline below.

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Wave Device Principles

Waves are created by the interaction of wind with the surface of the sea, sometimes over very long distances.  The size of the waves is influenced by wind, the local seabed bathymetry (which can focus or disperse the energy of the waves) and currents.  Waves offer a large source of energy which can be converted into electricity by a wave energy converter (WEC).  Some wave energy converters have been developed to extract energy from the shoreline, others from waters offshore, some with a hydraulic power take-off system and some with an electrical power take-off system.  EMEC has identified six main types of wave energy converter that are outlined below. 

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Wave & Tidal Devices – Overview

The United Kingdom's wave and tidal stream energy industry is the current global leader, with more installed capacity than the rest of the world combined. Our strength has been built on established British marine engineering skills, the creation of world-first testing facilities and the strength of the energy resource found in UK waters. The UK is proud to have developed the first commercial scale wave and tidal stream projects in 1998 and 2003 respectively but the industry is now on the cusp of commercial viability as we move through the phases of development.

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Wind Farms – Installation Methods

Life cycle stages

Lease award and Pre-construction

Once a developer has obtained a lease from the Crown Estate they will start to appraise the zone or lease area. This requires a number of surveys to be completed including boat or aerial based bird and marine mammals surveys, benthic grabs and fish surveys.

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Wind Farms – Design of Structures Installed

Offshore wind farms consist of a number of connected elements. These include the turbines, foundations, array cables, offshore substation, export cable and onshore substation and infrastructure. These items are installed using a range of different vessels and then serviced by either smaller crew transfer vessels or helicopters.

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Windfarms - Overview

Offshore wind farms consist of a number of wind turbines which sit on foundations, secured to the seafloor, which produce electricity. This electricity is transmitted to where it is needed through a series of cables and substations. The first offshore wind farm was installed in Denmark in 1991 and the industry has grown rapidly since then with 3.3GW installed across Europe (1.8GW of which is in the UK).  China, US, Japan and South Korea have also started to develop offshore wind farms.

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Terms & Conditions

  Terms and Conditions - KIS-ORCA Website This website, www.kis-orca.org, ("the Site") is provided to you ("you" meaning any person, firm, partnership, corporate body or any other legal person accessing or otherwise using, or benefitting from the use of, this Site) by the Kingfisher Division of Seafish, ESCA and its Members. Data which is provided via this Site, including Plotter Data, is provided free of charge. Kingfisher Information Services and ESCA DO NOT verify data provided on the Site, including Plotter Data. Please read these Terms carefully before using this Site: 1 AUTHORITY AND LICENCE FOR USE OF THE SITE 1.1 In making use of the Site, you agree to be bound by these Terms which form the sole agreement between you as user of the Site and us ("Agreement"). 1.2 If you do not agree to be bound by these Terms, you should not use the Site. 1.3 You acknowledge that your use of the Site: 1.3.1 may be limited at any time by us; and 1.3.2 may be suspended or terminated at any time by us. 2 DISCLAIMER 2.1 We give you no warranty or assurance, except as set out in Condition 6 (Our Obligations). We declare and you acknowledge that all implied warranties and conditions are excluded to the maximum extent permitted by law. 2.2 We are not responsible for any: 2.2.1 typographical errors or omissions on the Site; 2.2.2 data, information, text, music, sound, photos or graphics or other material ("Content") that you may have access to as part of, or through your use of the Site, including, but not limited to, other websites that you may access via links provided on our Site; or 2.2.3 Content you may be exposed to through use of the Site that you may find offensive, indecent or objectionable. 2.3 We do not warrant that the Content of this Site is accurate, complete, reliable, current or error-free. 3 LIABILITY 3.1 In respect of use of Plotter Data, we shall have no liability whatsoever to you where the Plotter Data: 3.1.1 as provided to us by any data provider or originator is erroneous, inaccurate or in an incomplete form and such fact is not known to us; 3.1.2 is uploaded to any fishing plotter incorrectly or in an incomplete form; 3.1.3 is not read in conjunction with the Kingfisher Fortnightly Bulletin or any other updates, whether in paper or digital form; 3.1.4 is erroneously interpreted by you or utilised by you in a negligent or reckless manner, or for a purpose for which it was not intended or designed. 4 PROPRIETARY RIGHTS 4.1 You acknowledge and agree that we own all copyright and other rights in and to the content of the Site. 4.2 You agree that you will not remove, obscure or alter any proprietary rights notices (including copyright and trade mark notices) which may be affixed to or contained within the Site. 4.3 You agree that you will not use any data from this site for commercial gain without obtaining permission from KIS-ORCA. 5 YOUR OBLIGATIONS 5.1 You will take reasonable steps to ensure that you comply with these Terms and do not: 5.1.1 engage in any activity that interferes with, or disrupts the operation of, the Site; 5.1.2 access or attempt to access any element of the Site by any means other than through the interface that we provide, unless expressly authorised by us; 5.1.3 reproduce, duplicate, copy, sell, trade or resell the facilities provided on the Site, unless expressly authorised by us; 5.1.4 purport to transfer or otherwise dispose of your rights under these Terms. 5.2 By submitting your personal information to us you agree to our collection, use and disclosure of such information in accordance with our privacy policy set out in Condition 7. 6 OUR OBLIGATIONS 6.1 We will take reasonable steps to ensure that the Site supplied is virus-free. 6.2 We shall use our best endeavours to ensure that access and use of the Site is not interrupted by any event within our control. 7 PRIVACY POLICY 7.1 You acknowledge and agree that: 7.1.1 we collect information about you and your use of this Site, together with any details that you may need to provide for access to, or use of, the Site; 7.1.2 we monitor user traffic patterns and Site use. This may be done through the use of cookies; 7.1.3 we use and disclose information in aggregate (so that no individual users are identified) for strategic development purposes. 7.2 We will never pass personal data to anyone else, except to any successor in title to our business and suppliers that may process data on our behalf in the United Kingdom and abroad. 8 TERMINATION 8.1 This Agreement will terminate if you or we are in material breach of any of its terms and if the breach is not remedied within the period of twenty working days after written notice of it has been given to the party in breach. 8.2 On termination of this Agreement for any reason: 8.2.1 all licences granted hereunder shall immediately terminate; and 8.2.2 termination shall not affect or prejudice the accrued rights of the parties as at termination, or the continuation after termination of any provision expressly stated to survive or implicitly surviving termination. 9 MISCELLANEOUS 9.1 This Agreement is not intended to benefit anyone other than the parties to it and, in particular, no term of this Agreement shall be enforceable under the Contracts (Rights of Third Parties) Act 1999 by a third party. 9.2 If any provision (or part of a provision) of this Agreement is found by any court or administrative body of competent jurisdiction to be invalid, unenforceable or illegal, the other provisions shall remain in force. 9.3 Each of the parties acknowledges and agrees that in entering into this Agreement it does not rely on, and shall have no remedy in respect of, any statement, representation, warranty or understanding (whether negligently made or not) of any person (whether party to this Agreement or not) other than as expressly set out in this Agreement. The only remedy available to it for breach of the Agreement shall be for breach of contract under the terms of this Agreement. End  

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Privacy

KIS-ORCA.eu does not store any information that would, on its own, allow us to identify individual users of this service without their permission. Any cookies that may be used by this website are used either solely on a per session basis or to maintain user preferences. When users enter the KIS-ORCA website, their computers will automatically be issued with 'cookies'. Cookies are text files which identify users' computers to servers. The website then creates "session" cookies to store some of the preferences of users moving around the website, e.g. retaining a text-only preference. Cookies in themselves do not identify individual users, but identify only the computer used and they are deleted on departure from the website. Many websites do this to track traffic flows, whenever users visit those websites. The KIS-ORCA website uses third-party cookies to measure use of the website including number of visitors and how frequently pages are viewed. This helps to determine what is popular and can influence future content and development. For this purpose, KIS-ORCA uses Google Analytics to measure and analyse usage of the website. The information collected will include IP Address, pages visited, browser type and operating system. The data will not be used to identify any user personally. Users have the opportunity to set their computers to accept all cookies, to notify them when a cookie is issued, or not to receive cookies at any time. The last of these means that certain personalised services cannot then be provided to that user. This privacy statement only covers the KIS-ORCA website at www.kis-orca.org  This statement does not cover links within this site to other websites.

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Accessibility

The KIS-ORCA partners are committed to producing websites and web resources that can be accessed by all its visitors. We are always keen to hear about ways we can improve the services we provide. If you are having any difficulties using this website, please contact kingfisher@seafish.co.uk Many web browsers have accessibility features, which help you use the web in the way that best suits you. We recommend you select the browser which best suits your needs. You may also need to configure your operating sytem to tailor its accessibility features to your needs.

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The Importance of Renewable Energy Structures

The UK is the world leader in offshore renewables. We have more projects installed, more in construction and more in development than any other country in the world.

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The Future of Subsea Cables

Subsea telecommunication cables have a very long history. Since the installation of the world's first submarine cable across the Dover Strait in 1850, Subsea cables have been essential to the worlds communications infrastructure.

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Submarine Cable Maintenance

Under a Cable Maintenance Agreement and on notification from a Maintenance Authority, a cable repair ship operator will mobilise one of its vessels to conduct a repair on a subsea cable. The maintenance authority will provide an estimated position of the cable fault based on tests carried out from the cable Terminal Stations located either end of the marine cable. Permitting, Charting, and existing cable information is assessed prior to the vessel departing.

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Maintenance / Repair Operations

Submarine cables are very reliable, however, there are occasions when a repair to a cable becomes necessary.

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Cable Burial

At the planning and installation phase of a submarine cable project one of the most effective methods of protecting a submarine cable from damage caused by external aggression is to bury the cable, usually with a sea plough.

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Installation Procedures and Methods

Selection of provisional route

Once the requirement for a cable system has been identified and funds raised to build it, the first thing which happens is that a cable manufacturer and installer is contracted by the cable system parties.

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Design

Modern Fibre optic cables can carry many millions of telephone calls, together with huge amounts of video and internet data.  Approximately 95% of the world's telecommunication requirements are met by submarine cables. Cables are used because of their high reliability, capacity and security. Cables have an insignificant delay compared to satellite and are most cost-effective on major routes, hence communications costs are cheaper than satellites.

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About

The KIS-ORCA Project The Kingfisher Information Service - Offshore Renewable & Cable Awareness project (KIS-ORCA) is a joint initiative between the European Subsea Cables Association (ESCA) and the Kingfisher Information Service of Seafish. ESCA membership represents much of the subsea telecommunications and offshore renewable energy industry and they work with industry bodies like Renewable UK who recognise the benefit and value of the KIS-ORCA project. The aim of the KIS-ORCA project is to provide fishermen with accurate, up to date and free information relating to subsea cables and offshore renewable energy structures across Europe. KIS-ORCA information is available to fishermen in the following formats: Fishing Plotter Files Supplied on USB stick, all the KIS-ORCA data is available to fishermen in the most popular fishing plotter system formats and is updated annually. These files are also available to download from here. Awareness Charts Awareness charts are produced for key KIS-ORCA data areas. There are six charts surrounding the UK and localised charts for each constructed wind farm. These are available to download from here. www.KIS-ORCA.eu This interactive website allows fishermen to view subsea cable and renewable energy structures on an interactive map, download the latest data and ensure they are up-to-date with the very latest offshore activity news. The website has been produced primarily for Fishing Safety, although also gives fishermen an insight into the offshore industries they share the seabed with.

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News

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Safety

Offshore windfarms and subsea cables are increasing in number around the shores of the UK and the potential risks to fishermen, associated with these structures, need to be recognised and managed in a responsible way.

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Renewable Energy

This section contains information relating to Renewable Energy Structures, from design to installation, maintenance to future trends.

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Subsea Cables

This section contains information relating to Subsea Telecoms and Power Cables, from design to installation, maintenance to future trends.

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Homepage

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Map

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Downloads

ALL PLOTTERS (Fishing Plotter File) download

ALL PLOTTERS (Fishing Plotter File)

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Litton FishMaster (Fishing Plotter File) download

Litton FishMaster (Fishing Plotter File)

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Maxsea (Fishing Plotter File) download

Maxsea (Fishing Plotter File)

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Olex (Fishing Plotter File) download

Olex (Fishing Plotter File)

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Penta (Fishing Plotter File) download

Penta (Fishing Plotter File)

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SIS MicroPlot (Fishing Plotter File) download

SIS MicroPlot (Fishing Plotter File)

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Sodena (Fishing Plotter File) download

Sodena (Fishing Plotter File)

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TM Planner / Quodfish (Fishing Plotter File) download

TM Planner / Quodfish (Fishing Plotter File)

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TRAX (Fishing Plotter File) download

TRAX (Fishing Plotter File)

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Transas Navifisher (Fishing Plotter File) download

Transas Navifisher (Fishing Plotter File)

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Kingfisher Regional - North Sea North and West 2022 download

Kingfisher Regional - North Sea North and West 2022

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Kingfisher Regional - North Sea Central 2022 download

Kingfisher Regional - North Sea Central 2022

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Kingfisher Regional - North Sea South 2022 download

Kingfisher Regional - North Sea South 2022

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Kingfisher Regional - English Channel 2022 download

Kingfisher Regional - English Channel 2022

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Kingfisher Regional - South West Approaches 2022 download

Kingfisher Regional - South West Approaches 2022

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Kingfisher Regional - Baltic North 2022 download

Kingfisher Regional - Baltic North 2022

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Kingfisher Regional - Baltic South 2022 download

Kingfisher Regional - Baltic South 2022

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Beatrice 2022 download

Beatrice 2022

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Kingfisher Regional - Irish Sea 2022 download

Kingfisher Regional - Irish Sea 2022

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Hornsea 2 2022 download

Hornsea 2 2022

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Borselle 1+2 2022 download

Borselle 1+2 2022

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Moray East 2022 download

Moray East 2022

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Hywind 2022 download

Hywind 2022

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Kincardine 2022 download

Kincardine 2022

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Blyth Demonstrator Project 2022 download

Blyth Demonstrator Project 2022

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Teesside 2022 download

Teesside 2022

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Hornsea Project One 2022 download

Hornsea Project One 2022

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Westermost Rough 2 download

Westermost Rough 2

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Humber Gateway 2022 download

Humber Gateway 2022

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Triton Knoll 2022 download

Triton Knoll 2022

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Race Bank 2022 download

Race Bank 2022

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Sheringham Shoal 2022 download

Sheringham Shoal 2022

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Dudgeon 2022 download

Dudgeon 2022

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Lincs 2022 download

Lincs 2022

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Inner Dowsing & Lynn 2022 download

Inner Dowsing & Lynn 2022

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Scroby Sands 2022 download

Scroby Sands 2022

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Galloper 2022 download

Galloper 2022

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Greater Gabbard 2022 download

Greater Gabbard 2022

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Gunfleet Sands & Demonstrator Site 2022 download

Gunfleet Sands & Demonstrator Site 2022

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London Array 2022 download

London Array 2022

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Kentish Flats & Extension 2022 download

Kentish Flats & Extension 2022

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Thanet 2022 download

Thanet 2022

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Rampion 2022 download

Rampion 2022

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Rhyl Flats 2022 download

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Gwynt Y Mor 2022 download

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North Hoyle 2022 download

North Hoyle 2022

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Burbo Bank & Extension 2022 download

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Barrow 2022 download

Barrow 2022

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West of Duddon Sands 2022 download

West of Duddon Sands 2022

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Walney 1-4 2022 download

Walney 1-4 2022

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Ormonde 2022 download

Ormonde 2022

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Robin Rigg 2022 download

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Nysted 2022 download

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Horns Rev 3 2022 download

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Horns Rev 2 2022 download

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Horns Rev 1 2022 download

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Gode Wind 2 2022 download

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Gode Wind 1 2022 download

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Borkum Riffgrund 2022 download

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Anholt 2022 download

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Fishing Plotter Installation Guide download

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News

Rig Move - Deepsea Atlantic

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Marine Aggregate Industry Survey Notification - South Coast Region

A geophysical and grab survey will be conducted in the regions attached to this notice during May and July 2022.

Please be advised that from 10 May 2022 the South Coast Dredging Association will be undertaking a geophysical and seabed sampling surveys along the South Coast region within the areas shown in the charts. The surveys will employ hull-mounted multibeam echo sounder and towed sidescan sonar systems to acquire seabed data and a Hamon grab and / or a seabed video system to acquired seabed samples.

 

The geophysical works will be completed by personnel from GeoXYZ on the Geo Ocean IV. The seabed sampling works will be completed by personnel from Eco Marine Consultants on the Aquatech Surveyor. Vessel details are presented in Table 1 below. The work is expected to take approximately 6 to 8 weeks in suitable weather conditions, although adverse weather conditions may mean that the total estimated survey time is spread over a longer period.

 

This notification is intended for circulation to all interested parties undertaking activities in the vicinity of the planned survey works.  Further details regarding the surveys can be obtained by contacting either the Liaison Programme Coordinator or the Fishing Liaison Representative using the contact details at the head of this communication.

See detailed map on our bulletin website
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New proposed Active Dredge Zone on area 473/1 and 473/2

The Active Area available to be dredged is being extended to allow the dredging companies to maximise their productivity at the site. The Active Area at Licence 473/1 and 473/2 is being extended to the limits of the licence area and extent of the 2020 surveys.

Details are presented within the attached doucment and on the charts shown with this notice.

See detailed map on our bulletin website
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Wave data buoy - Clift Sound

Deployment of an AquaNode Wave Buoy, moored with a block on the seabed with a mooring swing radius of <200m about the location given. Colour: Bright Yellow Markings: High-visibility reflective tape, marked 'SURVEY' Dimensions: 75cm Ø x 39cm. Deployment Start 30 April 2022. Deployment End 31 October 2023.

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Geophysical Survey - Triton Knoll

A-2-Sea Solutions will be carrying out a geophysical and environmental survey of the Triton Knoll infrastructure including WTG's, array cables and export cables.

Geophysical survey operations involving hull mounted multibeam echosounder and towed side scan sonar (SSS) of the Triton Knoll wind farm assets will commence in mid-June from the vessel Cerys Line (27m LOA).

 

The SSS will be towed up to 150m astern. A wide berth is requested at all times as the vessel will be restricted in her manoeuvrability. 

 

Environmental survey operations will commence in early-mid July, following completion of the geophysical survey.

 

Drop down video and sediment grab samplers will be deployed from the stern of the vessel, restricting manoeuvrability.

 

Cerys Line will exhibit lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

See detailed map on our bulletin website
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Construction of Wind Farm - Triton Knoll

Activities related to the development of the Triton Knoll wind farm continue, as detailed below. For background information visit: http://www.tritonknoll.co.uk Mariners are advised that the asset installation phase of the Triton Knoll OWF is now complete. Post-installation commissioning and repair activity is continuing and it is anticipated that construction vessels required for repair work will be returning to site occasionally in early 2022 and further notices will be issued accordingly.

Mariners are advised that the following vessels continue to be active at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined within previously issued NtM's:

 

The following vessels continue to be active at the Triton Knoll as outlined within previously issued NtM's 

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Windcat 11 Crew Transfer Vessel 2BIS9 235066459 N/A Grimsby 14/12/2020
Esvagt Havelok Service Operations Vessel OYFR2 219026496 9878981 Grimsby 25/09/2021
Rover Alpha Guard Vessel MLAS2 235010380 8959817 Grimsby 21/04/2022
Seacat Courageous Crew Transfer Vessel 2IDC9 235108711 9758052 Grimsby 01/05/2022
Seacat Defender Crew Transfer Vessel 2GJY5 235098051   Grimsby 17/05/2022

 

Mariners are advised that the vessel outlined below is due to commence operations at Triton Knoll Offshore Wind Farm export cable corridor:

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

RockPiper Pipe/ Cable Burying vessel 5BML3 209449000 9583861 Norway 25/05/2022

 

All vessels can be contacted via VHF channel 16 when operational in field.

 

Activities carried out over the previous 7 Days:

  • Ongoing activities at Offshore Sub Station Platforms East & West continues.
  • Ongoing activities at Offshore foundations continues.
  • Wind Turbine Generator Service and maintenance continues infield.

Activities planned for the next 7 days:

  • Ongoing activities at Offshore Sub Station Platforms East & West continues.
  • Ongoing activities at Offshore foundations continues.
  • Wind Turbine Generator Service and maintenance continues infield.

 

*** Note ***

 

All 90 WTG's have now been fully installed, whilst WTG commissioning and service continues.

All Export Cables are fully installed/buried and need to be deemed live/energised.

All Inter Array Cables are fully installed and buried and need to be deemed live/energised.

Whilst the main installation works have been completed, major construction commissioning works are continuing.

 

*** Note ***

 

Whilst TKOWFL is reopening the site to fishing from the 14th December 2021, TKOWFL kindly request that all fishermen intending to fish within the boundaries of the Triton Knoll wind farm, contact the Triton Knoll control room prior to entering and exiting the field, and inform them of their fishing intentions.

 

This precaution is requested to safeguard all vessels operational at the TKOWF site (including fishing vessels) and your cooperation, to ensure the safety of all parties is appreciated. The following contact details should be used when notifying the Triton Knoll control room of fishing activity:

 

Control Room Manager: Derek Whyte

Radio: VHF channel 16

Callsign: TK MCC

Phone: +44 1793 896250

Email: tkcr@rwe.com

 

*** Note ***

 

Application of Triton Knoll Wind Farm Safety Zones During Construction

The Secretary of State has granted the Application of Safety Zones on the Triton Knoll Wind Farm Project as follows:

  • 500m “rolling” safety zones around any structure where construction is being undertaken (as indicated by the presence of construction vessels).
  • 50m pre-commissioning safety zones surrounding partial structures or completed structures prior to commissioning.

Mariners are advised that all foundations monopiles have been installed and all inter-array and export cables have been installed.

 

Local Notice to Mariners Recently

NtM 001-2022 (24th January 2022)

NtM 002-2022 (28th January 2022)

NtM 003-2022 (08th March 2022)

NtM 004-2022 (09th March 2022)

NtM 005-2022 (14th March 2022)

NtM 006-2022 (30th March 2022)

NtM 007-2022 (7th April 2022)

NtM 008-2022 (7th April 2022)

NtM 009-2022 (10th April 2022)

NtM 010-2022 (19th April 2022)

NtM 011-2022 (04th May 2022)

NtM 012-2022 (04th May 2022)

NtM 013-2022 (06th May 2022)

NtM 014-2022 (06th May 2022)

NtM 015-2022 (13th May 2022)

 

Navigation Warning - 08th January 2021

 

Mariners are advised that the remnants of a Wave Rider Buoy sinker weight and partial rigging are located within the Triton Knoll Offshore Wind Farm Construction site at the following location;

 

53° 30.442N 000° 50.564E

 

It is advised that the partial rigging could potentially be floating up to 9.7m above the seabed, reducing the navigable safe water in the immediate area to 10m LAT.  Mariners are advised to avoid the indicated position by 250 metres.

 

Possible Dangers to Navigation - Properties of the polypropylene show that the rope is buoyant, this makes the line sensitive for thruster currents. Taking the site water depth into consideration (19.7m LAT) and the maximum expected height above seabed of the rope 9.7m the line is expected to be floating submerged at approximately -10m LAT. In addition, it is noted that over time sediments will be trapped between the fibres and the heavier rope may finally sink. The polypropylene rope may impose a risk to foul propellers / propulsion of vessels due to the buoyant nature of the rope. As the rope is submerged at a depth of ~-10m LAT the risk is considered minimum for vessels with a shallow draught (<5m) and medium for a vessel with a deeper draught (>5m). Over time sediments will be trapped between the fibres and the heavier rope may finally sink thereby reducing the risk to propellers/propulsion of vessels. The clump weight itself (chain) is expected to have sunk into the seabed and has no significant height above seabed. In addition, the edges of the clump weight are mostly rounded (chain), the risk the clump weigh imposes to fishing activities/gear is therefore considered to be minimal.

 

Navigation Warning - 16th March 2021

 

Mariners are advised that two UXO targets have been confirmed within the Triton Knoll Offshore Wind Farm Array.

 

Mariners are advised that the two confirmed targets are located within 20 metres water depth (LAT) and a 10 metre radius exclusion zone is required around each target.  The following table provides the coordinates and a description for each target.

 

Description of Target Latitude Longitude

Water Depth

(LAT) Metres

Required Exclusion

Zone (Metres Radius)

Archaeological - The item is thought to be an air-delivered bomb.  It appears to be in a stable condition and is resting on the seabed.  Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. 53°31'50.249"N 00°47'45.908"E 20 10
Archaeological - The item is thought to be an air-delivered bomb.  It appears to be in a stable condition and is resting on the seabed.  Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. 53°31'49.895"N 00°47'45.115"E 20 10
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Geophysical Survey - Dogger Bank C Export Cable

The survey vessel, Northern Franklin, will conduct a geophysical Pre-lay survey along the Dogger Bank C export cable corridor in the Southern North Sea, between 9th March 2022 and approximately 25th May 2022. Survey operations will be continuous, 24 hours a day.

The works will contain both geophysical and seismic surveys, carried out using towed equipment. The towed streamer(s) is up to 320 m behind the vessel.  It is therefore requested that all vessels maintain a minimum 1800m separation distance from the survey vessel and pass at reduced speed.

 

A detailed survey will be carried out along several corridors within the survey area. The survey work will be hull mounted Multibeam sonar and subbottom profiler work, along with towed Side scan sonar and piggy backed magnetometer-up (tow max 320 m).

 

During operations the Northern Franklin will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

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Offshore Construction - Dogger Bank A Offshore Wind Farm

Offshore Construction of the Dogger Bank A Offshore Wind Farm commenced on the 18th of March 2022. The development of the windfarm is made up of several elements - current ongoing elements  are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.

The development of the windfarm is made up of several elements - current ongoing elements include:

 

Export Cable Installation

The cable laying vessel, NKT Victoria, is currently in Karlskrona in Sweden, loading the second part of the export cable. On completion of loadout the NKT Victoria will return to site and continue the cable installation, joining the cable and continuing to lay towards the construction site.

 

Guard Vessels

Guard vessels are deployed along the export cable route.

 

Cable Burial

The trenching support vessel, Grand Canyon III, is currently conducting post-lay burial operations, including post-trench survey, on the Dogger Bank A export cable. The exact sequence of trenching and post trench survey will be subject to on-site conditions and operational planning, but in general is typically undertaken in 10-20 km blocks of alternating trenching followed by survey.

 

Inter Array Cable Boulder removal and route clearance

The Offshore Supply Vessel, WORLD PEARL, will perform the Route Clearance operations on Dogger Bank A Inter-Array Cables routes.

 

The operations include the relocation and/or removal of subsea objects, such as debris (e.g. steel wire) and boulders, by means of a subsea Grabbing Remoted Operated Vehicle (GROV) within the array cable routes.

 

Scour Protection Installation The fall pipe vessels Flintstone and Simon Stevin will supply, transport, and install scour protection at 95 monopiles foundations on Dogger Bank A.

 

For further details of current offshore construction activities, please contact the people below or see attached Weekly Notice of Operations.

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Survey - Teal West Site Survey (Ref: 1405)

A 10 Day Teal West Site Survey using vessel Geo Ocean V call sign: LXGV between 10th June 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

GEOxyz

Geo Ocean V

LXGV

N/A

10/06/2022 - 31/08/2022

For 10 Day

21

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Survey - Windermere Site Survey (Ref: 1404)

A 1 Day Windermere Site Survey using vessel Fugro Frontier call sign: C6BH4 between 14th May 2022 - 1st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro

Fugro Frontier

C6BH4

N/A

14/05/2022 - 01/07/2022

For 1 Day

49

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Survey - Cavendish Debris Survey (Ref: 1403)

A 1 Day Debris Site Survey at Cavendish using vessel Fugro Frontier call sign: C6BH4 between 14th May 2022 - 1st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro

Fugro Frontier

C6BH4

N/A

14/05/2022 - 01/07/2022

For 1 Day

43

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Survey - Finlaggen Site Survey (Ref: 1402)

A 8 Day Site Survey at Finlaggen using vessel Geo Ocean V call sign: LXGV between 27th May 2022 - 30th November 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

GEOxyz Offshore

Geo Ocean V

LXGV

N/A

27/05/2022 - 30/11/2022

For 8 Days

21, 15

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DSV/CSV Campaign 1 : Forvie Umbilical Installation & Tie-In

Seven Kestrel (Call Sign: 2HDM7) will be carrying out umbilical installation and tie-in and IRM (Inspection, Repair & Maintenance) work between and at the location noted below. These works will be undertaken on 16th May 2022, for approximately 7 Days. Project extended to 28th May

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Rig - Maersk Integrator

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Greater NEP 3D Towed-streamer (Ref: 1332)

A 90 Day Survey Greater NEP using Vessels Ramform Hyperion, Thor Omega, Miranda and Moremma, between 01st April 2022 - 1st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

PGS

Ramform Hyperion

Thor Omega

Miranda

Moremma

3600m

15m

01/04/2022 - 1/07/2022

For 92 Days

42,43,44

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Abigail Project - Pipeline Installation

A 12km 6”/10” pipe in pipe production pipeline with a piggybacked 3” gas lift pipeline, and an umbilical will be installed as part of the Abigail project. They will be installed between a new Abigail drill center manifold and the existing Greater Stella Area Main Drill Centre (MDC) manifold. The pipeline installation is due to commence 26th May (mobilisation) and complete by 5th June (demobilisation).  The infield dates are 1st June to 4th June.

As part of the Abigail project we will be installing a 12km 6”/10” pipe in pipe production pipeline with a piggybacked 3” gas lift pipeline. The pipelines will be installed between the Abigail drill centre (a new manifold will be installed and one production well initially) and the existing Greater Stella Area Main Drill Centre Manifold.  The pipelines will be installed using a reel lay vessel and will then be trenched and buried for protection.  The current project schedule indicates that the installation workscope is due to commence offshore in May 2022.

 

The pipeline coordinates for the start and end points are summarised in the table below.  The pipeline crosses the existing Ithaca Stella Gas Export Pipeline (trenched and buried), and the crossing will be rockdumped for protection, the location is also detailed in the table below.  The installation is planned to commence in May and conclude end of August/September.  The initial planned campaigns are structure installation early May, followed by pipeline installation, pipeline trenching, umbilical installation (into the trench) and then backfilling.  The Dive Support Vessel is the last workscope and mobilises in August to perform the spoolpiece tie-ins and leaktesting.

 

The pipeline installation is due to commence 26th May (mobilisation) and complete by 5th June (demobilisation).  The infield dates are 1st June to 4th June.

 

 

Easting

Northing

Comment

Abigail Manifold

432650

6294950

Planned location

Pipeline Crossing (Stella Gas Export)

443995

6294585

Crossing of existing Stella Gas Export Pipeline (trenched and buried)

Stella Main Drill Centre Manifold

444500

6294649

Existing

 

*coordinates are Universal Transverse Mercator (UTM) Zone 31 using international spheroid (ED 50), central meridian 3º East.

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Exposed power cable in free-span (up to 2 metres off the seabed)

A recent survey has detected a 17m long cable suspension (free-span), that is up to 2 metres high, on the BritNed Interconnector HVDC cable. This poses the risk of entrapment of trawling gear; all vessels fishing are advised to keep well clear. At its maximum height, the suspension is in the order of 1.5 - 2m clear of the seabed. BritNed are actively looking at remedial options, but in the meantime all fishing vessels are advised to give this location a wide berth.

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Survey - Dogger Bight N

Commencing in August 2022 for approximately a period of two months , bathymetry survey operations will be undertaken in the Dogger Bight area using survey vessel 'Noortruck'. A-2-Sea Solutions Ltd will be operating vessel 'Noorttruck' on a 24-hour basis, sailing survey lines between 5-10 knots. Equipment will not be towed and only a hull mounted multibeam echosounder will be used. 'Noortruck' will exhibit the lights and shapes prescribed and will maintain a listening watch on VHF Channel 16.

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Survey - West of Shetlands

A 3 month Survey using vessels Subsea Viking, Veritas Viking, Artemis Odyssey, Marianne-G between 1st June 2022 - 30th September 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

PXGeo

Subsea Viking

Veritas Viking

Artemis Odyssey

Marianne-G

N/A

01/05/2022 - 01/08/2022 for 28 Days

Q204/20, 204/15, 204/18, Q204/19, Q204/24, Q204/25, Q205/16, Q205/21

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Survey - Former Guinevere Platform 48/17-Post Decom (Ref: 1408)

A 28 Former Guinevere Platform 48/17-Post Decom between 1st June - 31st October 2022

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Perenco UK Limited

TBA

N/A

01/06/2022 - 31/10/2022

For 28 Days

48

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Survey - Callanish Site Survey (Ref: 1399)

A 15 Day Site Survey at Callanish using vessel Ocean Reliance call sign: HP6391 between 1st June 2022 - 30th September 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

Ocean Reliance

HP6391

N/A

01/06/2022 - 30/09/2022

For 15 Days

15, 21

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Survey - Offshore Pipelines & wells (Ref: 1396)

A 31 Day Offshore Pipelines & Wells Survey using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis Subsea Services Ltd

Aberdeen (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 31 Days

48, 52

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Survey - Hewett Pipelines (Ref: 1398)

A 5 Day EBS & Habitat Assessment along Hewett Pipelines using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 5 Days

48, 52

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Survey - Nearshore Pipeline Inspection PL20 & PL21 (Ref: 1397)

A 5 Day Nearshore Pipeline Inspection PL20 & PL21 using vessel Boka Atlantis call sign: V7SG3 between 12th May 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI UK Limited

Bosakalis (TBC)

Boka Atlantis

V7SG3

N/A

12/05/2022 - 31/12/2022

For 5 Days

48, 52

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Survey - Leverett Field (Ref: 1385)

A 6 Day Site Survey at the Leverett Field using vessel Geo Ocean V call sign: LXGV between 27th May 2022 - 30th November 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Geoxyz Offshore

Geo Ocean V

PBYN

N/A

27/05/2022 - 30/11/2022

For 6 Days

21, 15

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Survey - Site Survey Well 15/21a-51 (Ref: 1380)

A 5 Day Site Survey Well 15/21a-51 using vessel Noordhoek Pathfinder call sign: PBYN between 18th April 2022 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
N-Sea

Noordhoek Pathfinder

PBYN

N/A

18/04/2022 - 31/07/2022

For 5 Days

15

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Deployment of Buoys - Beryl SPM-3

Apache have installed to two cardinal buoys at the following locations. It would be appreciated to advise if any other stakeholder should be inform of the installation.

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Diver Works Noss Head - Shetland HVDC HDD

Scottish Hydro Electric Transmission Plc, as part of the Shetland HVDC Link Project will be undertaking diving operations at Noss Head. The works will commence on the 8th of June and are located approximately 400m offshore in around 19m of water.

 Scottish Hydro Electric Transmission Plc, will be undertaking diving operations at Noss Head to assist with cable pull-in for the Shetland HVDC Link. The works are located approximately 400m offshore in around 19m of water.

 

The Shetland HVDC link is a critical electricity transmission link and will form part of the electrical transmission grid that is essential to the transport of renewable energy between the locations where it is generated and areas of demand, and the delivery of both Scotland’s and the United Kingdom’s 2030 climate change targets.

 

Three Horizontal Directional Drilled (HDD) ducts were installed at the site in 2021. These ducts are currently protruding from the seabed. Diving operations are planned to be undertaken at the protruding duct locations between the 8th June 2022 and 6th of  August 2022 to assist with cable pull-in. A wider area, referred to as the ‘Mooring Area’, is the area in which the diving and cable pull-in operations will take place.   

 

Vessels are required to maintain a safe distance from the ‘Mooring Area’ until the estimated completion date of 09 August 2022.

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Rig - West Phoenix

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - West Linus

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Well Operations - Orlando 3/3b-13Y

PFML are due to conduct well intervention operations at the Orlando 3/3b-13Y well using the Island Innovator rig, pre-lay of 8 anchor mooring spread commencing 20th May 2022. Guard vessel is on location prior to the MODUs arrival in early June 2022 (provisionally 12-60 days post pre-lay operations). Stevpris MK VI anchor type and maximum of 2,680m of chain/fibre rope/wire per anchor.

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Removal Activities - Hornsea Three Marine Debris

Mariners are advised that Ørsted will be commencing a scope of marine debris removal work within four Areas of Search (AoS) as part of a compensation scheme associated with the Hornsea Project Three Offshore Wind Farm (Hornsea Three), located within the UK Sector of the North Sea. Marine debris removal will commence from end May and be undertaken through June and July. The four AoS are located outside of Hornsea Three Order Limits.

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Tie in - Blake Infill Well BH786 (B8Y)

Subsea installation of production, gas-lift and controls jumpers, required to connect the new BH786 (B8Y) infill well to the existing Blake Manifold. Activities undertaken from the TechnipFMC DSV Deep Discoverer.

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Survey - Hornsea Three Offshore Wind Farm - Kittiwake

The survey is being undertaken for the purposes of geotechnical investigations at proposed locations for Kittiwake artificial nesting structures as part of a compensation scheme associated with the Hornsea Project Three Offshore Wind Farm (Hornsea Three) project, located within the UK Sector of the North Sea.

 Operations are anticipated to mobilise from Lowestoft on 24 May 2022 with investigations targeting the Lowestoft Banks, Minsmere A and Minsmere B sites. The works will last for approximately 8 days, allowing for mobilisation, de-mobilisation and weather contingency.

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Metocean buoy - Loch Ewe

A metocean buoy was deployed in Loch Ewe, hosting oceanographic instruments measuring meteorology, ocean physics and chemistry, and transmitting scientific and positional data in real time.  We would be grateful if all shipping keeps clear of the instrument

A metocean buoy was deployed in Loch Ewe, hosting oceanographic instruments measuring meteorology, ocean physics and chemistry, and transmitting scientific and positional data in real time.  We would be grateful if all shipping keeps clear of the instrument.  The buoy has a beacon illuminated FL 5 Y 20 s, a radar reflector and St Andrew's Cross, and is painted yellow.

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Metocean buoy - Clyde Sea

A scientific buoy was deployed on 20 April 2022 to record metocean variables for the study of atmospheric and ocean physics, and water chemistry - could all shipping please keep clear of the instrumentation

We have positioned a scientific buoy recording metocean variables for the study of atmospheric and ocean physics, and water chemistry in the South of Arran Nature Conservation Marine Protected Area.  Marine Scotland Science, Marine Laboratory Aberdeen, will be grateful if all shipping keeps clear of the instrumentation.

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Geophysical survey- North Sea, Norway

The vessel Northern Storm will perform geophysical survey in the Norwegian part of the North Sea. Please be advised that the vessel will have limited maneuverability. Towed- and hullmounted equipment will be used. The survey will be performed between 26th of May and the 30th of August 2022. The aim of the survey is depth mapping on behalf of Norwegian Hydrographic Service and Kartverket.

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Geophysical and environmental survey - Morgan and Mona Offshore Wind Farm Project

A geophysical, geotechnical and environmental survey of the proposed Morgan and Mona Offshore Wind Farm Project will commence on the 01.06.22 for approximately 1 week. The survey involves the use of Multibeam Echosounder (MBES) and Sidescan Sonar (SSS) some of which will be towed approximately 50m astern of the vessel.

The nearshore geophysical, geotechnical and environmental (benthic) survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project cable corridors will commence on the 1 June 2022. The survey involves the use of Multibeam Echosounder (MBES), Sub-bottom Profiler (SBP), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 50m astern of the vessel, during June. This will also include lowering equipment to the seabed to acquire environmental and geotechnical samples. Drop-down camera and grab samples will also be collected approximately every 1km during this period as well.

 

The survey area will cover areas inshore of the 15m water depth to approximately 2m. However, the survey vessel will only survey within a 1.5km width corridor within the survey area. The outline programme of works is provided below (not inclusive of weather delays).

 

All vessels are requested to maintain a safe distance (0.5 nm) from the survey vessel Titan Endeavour at all times. Vessels will display appropriate shapes and lights when surveying.

 

Outline programme of works

Geophysical survey (inclusive of towed gear)

Mona

Start Date: 02/06/22

Estimated Duration: 1-2 days

Morgan

Start Date: 03/06/22

Estimated Duration: 2-3 days

Drop-down camera

Mona

Start Date: 05/06/22

Estimated Duration: 1-2 days

Morgan

Start Date: 06/06/22

Estimated Duration: 1-2 days

Benthic survey

Mona

Start Date:07/06/22

Estimated Duration: 1-2 days

Morgan

Start Date: 08/06/22

Estimated Duration: 1-2 days

 

Contact details for the Fishing Industry Representative are provided below.

 

Tom Watson (NFFO)

 

Email: tomwatsonfleetwood@btinternet.com

 

Telephone: +44 790 317 3624

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Dogger Bank A Boundary Buoy Installation - as installed locations

The Trinity House Buoy Installation Vessel, Galatea, has installed the Dogger Bank A boundary Demarcation Buoys in the Southern North Sea.

The 17 construction boundary demarcation buoys will remain in location until the windfarm construction activities have been completed and handed over to the Operations and Maintenance teams.

 

Once the permanent Aids to Navigation (AtoN) have been installed on the WTGs, Trinity House will approve the permanent AtoN and the boundary buoys will be removed.

 

If anyone finds a buoy that is off station or encounters a buoy location where it is not functioning or is missing, they should report this to the Dogger Bank Duty Marine Coordinator as soon as possible.

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Scour Protection Installation - Dogger Bank A

The fall pipe vessels Flintstone and Simon Stevin will supply, transport, and install scour protection at 95 monopiles foundations on Dogger Bank A.

The work will be performed from 25th of May 2022 up until approximately 30th of July 2022. Work will be continuous, 24 hours a day. Coordinates of the scour protection locations are presented in Table 1 in the attached NtM.

 

During operations, the Flintstone and Simon Stevin will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessels will also transmit an Automatic Identification System (AIS) message.

 

It is requested that all vessels maintain a minimum of 500m separation distance from the Flintstone and Simon Stevin and pass at reduced speed.

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Geophysical Turbine Survey - Moray East Offshore Windfarm

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to undertake geophysical surveys around nine Wind Turbine Generator (WTG) locations. The geophysical survey is to be conducted at each proposed WTG location (as listed in Table 1 and shown in Figure 1) covering an area of 270m x 270m cantered on the respective WTG (Figure 2). These survey vessel to be used is the Waterfall. Activities are expected to commence on 18/05/2022 for approximately 10 days.

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R100 Telecom Cable Installation

Global Marine will be conducting the installation of the R100 telecommunications cables on behalf of British Telecommunications plc between May and September 2022. Timings are dependent upon weather and other operational conditions. Works will utilise the C S Sovereign and Normand Clipper vessels.

 

The vessels will be limited in manoeuvrability therefore, vessels working in the area should proceed with caution within 1NM from the cable ship during operations and all activity should remain clear 250m either side of the vessel, 500m corridor in total.

 

For a further breakdown of operations, please don't hesitate to get in touch.

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Subsea Pipeline Activities - Pickerill

Perenco Gas UK Ltd is planning to cut and remove the decommissioned Pickerill A and Pickerill B pipeline ends. All pipeline operations are to be undertaken within the Pickerill A and Pickerill B 50 m safety zones. The Maersk Achiever will mobilise from the port of Blyth in the UK on the 1st July for a 10 days campaign

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Seabed instrumentation frame deployment - Yell Sound

A seabed instrumentation frame has been temporarily deployed in Yell Sound and will be recovered in a suitable weather / tidal window from mid-May onwards. The ballasted instrumentation frame weighs around 370kg, measures approximately 1.5m high x 1.5m wide x 1.5m long  and is connected to a 100kg clump weight via a 100m wire ground line.

The frame sits on the seabed in water of at least 35m depth, with no surface infrastructure such as buoys or markers. Vessels will be able to pass safely through the area and above the frame. Use of static or mobile benthic fishing gear in the immediate area should be avoided to avoid the risk of snagging.

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Navigational Aid - Foghorn not functional - Dudgeon Windfarm

The foghorn on one of the parameter wind turbines at Dudgeon windfarm has been found to be non-functional. Defective foghorn on WTG L03 (Location ID: DAG L3) - Foghorn has been tested and found to be non-functional. Until repair can be conducted, NTM to remain in force.

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Ocean Endeavor Rig - Pan West Well

The Ocean Endeavor rig will be drilling the Pan West Well in the Penguins fields. The will be moored with 12 anchors. Some of these anchors extend outside of the rig 500m exclusion zone.

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Cable Repair - Gwynt Y Mor Export Cable

Please be advised of this notice advising mariners of the Gwynt Y Mor export cable repair. Work on site will be from 27/05/22 in the Gwynt Y Mor export cable corridor for approximately 55 days subject to weather. A barge, the NP459, will be assisted by two anchor handling vessels, the Sea Bravo and the Forth Jouster, to carry out the cable repair work. The Zwerver III and a crew transfer vessel, the Mareel Scarlet, will support the cable repair operations.

Nature of Operations

Concrete mattresses will be installed on the Rhyl Flats cable crossing by the NP459. A cable repair will follow also executed by the NP459. The NP459 will be operating on an eight anchor mooring plan. Cable lay and recovery operations will be undertaken by the NP459.

The Sea Bravo and Forth Jouster will be anchor handling in support of the NP459.

The Zwerver III will be carrying out de-burial and burial operations before installing post cable lay concrete mattresses on the Rhyl Flats cable crossing. 

The Mareel Scarlet will support the other vessels executing the works.

The work will be carried out in the cable corridor route as shown in figure 1. We kindly ask that all vessels in the local vicinity observe at least 1000m stand off from the NP459 at all times because of her anchor spread and a 500m stand off from the other vessels involved in the work scope.

During the works, the vessels will display the lights and signals relevant to the operations and will be monitoring VHF Channels 16 and 12.

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Kyle South well P&A works

Pre-lay of anchor pattern around Kyle South using vessel Loke Viking (16-21 May 2022). Guard vessel on location following anchor installation, until arrival of rig. Rig Well Safe Guardian arrival 28 May 2022. 8-anchor pattern extending approx 1500 metres from planned rig location. Mk. 6 Stevpris anchors, 500 metres of ground chain & 180 metre pennants.

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Dive Vessel Seven Kestrel

Subsea 7, on behalf of IOG, will be installing a pipeline from the Southwark pipeline to the existing Thames pipeline. The dive vessel Seven Kestrel will be supporting this work.

The dive vessel Seven Kestrel will be installing spools at the Southwark platform and the connection point with the Thames pipeline.  Work will also be undertaken on the mechanical connector at the 24-inch manifold on the Blythe pipeline connection point.  Some protection work will also be undertaken on the umbilical at the Blythe platform.

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Geotechnical Surveys at Kelham, Goddard and Nailsworth

Geotechnical survey vessel is being mobilised to acquire shallow soils information to enable the safe siting of a drilling rig.

During May/June 2022 the Geoquip Saentis, on behalf of IOG PLC, will undertake a geotechnical site survey prior to undertaking appraisal well drilling at both its Kelham and Goddard appraisal sites, and at the proposed Nailsworth development.

 

The geotechnical work will consist of a 50m borehole and a number of 35m CPTs.

 

The survey work is expected to take two to three days on each site. The vessel is scheduled to commence mobilisation circa 22nd May 2022.

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Southwark to Thames Pipeline Installation Operations

IOG PLC will be installing a 24 -inch diameter gas pipeline in the southern North Sea from the Southwark Gas Field to a tie-in point on the existing Thames pipeline.

The installation will be performed from the DP vessel Seven Borealis, expected to be on site 4th June to 11th June.  

 

Call-sign: C6YG8

IMO: 9452787

Length and breadth: 182m x 46m   

 

The vessel will be deploying a pipeline, which will restrict its ability to manoeuvre.  It is requested that all vessels operating within the area keep a safe distance (500m) and pass at reduced speed.

 

Operations will be conducted on a 24-hour basis.

 

Throughout the operations the vessel will be displaying the shapes and lights prescribed in the International Rules for the Prevention of Collisions at Sea (COLREGS) Rule 27, (Vessels not under command or restricted in their ability to manoeuvre).

 

Prior to the pipelay operation, the Anchor Handling Tug Siem Pearl will deploy the initiation anchor and pull wire.

 

The anchor and pull wire will be within the combined 500m safety zone of the Southwark Platform and the Nobel Hans Duel drilling rig.

 

Siem Pearl details:

 

Call-sign: LDZH

IMO: 9417684

Length and breadth: 91m x 22m     

 

The anchor is expected to be deployed around 20th May and recovered around 3rd July.

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Survey - ENI Platform

GVI of multiple platform structures and SS well structures.

GVI, MBES, FMD, CP. all non intrusive and all ROV work. 

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Floating LiDAR buoys & metocean buoys - Morgan & Mona

Metocean and floating LiDAR instrumentation have been successfully deployed within the Morgan and Mona project sites. A service visit is planned during the w/c 16 May.

Metocean instrumentation and floating LiDAR instrumentation have been deployed within the boundary of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project sites in the Irish Sea.

 

The metocean instrumentation within the Mona and Morgan Project site were deployed successfully in November 2021. It should be noted that instrumentation is deployed on the seabed some distance from the surface buoy, so marine users are requested to maintain the safe clearance distances as outlined in Section 3 below. Further details on the mooring design are available in Section 7. Metocean instrumentation at the Mona (South) location has been temporarily recovered from site due to damage to the mooring; this is planned for redeployment during the w/c 16 May. A service visit of the Morgan metocean instrumentation is also planned during the w/c 16 May.

 

The floating LiDAR instrumentation were successfully deployed at the Mona Project site and the Morgan project site in March 2022. It should be noted that instrumentation is deployed on the seabed some distance from the surface buoy, so marine users are requested to maintain the safe clearance distances as outlined in Section 3 below. Further details on the mooring design are available in Section 7. The AIS on the Mona floating LiDAR is not currently operating, but all other safety measures remain active and functional – repair work is planned for the w/c 16 May. A service visit of the Morgan floating LiDAR is also planned during the w/c 16 May.

 

The equipment will be maintained in position via appropriate mooring systems and will gather metocean data to inform the proposed Project. Details of the devices and relevant Aids to navigation are provided below.

 

The metocean instrumentation and floating LiDAR equipment service visit planned for the w/c 16 May will be carried out by the Forth Jouster and is expected to take approximately 4 days. During the Floating Lidar servicing it will either be towed to port or landed on the deck of the vessel for servicing prior to redeployment.

.

All vessels are requested to maintain a safe distance (500m) from the maintenance vessels (Forth Jouster, Vital or Vector) at all times. All vessels are requested to maintain a safe distance (400m) from the deployed monitoring equipment at all times.

 

Further details can be found within the attached NtM.

 

Morgan

Name: Fugro Buoy WS188

MMSI: 992351368

 Mona

 Name: Fugro Buoy WS187

 MMSI:  992351369

 Morgan

 Name: Morgan 01

 MMSI: 992351367

 Mona

 Name: Mona 01

 MMSI:  992351366

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Survey - Humber Aggregates Dredging Association

For a 1 week period between late May and late June bathymetry survey operations will be undertaken by A-2-Sea Solutions Ltd off the approaches to the Humber Estuary using survey vessel 'Noortruck' (53m LOA). Noortruck will be operating on a 24-hr basis, sailing survey lines between 5-10 knots. The Vessels will only be using hull mounted survey equipment, will exhibit the lights and shapes required and will maintain a listening watch on VHF Channel 16.

A-2-Sea Solutions Ltd will be operating the vessel 'Noortruck' on a 24-hr basis, sailing survey lines between 5-10 knots.

 

Noortruck will only be using hull mounted survey equipment.

 

Noortruck will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Survey - Liverpool Bay, Irish Sea

Commencing in late May / early June 2022, for approximately 1 week, bathymetry and object detection survey operations will be undertaken in the Irish Sea using survey vessel 'FPV Morven' (20m LOA).

A-2-Sea Solutions Ltd will be operating the vessel 'FPV Morven' on a 24-hr basis, sailing survey lines between 4-10 knots.

 

FPV Morven be towing survey equipment upwards of 100m astern in the two most southern survey areas (Area 393) . The northern most area (457) will only be using hull mounted survey equipment.

 

FPV Morven will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Geophysical and environmental survey - Morgan and Mona Offshore Wind Farm Project

A geophysical and environmental (benthic) survey of the proposed Morgan and Mona Offshore Wind Farm Project will commence on the 02.04.22 for approximately 2 months. The survey involves the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel.

A geophysical and environmental (benthic) survey of the proposed Morgan and Mona Offshore Wind Farm Project will commence on the 01.04.22 for approximately 2 months. The survey involves the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel.

 

The extent of the planned survey is shown in Figure 1. The initial phase of the survey will cover the main offshore array areas, plus a larger buffer area (phase 1 survey). The survey vessel will start in the northern polygon and progress south. The second phase of the survey will cover the potential offshore cable corridors (phase 2 survey) up to the 15m water depth, with the vessel starting within the Mona potential cable corridor.

 

Coordinates of the offshore array are also provided below.

 

An Offshore Fisheries Liaison Officer (OFLO) will be present aboard the survey vessel – see details below.

 

Any at sea, operational issues should be directed towards the OFLO in the first instance.

 

More general queries about the survey and/or proposed Project can be directed towards the Fishing Industry Representative (FIR) and the Company Fisheries Liaison Officer (CFLO) – see details below.

 

All vessels are requested to maintain a safe distance (500m) from the survey vessel Ocean Observer at all times. Vessels will display appropriate shapes and lights when surveying.

 

Vessel Name:

Ocean Observer

Vessel Type / LOA(m):

Multi-Role Survey Vessel / 80.4 m

Vessel Function:

Survey vessel

VHF Call Sign:

GHXX

MMSI:

232217000

Vessel Operator Telephone:

+44 2039 917 728

+44 7584 686 311

 

  1. Project Contact Details

Offshore Fisheries Liaison Officer:

 

Chris Emerson (NFFO)

 

Email: nffo-flo@hotmail.com

 

Telephone: +44 750 748 4314

Fishing Industry Representative:

 

Tom Watson (NFFO)

 

Email: tomwatsonfleetwood@btinternet.com

 

Telephone: +44 790 317 3624

Company Fisheries Liaison Officers:

 

Beth Owens (MarineSpace)

 

Email:

yellow1-2cflo@marinespace.co.uk

 

Telephone: +44 783 355 7808

 

Jonny Lewis (MarineSpace)

 

Email:

yellow1-2cflo@marinespace.co.uk

 

Telephone: +44 781 764 4284

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Dogger Bank A Inter-Array Cables Route Clearance

The Offshore Supply Vessel, WORLD PEARL, will perform the Route Clearance operations on Dogger Bank A Inter-Array Cables routes

The works will be performed in a single campaign, commencing on the 19th of May 2022 and continuing until approximately 3rd of July 2022. The works will be continuous, 24 hours a day. Charts of the DBA IAC routes are provided below.

 

The operations include the relocation and/or removal of subsea objects, such as debris (e.g. steel wire) and boulders, by means of a subsea Grabbing Remoted Operated Vehicle (GROV) within the array cable routes.

 

During operations, the WORLD PEARL will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

 

It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Offshore Supply Vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

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Seismic Survey – Liverpool Bay Area – Hamilton Gas Field Area

Seismic Survey operations are scheduled to cover the area of both the ‘HAMILTON and LENNOX GAS FIELDS’ but they will start at the Westerly section of the survey area, the HAMILTON GAS FIELD. Seismic Survey Vessel ‘SW BLY’ call sign: C6ZD3 supported on site by the support vessel ‘OCEAN DON’ call sign: MEIT3 and the Scout / Guard vessels ‘LADY HELEN’ call sign: MMUL3 and ‘JULIA ANNE’ call sign: MNMY.

 

UP-DATED NOTICE OF SEISMIC AND UNMANNED SURVEY OPERATIONS – HAMILTON GAS FIELD AREA

LIVERPOOL BAY EASTERN IRISH SEA

 

SEISMIC SURVEY OPERATIONS by the 92 meter Seismic Survey Vessel ‘SW Bly’ remain ongoing and operational in the area of the  HAMILTON GAS FIELD.

 

ALL MARINERS PLEASE NOTE that survey operations will at times enter into the Liverpool Ports Limits during the next few days and during these periods ‘SW Bly’ will follow the Traffic Separation scheme also a Liverpool Pilot will be onboard

 

This survey will eventually cover both the ‘HAMILTON and the LENNOX GAS FIELDS’ but as previously advertised will first complete in the Westerly section of the survey area, the HAMILTON GAS FIELD.

 

Attached is an updated Notice to Mariners issued by Shearwater concerning this first part of survey with a slightly extended Greater Working Area. PLEASE READ THE NOTICE

 

Included in the notice is a small chartlet showing the slightly extended boundary of the survey area marked with the Lat and Long coordinates. There is also a picture of the survey vessel ‘SW Bly’ as well as diagrams of the towed equipment including the Source Floats, Front and Diverter Floats as well as the Seismic Cable Array and Yellow Tail Buoys. Pictures of the Support / Scout / Guard Vessels are also attached

 

PLEASE NOTE : AT ALL TIMES WHILE ON-SITE THE SURVEY VESSEL ‘SW Bly’ WILL BE OPERATING AS A VESSEL OF ‘RESTRICTED MANOUEVERABILITY’ WHILE MAINTAINING A SPEED OF AT LEAST 3 KNTS.  

 

FOUR SUBMERGED 3D SEISMIC CABLES ARE DEPLOYED AT A LENGTH OF 1.2 NUATICAL MILES ASTERN – EACH MARKED AT THE TAIL END BY A YELLOW BUOY

 

THEREFORE A WIDE BERTH 1ml ACROSS THE BOW, 1ml DOWN BOTH SIDES AND 2ml ACROSS THE STERN IS REQUESTED WHENEVER THIS VESSEL CAN BE OBSERVED ON SITE.

 

‘SW Bly’ will be assisted on-site by the support vessel ‘OCEAN DON’ and the Scout / Guard boats ‘LADY HELEN’ and ‘JULIA ANNE’, Pictures of all three vessels attached.

 

Further notices will be issued before survey operations move into the LENNOX GAS FIELD AREA

……………………………………………………………………………………………………………

 

UNMANNED SURVEY OPERATIONS

The third attachment is the latest up-date from XOCEAN concerning their UNMANNED SURVEY OPERATIONS and this update includes two small chartlets, the first one shows the general Operational Area while the second one shows the Operational Area divided into survey blocks, or zones. There is also a picture of the Guard Vessel ‘SILVER HARVESTER’ which is accompanying these vessels PLEASE READ THE NOTICE

 

Dependant on weather and conditions survey operations for this area could run into early or mid-May.

……………………………………………………………………………………………………………

 

An Offshore Fisheries Liaison Officer will be onboard ‘SW Bly’ to assist in any communications and the location of the areas of work.

Contact details for the Fisheries Liaison Officer :

Frank Mackie 

Mobile or WhatsApp 07742 604784 

E-mail……fmackie15@gmail.com

VHF Channel 16 : request to speak to the FLO

 

A listening watch will be kept on VHF Channels 16 & 12 and both the support vessel and the Guard / Scout boats can be contacted for information relating to vessel movements only.

 

PLEASE READ THE NOTICE and do not hesitate to contact me if you are unsure about any of the above or require any further information, also please pass this information to any of your colleagues who you think might be interested.

 

These notices are primarily aimed at fishermen who operate in the area of the survey but this information will also be of interest to all other mariners and users of the sea who operate in the Eastern Irish Sea.

 

If you know of any fisherman or any other user of the sea who works the area and does not receive this information or anybody else who would benefit from this information please let me know.

 

Please do not hesitate to contact me if you are unsure of anything or require any further information

 

Regards  :  Tom Watson

Tel……..…..Home 01253 875565

                   Mobile 07903 173 624

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Rig - Seajacks Leviathan

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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COSL Pioneer MODU - Captain Field

COSLPioneer MODU will be drilling in the Captain field for Ithaca Energy for approximately 128 days, with the anchors being pre-laid approximately two to four weeks prior to the rig arriving onsite. Activity will take place from 16th May until 14th November 2022.

Ithaca Energy (UK) Ltd is planning to use the COSLPioneer to drill UB05P well and suspend A2Y at Captain Drill Centre C.  The activity will last approximately 150 days (including anchor pre-lay).  The Captain platform ERRV will act as a guard vessel at the location from when the anchors are pre-laid until the COSLPioneer arrives.

The field lies within the United Kingdom Continental Shelf (UKCS) Block 13/22a, approximately 91 km North of Aberdeen and 191 km from the UK/Norway median line.

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Anchor Pre-Lay at Ettrick Location

Normand Prosper AHV to pre-lay 8x anchors at Ettrick Location. 8x anchors will be laid in the Ettrick field, prior to rig mobilisation forecast for 14th May. 8x anchors will remain laid for Ettrick campaign.

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COSL Innovator - Ettrick P&A Campaign E5

COSL Innovator to anchor at Ettrick and commence field P&A campaign. The COSL Innovator will mobilise to Ettrick from Agotnes, Norway and hook up to the pre-laid anchors at the Ettrick location. It will commence work at the Ettrick E5 well location.

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Redeployment (Floating LiDAR Redeployment) - Valorous

The redeployment of the Floating LiDAR system within the proposed Valorous Floating Offshore Wind Farm project site, following recovery in January 2022, has been successfully undertaken.

Redeployment and Operation Floating LiDAR System

 

To inform the engineering designs and Environmental Impact Assessments (EIA) for the proposed Valorous Floating Offshore Wind Farm (FLOW), a Floating LiDAR and associated mooring system has been successfully redeployed within the boundary of the proposed Valorous Floating Offshore Wind Farm (FLOW) project site.

 

The Floating LiDAR is maintained in position via appropriate mooring systems. The Floating LiDAR will remain at the location listed below for a 11-month period. Details of the device and relevant Aids to Navigation are provided within the attached NtM.

 

All vessels are requested to always maintain a safe distance (100m) from the Floating LiDAR.

 

The Floating LiDAR equipment will undergo regular scheduled maintenance during the operation period, further notice to mariners will be issued confirming the dates and maintenance activities

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B-Block Decommissioning - CSV Activities - Balmoral Phase 2 Decommissioning

CSV Seven Oceanic is due to mobilise in Peterhead on 12th May 22 to undertake a 35 day offshore campaign to execute the Balmoral Phase 2 Decommissioning Scope. The vessel will be working at Balmoral, Brenda and Nicol 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Peterhead.

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Drilling - Diadem Exploration Well

Capricorn Energy UK Ltd are drilling the Diadem exploration well using the Valaris 123 jack-up rig.

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Polymer Injection Flowline Installation - Captain EOR

A polymer injection flexible flowline will be installed between the Captain BLPA and the Captain Area B UTM structure (well b28). As part of the Captain EOR Stage 2 project a new 6" polymer injection flowline will be installed.  It will be installed between the Captain BLPA and the Captain Area B UTM structure (well b28). The flowline will be installed from a construction vessel and will be jet trenched for protection using ROV.

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Loss of Clump Weight - MarramWind

On the 6 May 2022 at 17:12 UTC, during sea acceptance trials for the MarramWind Site Investigation Surveys, a Sound Velocity Probe (SVP), Ultra Short Baseline (USBL) acoustic positioning system beacon and clump weight were lost. The lost equipment measures 100cm x 30 cm x 30cm. The depth of water where incident occurred is 125m. The Project is working to recover the object. Marine operators are advised to be aware of this object during any operations they undertake.

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Rig - Ocean Patriot

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Deepsea Aberdeen

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Invincible

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Prospector 5

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris Norway

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris 92

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Nephrops Underwater TV Farn Deep Grounds

To carry out underwater TV survey of Nephrops off the Northumberland coast on the Farn Deeps grounds. Cefas Endeavour will transit to the Farn Deeps and tow a camera sledge over 110 stations, each of 200m transects, to estimate Nephrops densities. If time permits, Cefas Endeavour carry out water sampling and light penetration sampling.

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Survey - Kingmere MCZ

ABPmer will be conducting a geophysical and drop-down video survey in and around the Kingmere MCZ.

Geophysical Survey

 

It is expected that geophysical survey operations in the area will commence on Sunday 24th May for a period of 6 days. The survey will be conducted using the ‘Wessex Explorer’ using a vessel mounted multibeam echosounder.  Multibeam data will be acquired in nine small survey areas within the wider area detailed in this notice. ABPmer have completed these works successfully in previous years and understand the importance of working with the fishing industry and as such will always work around fishing gear and fishing activity.

 

Geophysical Survey Vessel

Wessex Explorer

MMSI: 235008166

Vessel Mobile: 07913 810292

 

Drop-Down Video Survey

Three one-day drop-down environmental video surveys will be conducted within the same survey areas (with the exception of area C). These will be conducted on w/c 23rd May OR w/c 5th June, w/c 4th July and w/c 18th July. The video will be towed up to 100m astern of the Littlehampton Harbour Board vessel, ‘Erica’.

 

DDV Survey Vessel

Erica

MMSI: 235080084

Littlehampton HM: 01903 721215

 

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Survey - Firth of Clyde - Dunoon and Ardbeg gas pipelines

Marine survey operations are due to take place on the existing undersea gas pipelines near to Dunoon and Ardbeg in the Firth of Clyde. The survey operations are due to start in May 2022 and are expected to last approximately 20 days.

Survey work

Survey operations along the pipelines will be carried out by the vessel Mersey Discovery.  Survey operations will involve the use of both hull mounted equipment and towed sub-surface equipment which may extend up to 200m behind the vessel.  The survey is due to start on the 14th May 2022 and to last for up to 20 days, subject to weather and sea conditions.

 

The purpose of the survey is to examine the extent of burial and exposure of these pipelines along their route, identify any freespans, and to monitor the condition of the pipeline.

 

Vessel details

The Mersey Discovery is an 11.5m Redbay RIB with a grey superstructure.   The vessel details, including details on its current location can be accessed at the Marine Traffic website using the link below:-

  • Mersey Discovery: survey vessel | Call sign MJIA2

During survey work the vessel will be restricted in the ability to manoeuvre.  It will display the appropriate day shapes and lights.  The vessel will actively transmit an AIS signal.  Survey speed will be around 3-4 knots.

Mariners are requested to give the survey vessel a wide berth and pass at a slow speed during these operations.

 

Location

A map showing the location of the survey work is provided in the Notice to Mariners that can be downloaded here.  The approximate landfalls of each pipeline are provided below for reference.

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Pipeline Installation - Evelyn Field

Tailwind Mistral Ltd intends to install pipelines and umbilicals from the existing Evelyn Well EV01 to the GEEBB Manifold and the Triton riser base, this will comprise: 8" production line with 3" piggyback gas lift line, Control umbilical line.

The Evelyn field is located within UK licence P1792 approximately 7.5km to the South West of the Dana Operated Triton FPSO. The development will consist of a single gas lifted production well EV01.

 

The 8" Pipeline route runs from the Evelyn valve skid (EVVS) drill centre tie-in structure in a north east direction to a comingling tie-in structure (GEEBB) which will comingle production fluids from Gannet E, Evelyn and Bittern. The GEEBB structure will be located outside the Triton swing circle, but inside its 500m safety zone. The 8-inch pipeline will be trenched and buried using trench backfill material. Areas which are not trenched at the Evelyn and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

The 3" Pipeline route runs in a south westerly direction between the GEEBB tie-in and distribution structure to the Evelyn valve skid (EVVS) drill centre tie-in structure. The GEEBB structure will be located outside the Triton swing circle but inside its 500m safety zone.  The 3-inch gas lift pipeline will be piggybacked to the larger 8-inch production pipeline and will be trenched and buried using trench backfill material. Areas which are not trenched at the Evelyn and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

The 9.5 km control umbilical will be installed from the EVVS to the umbilical riser base at Triton FPSO.  The umbilical will contain a total of 16 cores and will provide hydraulic, electrical and chemical supplies from the Triton dynamic umbilical at riser base SY9516A to the EVVS and wells

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Acoustic survey at HyWind Scotland wind farm

Deployment of three stationary scientific moorings at HyWind Scotland Offshore Wind Farm in May 2022, with recovery planned for mid-late June 2022.

Staff from the Scottish Association for Marine Science (SAMS) will deploy and recover three scientific moorings inside the Hywind Scotland wind farm lease site, ~25 km offshore from Peterhead. Expected deployment duration will be several weeks, from as early as May 9, 2022, up until the end of June 2022.

 

Moorings will contain passive acoustic recording equipment intended to record sound produced by operational wind turbines. Moorings will be located within the Hywind Scotland lease area boundary, at 300 m, 600 m and 2,000 m from one of the wind turbines, at water depths of around 110 m. Moorings will extend up to 110m along the seafloor using weighted lines, and will not extend more than a few meters into the water column (there will be no surface expression). Deployment and recovery will take place using acoustic release-based methods, using Moray First Marine Ltd. vessels travelling from Peterhead. Deployment and recovery activities of all three moorings are expected to be completed within a single working day (again, weather permitting).

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Completion of Platform Decommissioning Activity - Ketch Field (44/28) and Snagging Hazard

Ketch platform decommissioning completed and the Sleipnir Heavy Lift Vessel has left the area (05:35 BST on 22nd April 2022). Snagging hazard remains and an EERV / Guard vessel will be on-station until July 2022 when the riser stub will be removed as part of the DNO North Sea Limited Pipeline decommissioning operation. Please also note that an 18” riser stub remains protruding approximately 1.5m above seabed level close to the platform location.

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Hydrographic Survey from Fifeness to Montrose

The vessels Northern Wind and Northern Storm are performing multibeam survey in the area Fifeness to Montrose on behalf of UKHO/MCA. The aim of the survey is to update nautical charts. The vessels use only hull-mounted equipment, no towed equipment is used. Please be advised that the vessels have limited manoeuvrability. The survey is performed as 24/7 operations if the weather permits and is estimated to be completed by end-June.

The vessels Northern Wind and Northern Storm are performing multibeam survey in the area Fifeness to Montrose on behalf of UKHO/MCA. The aim of the survey is to update nautical charts.

 

The vessels use only hull-mounted equipment, no towed equipment is used. Please be advised that the vessels have limited manoeuvrability. The survey is performed as 24/7 operations if the weather permits and is estimated to be completed by end-June.

 

The survey area is divided into smaller blocks which can be seen in one of the attached figures. Which block Northern Wind will work in at a certain time depends on weather, number of anchored vessels, if day light operation is needed etc.

Northern Storm will work in block G, K and L.

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Moorings and scientific equipment installed - Moray Firth

Mariners are advised that the University of Aberdeen has completed the installation / service & reinstallation of the moorings and equipment listed in the current notice. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022

The moorings support sound recording equipment, and / or acoustic loggers that record echolocation clicks of dolphins and porpoises. Where moorings are subsurface, they extend no more than 3 m vertically from the seabed. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022. 

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Uncharted Wreck - Fifeness to Montrose

Wreck observed outside of Lunan bay, south of Montrose. Wreck standing upright, slightly leaning to one side, measuring 41.5m in length, 7.2m in width and 6.5m in height at a depth of 19.3m. Matches description of wreck of armed trawler (ID 3044) positioned approximately 850m away, both in measured dimensions as well as bomb markings described in the middle parts of the wreck. In this case, the wreck is positioned far from its listed position in admiralty charts over the area.

Whether this is wreck 3044 or an uncharted wreck can however not be confirmed.

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Mooring and scientific equipment installed - Moray West offshore windfarm site

Mariners are advised that the University of Aberdeen has completed the installation of the moorings and equipment listed in the current notice. Moorings support sound recording equipment, and / or acoustic loggers that record echolocation clicks of dolphins and porpoises. Subsurface moorings extend no more than 3 m vertically from the seabed. The recording equipment and moorings will remain at these locations for 6 months and should be retrieved in October 2022.

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Scottish Hydro Electric Power Distribution (SHEPD) Marine & Freshwater Subsea Inspections – 2022

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea and freshwater inspections of several cables within a defined corridor.

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea and freshwater inspections of several cables within a defined corridor.

 

Given the different conditions and water depths anticipated at each site, a range of vessels will be utilized across the project. The inspection works will be centered on a 50m cable corridor.

 

Survey operations at these locations are expected to commence in May 2022, with start dates and anticipated durations given in the attached NtM.

 

VESSEL DETAILS All vessels to be used during the survey and inspection campaign are owned and operated by Aspect Land & Hydrographic Surveys Ltd. Operations will be limited to daylight hours only.

The vessels conducting these inspections will be restricted in their its ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (COLREGs Rule 16 & 18) during marine operations.

All vessels will monitor VHF Channel 16 throughout survey operations. Mobile contacts for the vessels are listed at the end of the attached NtM.

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Survey - Ballacash Channel NE (Isle of Man)

Commencing from mid May for a period of one month, bathymetry survey operations will be undertaken in the Ballacash Channel using survey vessels 'FPV Morven'.

A-2-Sea Solutions Ltd will be operating 'FPV Morven' on a 24-hour basis, sailing survey lines between 5-10 knots.

 

Equipment will not be towed and only a hull mounted multibeam echosounder will be used.

 

FPV Morven will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Seabed instrumentation frame deployments - South Stack Irish Sea

Two seabed instrumentation frames with associated ground lines and clump weights have been temporarily deployed for at least 6 weeks and will be recovered in a suitable weather / tidal window. Each ballasted frame weighs around 370kg, measures approximately 1.5m x 1.5m x 1.5m and is connected to a 100kg clump weight and remotely actuated pop-up buoy via a 100m wire ground line.

Once installed in the Morlais demonstration zone the frames will sit on the seabed at depths of at least 30m, with no surface infrastructure such as buoys or markers. Vessels will be able to pass safely through the area and above the frames. Use of static or mobile benthic fishing gear in the immediate area should be avoided to avoid the risk of snagging.

 

The positions listed here are as deployed.

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22/19a Birgitta appraisal well sub sea dome (suspended well)

Appraisal well drilled at location in Q1 2022. The well is suspended for future development & outfitted with a subsea dome. Once drilling of the Birgitta appraisal well is complete, it will be left suspended. A single wellhead and WHPS will be left on the seabed and the Maersk Resilient MODU will depart. A 500m safety exclusion zone will be designated around the suspended Birgitta appraisal well. The suspended well phase will last for approx. 1 or 2 years before further development.

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Rig - Well-Safe Guardian

Notice to alert sea users to P&A activity within the Buchan and Hannay fields using the Well-Safe Guardian MODU in Block 20/05. 20-05a-10Y (J2) well 20/05c-8X (H01) well 20/05c-9 (H02) well

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Pre-Lay Anchor pattern Well-Safe Guardian at Hannay H01 Well

Please be advised that Well-Safe Solutions, on behalf of Repsol Sinopec Resources UK propose to place moorings on the sea-bed at the Hannay Field from 25/01/22 in advance of the mooring of the Semi-submersible Rig Well-Safe Guardian.

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Dogger Bank A Export Cable Burial Operations

The trenching support vessel, Grand Canyon III, will perform post-lay burial operations, including post-trench survey, on the Dogger Bank A export cable in the Southern North Sea. The work will be performed in a single Campaign, starting on the 3rd May 2022 and continuing until approximately 29th July 2022. The work will be continuous, 24 hours a day.

During trenching operations and until the cable has been protected by means of burial or rock placement, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention.

 

The trenching operations are planned to commence from the nearshore end of the cable route, beginning at the pre-cut trench at HDD exit, working towards the Offshore Platform. The exact sequence of trenching and post trench survey will be subject to on-site conditions and operational planning, but in general is typically undertaken in 10-20 km blocks of alternating trenching followed by survey. At existing third-party crossing locations (Langeled pipeline and SEAL pipeline), trenching exclusion zones of +/-20m shall be applied (no part of the trencher is to enter the exclusion zone).

 

During operations the Grand Canyon III will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Grand Canyon III and pass at reduced speed.

 

Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor. In the period between cable lay and cable burial, or protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.

 

To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM). The guard vessels will contact vessels approaching within 1.5Nm.

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Rig - Maersk Resolve

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Swift 10

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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IRIS Fiber-Optic Submarine Telecommunications Cable Installation

Please be advised that the cable laying ship CS DURABLE will be conducting telecommunication cable installation operations for the IRIS undersea cable system between Galway Bay, via Rockall, to Iceland, work is scheduled to be carried out between approximately 30th May and completing approximately 15th August 2022.

We kindly request that ships and fishing vessels keep a distance of at least 1 nm from the cable installation vessel to ensure safe operations.  We also kindly request that any towed, set or drift gear, such as longlines, trawls gillnets, and seine nets be moved off the route by a distance of 1/2 nm on either side at the locations and during these periods noted above above in order to avoid gear entanglement. 

 

Vessel Name:                       CS DURABLE

Call Sign                                V7DI8.

VHF Working Ch.                  Monitoring 16 & 13

Activity:                                 Underwater Cable Operations

Location:                               West coast of Ireland, Rockall and UK EEZ in Atlantic waters (north to Iceland)

Activity Period:                     May 30 to August 15, 2022 [Subject to change]

24 hr. contact:                       Mobile +1 732 294 3058 when in cell range

Bridge VSAT:                       +1 346 201 5210

Office VSAT:                        +1 346 201 5209

EMAIL                                  csdrmaster@subcom.com

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Huntington Decommissioning – CSV Activities – Mooring Suction Anchor Recovery

CSV Boa Sub C is due to mobilise in Sunderland on 4th May ’22 to undertake approx. a 21 day campaign to execute the recovery of five (5) remaining suction anchors which were once used to moor the Voyageur Spirit FPSO – now off station. The vessel will be working in the former FPSO anchor pattern.

CSV Boa Sub C is due to mobilise in Sunderland on 4th May ’22 to undertake approx. a 21 day offshore campaign to execute the recovery of five (5) remaining suction anchors which were once used to moor the Voyageur Spirit FPSO – now off station. The vessel will be working in the former FPSO anchor pattern. On successful recovery of three suction anchors, the vessel will depart field to carry out an interim port call to offload in Blyth, before it will return to field to collect the remaining two suction anchors, returning to Blyth / Sunderland to demobilise.

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Rig - Noble Sam Turner

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Well Intervention - Bittern A2

Dana intends to carry out a well intervention on the Bittern A2(PA) well. The well intervention will be executed from the Well Enhancer Light Well Intervention Vessel (LWIV) during May 2022. All chemical discharges will be within the 500 m exclusion zones of the Bittern DCA manifold.

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PrePARED Fish Tracking Array - Beatrice and Moray East Offshore Windfarms

Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works. PrePARED is a collaborative research project coordinated by MSS which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms. Deployed: 10 April 2022. Removed: 30 August 2026.

Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works. PrePARED is a collaborative research project coordinated by Marine Scotland Science which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms. The moorings hold research equipment that support hydrophone receivers. These receivers log the presence of fish, such as Cod, Haddock and Whiting which will be tagged with acoustic ID transmitter tag s (they will also record salmon and seatrout smolts migrating from Moray Firth Rivers tagged by the Atlantic Salmon Trust (AST) should they pass within range).

 

The moorings will be deployed from the 10th of April 2022 by a the Waterfall operated by Moray First Marine. The moorings will be removed by the 30th of August 2026.

 

Acoustic fish tracking moorings will not be surface marked and will be located on the seabed. The array moorings will extend vertically no more than 4 metres. The moorings will be serviced by boat, using the inbuilt acoustic recovery system. In the unlikely event of failure in the acoustic release system an ROV will be used from the same boat to service the mooring. Please note the acoustic fish tracking moorings are being deployed as close to the wind turbine generators as possible to minimise interference with fishing operations (50m), should these be accidently caught only the instruments are required to be returned and the location of the discarded weight should be supplied to MSS for recovery later.

 

Fish capture traps and timed-release cages (8 traps and cages in total) will be deployed in Moray East and Beatrice sites. These traps and cages will be used in the capture and managed release of fish needed for internal electronic tagging with acoustic ID transmitter tags. Traps and cages will be present at Moray East and Beatrice for up to 10 days commencing 13th of April. Traps and cages will move at 1 to 2-day intervals. All traps and cages will be marked with creel style floats and clearly marked “Marine Scotland Science” and be marked with an AIS beacon (visible as MARLAB 1 – MARLAB 8). Traps and cages will be at least 100 metres from turbine locations. Locations of traps and cages will be notified to the relevant windfarm Marine Control Centre as appropriate.

 

Contact details

 

All enquiries should be made to the Marine Scotland acoustics mailbox acoustics@scotland.gsi.gov.uk) marked for the attention of Robert Main. Switch Board Tel: 0131 244 2500

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Subsea Cable Installation - Mainland Orkney to Hoy North and Centre

Mainland Orkney to Hoy North and Centre Cable Replacements: The projects are experiencing significant delays relating to offshore cable installation and no offshore operations will be taking place until further notice. The previous Notice to Mariners dated 1st April 2022 is now cancelled. Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mainland Orkney-Hoy North and Centre submarine electricity cables.

Mainland Orkney to Hoy North and Centre Cable Replacements: The projects are experiencing significant delays relating to offshore cable installation and no offshore operations will be taking place until further notice. The previous Notice to Mariners dated 1st April 2022 is now cancelled.

 

 

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mainland Orkney-Hoy North and Centre submarine electricity cables. The purpose of this notice is to outline the working area and operations for the vessels along the cable lay route. There will be three different vessels associated with the subsea cable installation process. In summary: 1. Cable Lay Vessel: Global Symphony (entire route) 2. Post-Lay Inspection of Cable: Global Symphony (entire route) 3. Post-Lay Stabilisation Works: C-Force (alternative vessels may be either C-Fenna or C-Odyssey) 4. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed in the attached NtM. The vessels will be working 24 hours per day during these operations.

 

Cable Lay & PLIB Vessel Details The vessel that will be carrying out the crossing construction works, the cable installation works and also the cable post lay inspection operations is the Global Symphony.

 

Post Lay Stabilization Works Vessel Details The vessel that will be carrying out the post lay stabilization works on both North and Centre cable is the C-Force (or one of the listed alternative vessels).

 

Description of Installation Operations CLV Global Symphony will be installing concrete mattresses on crossing points and then lay the Mainland Orkney to Hoy North & Centre cables. The offshore post lay survey operations will be carried out by the Global Symphony immediately after completion of each cable lay operations. The construction vessel will be installing concrete mattresses and rock filter bags on both North and Centre cables at pre-determined locations as part of the post lay stabilization works. The nearshore sections of the marine cables will be surveyed using the Delta 9151 (or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed.

 

Fishing Liaison Officers (FLOs) Fishing liaison for the cable lay operations will be co-ordinated by Brown and May Marine (BMM). For any commercial fishery queries please contact the Company Fishing Liaison Officers (CFLOs) Alex Winrow-Giffin on 07760 160039, alex@brownmay.com or Meg Kalafat on 07702 710176, meg.kalafat@brownmay.com

The local Fishing Industries Representative (FIR) Chris Davidson (07810 305100), cad17@hotmail.co.uk will also be in place to liaise with the vessels and fishing operations in the area.

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Power Cable Installation - Carradale to Arran

Carradale to Arran Subsea Cable Installation: The Project is experiencing significant delays relating to offshore cable installation and apart from works in Area A, no offshore operations are anticipated to be undertaken until further notice. The planned operation dates for Area A are now from the 15th May 2022 to the 15th July 2022. This Notice to Mariners supersedes the original Notice to Mariners dated 1st April 2022.

Carradale to Arran Subsea Cable Installation: The Project is experiencing significant delays relating to offshore cable installation and apart from works in Area A, no offshore operations are anticipated to be undertaken until further notice. The planned operation dates for Area A are now from the 15th May 2022 to the 15th July 2022.

This Notice to Mariners supersedes the original Notice to Mariners dated 1st April 2022.

 

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Carradale-Arran submarine electricity cable. As part of the cable replacement project, along with the cable lay and burial operations, 2 off Horizontal Directional Drilling (HDD) operations will be carried out, with the aim to install 2 of 400mm SDR11 HDPE ducts that will allow the Carradale-Arran cable to reach the onshore connection point. The purpose of this notice is to outline the area for the duct installation works (Area A) as well as the working area for the cable lay and burial vessels along the cable lay route (Area B).

 

There will be multiple vessels associated with Carradale-Arran cable installation process. In summary: - AREA A: 1. Marine assistance to duct installation limited to the HDD punch out locations: C-Force (alternative vessels may be either C-Fenna or C-Odyssey). This will include diving ops being carried out at the HDD exit points.

- AREA B 2. Boulder Relocation – Global Symphony (entire route) 3. Cable Lay Vessel – Global Symphony (entire route) 4. Post-Lay Inspection Burial (PLIB): Global Symphony (entire route) 5. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the above-mentioned subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed in the attached NtM.

 

Ducts Installation Works Vessel Details The vessel diving works will be carried out on the ducts#1 and #2 from is the C-Force (or one of the listed alternative vessels).

 

Description of Duct Works After the HDPE duct is pushed into the bore, divers will install over the duct temporary ballast to keep the duct in position in preparation for the cable installation works. Once the duct is stabilized, divers will remove the bullnose and install a bell mouth on each duct. The duration of the operations is shown on table 1. All vessels will be limited in maneuverability. Other vessels should maintain an appropriate and safe distance of 500m when passing the vessels undertaking cable operations and should pass at the lowest speed to avoid vessel wash effects. The vessel will be working 24 hours per day during these operations.

 

Cable Lay & PLIB Vessel Details The vessel that will be carrying out the boulder relocation works, the cable installation works and also the cable post lay inspection and burial operations is the Global Symphony.

 

Description of Installation/PLIB Operations CLV Global Symphony will be relocating boulders in preparation for cable lay operations and will then lay the Carradale to Arran cable. The PLIB operations will be carried out by the Global Symphony immediately after completion of cable lay operations. The nearshore sections of the marine cables will be surveyed using the Delta 9151(or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed.

 

Fishing Liaison Officers (FLOs) Fishing liaison for the cable lay operations will be co-ordinated by Brown and May Marine (BMM). For any commercial fishery queries please contact the Company Fishing Liaison Officers (CFLOs) Alex Winrow-Giffin on 07760 160039, alex@brownmay.com or Meg Kalafat on 07702 710176, meg.kalafat@brownmay.com

The local Fishing Industries Representative (FIR) George White on georgewhite0@gmail.com (07761 873965). will also be in place to liaise with the vessels and fishing operations in the area.

 

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Subsea Structure - Gannet E Tie-In Valve Skid (GETVS)

Tailwind Mistral Ltd intends to install the Gannet E Tie-In Valve Skid at the Gannet E Field

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Pipeline Installation - Gannet E Expansion

Tailwind Mistal Ltd intends to install pipelines between the Existing Gannet E Manifold (GEM) to the new Gannet E Tie-in Valve Skid (GETVS) and a 9" production line between the GETVS to the GEEBB Manifold.

Pipeline route runs from the Gannet E Tie in Valve Skid (GETVS) structure at the drill centre in an easterly direction to a comingling tie-in the GEEBB manifold. 

The GEEBB manifold will be located outside the Triton swing circle, but inside the 500m safety zone.

 

The 9-inch flexible flowline will be trenched and buried using trench backfill material. Areas which are not trenched at the Gannet E and Triton approaches will be protected from fishing gear interaction and/or dropped objects by a combination of rock placement and concrete protection mattresses.

 

Methanol will be delivered from the Gannet E Manifold (GEM) to the Gannet E Tie-in Valve Skid (GETVS) via a dedicated 3/4" thermoplastic hose within the GEM to GETVS chemical/hydraulic jumper bundle.  The jumper bundle containing the methanol hose and will be protected from fishing gear interaction and/or dropped objects by a concrete protection mattresses and additional grout bags where concrete mattress placement is not practical. 

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Umbilical Trenching Operations - Forvie

Due to a delay the trenching work between the locations noted below will now be undertaken on 1st June 2022 with a planned duration of 10 Days.

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Subsea Structures - Evelyn Valve Skid

Tailwind Mistral Ltd intent to Install the Evelyn Valve Skid Located near the Evelyn EV01 Well

The Evelyn Valve Skid (EVVS) is part of the Evelyn field development, consisting of a gas lift flowline piggy-backed onto a new production pipeline and a new umbilical for carrying control, power, hydraulic lines and chemicals from Triton FPSO to Evelyn. 

 

Evelyn will be connected to Triton via the existing Triton P1 Bittern production riser. 

 

The Evelyn valve skid (EVVS), will be installed at Evelyn, near the location of the EV-01 well, it will be connected to the EVVS from the EV01 xmas tree by the rigid production and gas lift spools pipeline and electrical and umbilical jumper bundles.  A 9.5 km control umbilical will be installed to the EV01 well via the EVVS to the umbilical riser base at Triton FPSO.  The umbilical will provide hydraulic, electrical and chemical supplies from the Triton dynamic umbilical at riser base SY9516A to the EVVS and wells.

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Survey - North Sea (Ref: 1357)

CGG will acquire ~1800 km² of multi-client 3D seismic data in UK Quad 3 between May and September 2022. Two survey vessels will tow up to 14 8km long hydrophone streamers and a seismic source. The source will emit acoustic energy into the sub-surface that is reflected back to the streamers. The survey is part of a larger ~9000 km² program in Norwegian waters to be acquired concurrently. The UK survey duration is estimated to be 45 days, with 31 days of active source effort.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Shearwater GeoServices AS

Amazon Warrior

3FNE9

Linde-G

V7A2093

Mainport Pine

V7ZH8

Amazon Conqueror

3EBI3

Astra G

HP8210

Mainport Cedar

V7ZH7

8400m

8m

01/05/2022 - 30/09/2022

For 45 Days (in UK)

210,211

2,4

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Partially Exposed Conductor Stump - Ketch

Following Operational challenges during the Ketch conductor severance and removal campaign, the 26 inch conductor for KA08 has been severed at a shallower depth of -8ft, leaving a partially exposed stump. ROV footage has observed a crater around the conductor with approximately 2 ft of conductor sitting above the base of the crater. The crater is estimated to be 4 m in diameter with a maximum depth of10 ft.

The crater is known to be naturally backfilling with seabed sediment and is expected to continue to do so, particularly during winter months. The incremental risk posed by the 2 ft conductor stump is considered to be negligible.

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Rig - Prospector 1

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rigmove - Ensco 92 to Tethys TN field

Chrysaor (a Harbour Energy company) plan to move the Ensco 92 Jack-up drilling rig from the Saturn ND field location to the Tethys TN field location to perform abandonment operations on the Tethys TN 49/11b-T1 development well. Throughout well abandonment operations there will be a dedicated ERRV on location monitoring the surrounding sea area.

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ADCP deployments on the seabed - Skye and Summer Isles

Deployment of three scientific Acoustic Doppler Current Profilers on the sea bed for 12 months – no surface markers.

We will be deploying three scientific Acoustic Doppler Current Profilers on the sea bed for 12 months from May 2022 to collect currents data for environmental monitoring and hydrodynamic model validation.  The instruments have no surface markers and will be recovered using acoustic releases.  Two of the instruments will be inside low profile trawl-resistant frame (Little Minch, west of Skye, and Linn Crowlin, east of Skye) and one inside a steel frame (Summer Isles).  See attachment for photos of the frames, a chart with their position and their positional details.

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Well Intervention Works

Well Intervention Activities (Bruce Field)

The Helix Seawell Light Well Intervention Vessel will be conducting works at the Bruce Field (Western Area Development). 

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Subsea Foundation Inspection - Moray Offshore Windfarm (East)

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence subsea Remotely Operated Vehicle (ROV) foundation inspections at all locations within the bounds of Moray East Offshore Windfarm on the 1st April 2022 for 100 days. This includes scour visual inspections at all jackets, and Cable Protection Systems entering substructures at selected locations. The area of Operation is shown in Figure 1 below and will be carried out using the GXS Viking.

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Survey - NW Approaches to Liverpool Bay C

Commencing in April 2022, for approximately 3 months, bathymetry survey operations will be undertaken by A-2-Sea Solutions Ltd in the Irish Sea using survey vessels 'FPV Morven' (20m LOA) and 'Cerys Line' (26m LOA). Vessels will be operating on a 24-hr basis, sailing survey lines between 5-10 knots. Vessels will only be using hull mounted survey equipment, will exhibit the lights and shapes required and will maintain a listening watch on VHF Channel 16.

A-2-Sea Solutions Ltd will be operating the vessel ‘Cerys Line’ and 'FPV Morven' on a 24-hr basis, sailing survey lines between 5-10 knots.

 

Cerys Line and FPV Morven will not be towing any equipment and only hull mounted mutlibeam echosounder will be used.

 

Cerys Line and FPV Morven will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Scott & Telford Water Injection Project - Pipeline Works.

CNOOC Petroleum Europe Limited intends to install an 8” water injection pipeline, from the Scott (PD) Platform to the Telford water injection control structure, an 8” water injection jumper, and an electro-hydraulic umbilical from the central Telford manifold to Telford water injection control structure.

CNOOC Petroleum Europe Limited intends to install an 8” water injection pipeline, from the Scott (PD) Platform to the Telford water injection control structure, an 8” water injection jumper, and an electro-hydraulic umbilical from the central Telford manifold to Telford water injection control structure.

 

The works comprise:

 

Scott Field

 

• Installation of 10” NB water replacement injection flowline (PL6008)

• Disconnection of 10” failed water injection flowline (PL4567).

 

Telford Field

 

• Disconnection of failed water injection pipeline (PL2757) and its tie-in spools (PL2757JWF2/FG, PL2757JWH1/HA and PL2757JWH2/HB)

• Installation of 8” NB replacement water injection flowline (PL6010) and jumper (PL6009)

• Disconnection of failed umbilical (PL1284, PL1284.1, PL1284.2 and PL1284.3)

• Installation of replacement umbilical (PLU6011).

 

 

Vessels planned to execute the works are:

  • Olympic Delta – ROV Support Vessel: Route/Pipeline Surveys; Concrete Mattress Installation; Pipelay Vessel Support.
  • Normand Drott – Trenching Support Vessel.
  • Apache II – Reel Lay Vessel.
  • Deep Arctic – Dive Support Vessel: Umbilical and Flexible Lay from Reel Drive System; Pipeline System Tie Ins; Mattress Installation.
  • Nordnes - Rockdumping.

 

For further information, please contact: Steven McKinney, Steven.McKinney@intl.cnoocltd.com

 

 

 

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Rig - Seafox 4

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Export Cable Corridor Survey - Outer Dowsing Offshore Wind Farm

Outer Dowsing Offshore Wind (a joint venture between TotalEnergies and Green Investment Group) shall be conducting a 3.5 month offshore geophysical survey between the 26th March and 15th July 2022 using vessel Geo Ocean III call sign: LXGP. The survey vessel shall be towing a cable up to approximately 75m behind the vessel (the end marked by a tail buoy) at depths of up to 3m below sea level. The survey vessel shall have limited maneuverability so please allow a safe distance.

Company: Outer Dowsing Offshore Wind

Contractor: GeoXYZ Limited

Survey vessel : Geo Ocean II

Survey vessel call sign: LXGP

 

Earliest start date: 26th March 2021 Latest finish date: 5th July 2022

 

It should be noted that the survey vessel is accompanied by a fishing vessel: Sorrento providing visual reconnaissance for any sea surface obstacles.

Company : Outer Dowsing Offshore Wind

Contractor : NFFO Services Limited

Support vessel : Sorrento

Support vessel call sign : 2XLE

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Survey - Pre-decommissioning surveys of the Millom West and Calder Fields (Ref: 1375)

A 5 Day Pre-decommissioning surveys of the Millom West and Calder Fields using the vessel Fugro Mercator call sign: C6DU5 between 1st May 2022 - 30th June 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro GB Marine

Fugro Mercator

C6DU5

N/A

01/05/2022 - 30/06/2022

For 5 Days

110, 113

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Cable Route Survey - Oceaniq Q&E North and South

Mariners are advised that survey vessels and equipment will be used in the offshore areas and coastal sea waters between UK, France and Belgium. Further nearshore and landfall survey work will be concentrated around Ramsgate,UK, to Oostende,Belgium on the Northern Q&E route and Newhaven,UK to Cayaux-surMer, France on the Southern Q&E route. The nearshore geophysical surveys work will be conducted by DeepBV using survey vessels Deep Seapal and Deep Marker the 24th January 2022 to 31st July 2022.

During this survey the vessels will be deploying underwater survey equipment at which such times the survey vessel may have restricted ability to manoeuvre and approaching vessels are requested to pass at a safe speed and distance. Passing vessels are requested to give a minimum passing clearance of 300 m.

 

Project Description
Oceaniq Q&E route surveys will be conducted by MMT on behalf of Oceaniq, Global Marine Group. Global Marine are turnkey installation contractors to two fibre optic cable systems; Q&E North and Q&E South. A pre-installation geophysical survey with towed/tethered-equipment and sensors is scheduled between January and March 2022, with the installation is scheduled for 2023. The proposed subsea fibre optic cables are required to increase internet bandwidth capacity to meet rising demand. The International Cable Protection Committee (ICPC) notes that approximately 99% of the World’s communication are provided by such subsea cables.


Survey task
A detailed geophysical & geotechnical survey will be carried along the proposed cable route corridor of Q&E north and Q&E south.

  • Q&E north is approximately 112 km long and a 500 m wide corridor.
  • Q&E south is approximately 141 km long and a 500 m wide corridor.

The geophysical survey work will be conducted by vessels Deep Seapal & Marker with hull mounted MBES and SBP with ROTV mounted sidescan sonar, sub-bottom profiler and tethered magnetometer beginning January 2022.

 

Port of Operation
Deep Seapal and Deep Marker will mobilise in the port of Ramsgate, United Kingdom from 24th January 2022.
 

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Survey - Tolmount East Site Survey (Ref: 1373)

A 2 Day Site Survey at Tolmount East using the vessel MV Ocean Resolution call sign: 3EIPG between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG

N/A

25/04/2022 - 31/08/2022

For 2 Days

42

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Wave data buoy - East of Shapinsay

Deployment of an AquaNode Wave Buoy deployed at a depth of 35m, moored with a block on the seabed with a mooring swing radius of <200m about the location given. Colour: Bright Yellow Markings: High-visibility reflective tape, marked 'SURVEY' Dimensions: 750mm Ø x 391mm. Deployment Start 13 April 2022. Deployment End October 2023.

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Survey - Hunter HK-1 Site Survey(Ref: 1369)

A 2 Day Site Survey at Hunter HK-1 using the vessel MV Ocean Resolution call sign: 3EIPG between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG

N/A

25/04/2022 - 31/08/2022

For 2 Days

44

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Rig move - Deepsea Stavanger

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Bell ZX, Victor JM and Kelvin TM Site Survey(Ref: 1368)

A 6 Day Site Survey at Bell ZX, Victor JM and Kelvin TM using the vessel MV Ocean Resolution call sign: 3EIPG or MV Kommandor call sign: MCJO2 between 25th April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

MV Ocean Resolution

3EIPG or

MV Kommandor

MCJ02

N/A

25/04/2022 - 31/08/2022

For 6 Days

49, 44

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Guard Buoy Deployment - Berwick Bank OWF

Mariners are advised that a guard buoy associated with a bottom mounted ADCP device recording metocean data within the proposed Berwick Bank Wind Farm array area will be deployed.

This is part of a wider deployment of three guard buoys and associated equipment from October 2021. The guard buoy replaces one previously lost buoy in January 2022. It will be installed at the same location using the same methods. The Forth Warrior is the planned deployment vessel. A notification will also be provided on Kingfisher Information Services.

 

Expected arrival on site is 14th to 30th April 2022 with the works completed the same day where possible, weather conditions permitting. Therefore, we would like the validity period for this Notice to Mariners to be the 14th April 2022 – 31st October 2022 to allow for any eventualities during installation operations and to cover any ongoing O&M activities throughout the deployment period.

 

Please see the attachment pdf for further details. 

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Inter Array Cable Installation - Seagreen Site Boundary

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install and trench inter-array cabling between the wind turbine generator foundation structures and offshore sub-station platform within the Seagreen site boundary. Operations will commence with cable lay and trenching between wind turbine generator foundation structures, inter array cables will also be installed into the Offshore Substation Platform at a date to be confirmed. Two vessels will be involved in the operation.

Siem Stingray – This vessel will act as the Installation Support vessel, cable installation technicians will be deployed to the wind turbine generator foundation structures using the vessels’ motion compensated gangway system. The cable pulling equipment will be transferred onto the foundation structure and set up ready for the cables to be pulled into the structure and secured in the foundation basement. The motion compensated gangway system can be used for personnel and cargo transfers.

 

Seaway Phoenix – This vessel will lay the inter array cable between adjacent foundation structures. Once the cable has been pulled in and secured at the first foundation, the cable will be surface laid to the second foundation, pulled in and secured. On completion of this operation the cable will be trenched to a pre determined depth utilising a remotely operated trenching vehicle.

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Geophysical survey - Morven offshore wind farm

A geophysical survey of the proposed Morven Offshore Wind Farm Project will commence on the 11th April 2022 for approximately 3 months. The survey involves the use of 2DUHR equipment, Multibeam Echosounder, Sidescan Sonar and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel. There will also be drop-down camera, grab samples, Cone Penetration Tests and boreholes undertaken.

A geophysical survey of the proposed Morven Offshore Wind Farm Project will commence on the 11.04.22 for approximately 3 months. The survey involves the use of 2DUHR equipment, Multibeam Echosounder (MBES), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel. Drop-down camera and grab samples will be collected at approximately 86 locations during the survey, the timing of which is not yet confirmed; Cone Penetration Tests (CPTs) will be undertaken at approximately 150 locations during August; approximately 15 boreholes will be undertaken during September/October.

 

All vessels are requested to maintain a safe distance (500 m) from the survey vessel Ocean Geograph at all times. Vessels will display appropriate shapes and lights when surveying.

 

An Offshore Fisheries Liaison Officer (OFLO) will be present aboard the survey vessel – see details below.

 

Any at sea, operational issues should be directed towards the OFLO in the first instance.

 

More general queries about the survey and/or proposed Project can be directed towards the Company Fisheries Liaison Officer (CFLO) – see details below.

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Fishing Advisory Zone - Ninian North

Seabed snagging hazards following the removal of the Ninian North jacket in April 2022 and the removal of the automatic 500-metre Safety Zone.

Following removal of the jacket structure below sea level, there remain a significant number number of seabed structures & items that are potential snagging hazards, within approx. 200 metres of the jacket position. These include:

  • Jacket footings (to 46 metres above seabed)
  • SSIV structure
  • 12 impressed current anodes and associated cables
  • Umbilicals
  • Pipeline crossings, spans, exposed flanges/bolts
  • Pipeline repair clamps with exposed bolts.
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Survey - Storr 3 Debris Survey (Ref: 1362)

A 1 Day Debris site survey at Storr 3 using the vessel MV Kommandor call sign: MCJO2 between 9th April 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Geosurvey Limited

MV Kommandor

MCJO2

1250m

3m

09/04/2022 - 31/12/2022

For 1 Day

9

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Survey - Storr Field Survey (Ref: 1367)

A 1 Day Storr Field Survey using the vessel MV Kommandor call sign: MCJO2 between 24th March 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Geosurvey Limited

MV Kommandor

MCJ02

N/A

24/03/2022 - 30/08/2022

For 1 Days

9

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Hydrographic Survey - Firth of Clyde

The Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey April in the Firth of Clyde. The proposed works are planned from 30th March 2021 and will last approx. 100 days Using vessel Sound of Raasay call sign:ZNZP9.

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Noble Hans Duel Drilling Rig

The Drilling Rig Noble Hans Duel will be located next to the Southwark Platform for approximately 200 days from April 2022. The drilling rig Noble Hans Duel is locating to the south face of the Southwark Platform. The rig is expected to be on site in the region of 200 days.  It will be fully within the platform's 500m safety zone.

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Cement Overspill at Jacky Field

Cement over spill from historic drilling campaign. Noticed when Jacky platform was removed. This item could potential snag. Approximate size 4m x 5m. 2m in height.

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Lost Grapnel equipment - Shetland HVDC

MV SIMA has been undertaking PLGR works as part of the Shetland HVDC subsea cable link project.  During operations part of the Grapnel hook used to recover debris from the seabed along the cable route was lost. The piece of equipment is diamond shaped and  measures 0.5 x 0.5 m and is approx 50mm thick. Marine operators are advised to be aware of this object during any operations they undertake.

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Site Investigation Surveys - MarramWind Offshore Wind Farm

MarramWind Offshore Wind Farm Site Investigation Campaign will commence from 11th April and run until the 30th November 2022 (including potential for weather delays/downtime).

The Survey vessels Fugro Venturer and Fugro Galaxy will be used as main the vessels to carry out the MarramWind site investigation campaign. At this stage this campaign relates to the Offshore Windfarm (OWF) array area only. Vessel turning areas will extend up to 1km beyond the survey lines.

 

The Site Investigation campaign will comprise of the following surveys for the provision of the data outline below.

  • Geophysical survey - consisting of a bathymetry survey using multi-beam echo sounding (MBES), hydro-acoustic positioning tracking USBL system, seabed mapping (side scan sonar (SSS), sub-bottom profiling (SBP), and seismic 2DUHR. The purpose of the geophysical survey is to identify the seabed and sub-seabed conditions within the survey area.
  • Geotechnical survey - a sampling and testing programme within the survey area to evaluate the nature and mechanical properties of the superficial seabed sediments. The survey programme includes vibro-coring and piezocone penetrometer testing (PCPT).
  • Environmental survey - to map the distribution and extent of marine benthic habitats. This will comprise a benthic sampling programme to collect drop-down video (DDV) footage and grab samples for the analysis of benthic fauna, particle size distribution, and sediment chemistry.

The MarramWind Offshore Wind Farm Site Investigation Campaign will commence from 11th April and run until the 30th November 2022 (including potential for weather delays/downtime).

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Mull – Coll Subsea Cable Installation

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mull-Coll submarine electricity cable. The purpose of this notice is to outline the working area for the vessels along the cable lay route.

Please be advised that Global Offshore (on behalf of SHEPD) are conducting the installation of the replacement Mull-Coll submarine electricity cable. The purpose of this notice is to outline the working area for the vessels along the cable lay route. There will be two vessels associated with the Mull-Coll cable installation and post-lay survey process. In summary:

1. Boulder Relocation – Global Symphony (entire route)

2. Cable Lay Vessel – Global Symphony (entire route)

3. Post-Lay Inspection Burial (PLIB): Global Symphony (entire route)

4. Post-Lay Nearshore Survey of Cable: Delta 9151 (or equivalent vessel depending on availability)

 

Vessels carrying out the subsea cable works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m from the construction vessels during marine operations (COLREGs Rule 16 & 18). Vessels associated with the works will monitor VHF Channel 16 at all times.

 

Description of Installation/PLIB Operations CLV Global Symphony will be relocating boulders in preparation for cable lay operations and will then lay the Mull to Coll cable. The PLIB operations will be carried out by the Global Symphony immediately after completion of cable lay operations. The nearshore sections of the marine cables will be surveyed using the Delta 9151 (or equivalent vessel). All above-described operations will involve ROV equipment deployed to seabed. The duration of the operations is shown on Table 1. All vessels will be limited in maneuverability. Other vessels should maintain an appropriate and safe distance of 500m when passing the vessels undertaking cable operations and should pass at the lowest speed to avoid vessel wash effects. The vessel will be working 24 hours per day during these operations.

 

 

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Rig - Scarabeo 8

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Erda

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Seafox 7

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - West of Orkney Wind Farm

This geophysical survey shall take place from 2 April 2022 to 31 August 2022 and will occur in three phases: 1) Course survey lines over the offshore option agreement area and single survey lines along potential cable routes to Caithness; 2) Detailed survey in the offshore option agreement area. This phase is divided into three sub-sections and; 3) Detailed survey of potential cable corridors to Caithness. The Relume will carry out the work and the port of operation is Scrabster.

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Survey Activity - Sheringham Shoal and Dudgeon Extension

Mariners are advised that a hydrographic and geophysical survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm on the North Norfolk coast using the vessel MV Ocean Endeavour starting around the 1st March 2022 and will continue for 60 days (estimated).

Survey operations shall be conducted for Equinor ASA. The survey will involve survey vessel MV Ocean Endeavour conducting hydrographic and geophysical survey operations over sites as described below.  The surveys will consist of multibeam echo sounder, pinger, side scan sonar, magnetometer and seismic equipment. The side scan sonar will be towed up to 300m behind the vessel and 10m above the seabed with the magnetometer towed behind and the seismic equipment will be towed 150m behind the vessel. 

 

Boundary coordinates are as follows:-

Point

Latitude

Longitude

1

53°13'49”N

001°09'28"E

2

53°05'29"N

001°31'29"E

3

52°59'13"N

001°22'41"E

4

53°03'00"N

001°12'12"E

 

During the survey, the vessel will display the prescribed lights and signals for survey operations and will be monitoring VHF Channels 16 and 12.

 

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Survey - Sheringham Shoal and Dudgeon Extension

Mariners are advised that a hydrographic and geophysical survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm on the North Norfolk coast using vessel Ocean Researcher starting around the 1st March 2022 and will continue for 120 days (estimated).

Mariners are advised that a hydrographic and geophysical survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm on the North Norfolk coast starting around the 1st March 2022 and will continue for 120 days (estimated).

 

Survey operations shall be conducted for Equinor ASA. The survey will involve survey vessel MV Ocean Researcher conducting hydrographic and geophysical survey operations on sites as described below. The surveys will consist of multibeam echo sounder, side scan sonar and magnetometersonar, and towed magnetometer arrays. The side scan sonar and magnetometer arrays will be towed up to 300m behind the vessel and 10m above the seabed.

Boundary coordinates are as follows:-

Point

Latitude

Longitude

1

53°13'49”N

001°09'28"E

2

53°05'29"N

001°31'29"E

3

52°59'13"N

001°22'41"E

4

53°03'00"N

001°12'12"E

 

During the survey, the vessel will display the prescribed lights and signals for survey operations and will be monitoring VHF Channels 16 and 12.

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Guard Vessel Deployment - Dogger Bank A Export Cable

Installation of the Dogger Bank A Offshore Windfarm Export Cable will commence on the 14th April 2022. Guard vessels will be deployed to protect the cable bundle from start of cable lay until the cable is adequately protected by means of trenching or rock placement.

To provide the required coverage, approximately 15 guard vessels will be used in the period from the 12th April 2022 until the 14th August 2022. Durations at each location will depend on progress of the cable installation, trenching and rock placement operations. Not all the vessels are expected to be used concurrently.

 

The primary purpose of the guard vessels is to protect exposed cable along the Dogger Bank A Export Cable corridor by monitoring and issuing warnings to marine traffic operating within 6nm of the construction area with a Closest Point of Approach (CPA) < 1.5nm. More specifically, the focus will be on those vessels with potential to be engaging in bottom contact activities such as fishing and anchoring, as these activities pose a risk not only to the exposed cable bundle but also to the vessels themselves.

 

The guard vessels will be clearly marked and display a highly visible "GUARD" sign on each side. The vessels will operate 24hrs, in all but extreme weather. Exchange of vessels on site will ensure the relevant section of cable is never left unguarded.

 

In sections where cable protection has been completed, guard vessels will be released and sections will be opened up for fishing or use of other of equipment with seabed intervention. This may not necessarily be in a sequential order from shoreside outwards.

 

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Dogger Bank A Export Cable Installation

The cable laying vessel, NKT Victoria, will install the Dogger Bank A export cable in the Southern North Sea in two sections. In addition, concrete mattresses will be installed at the Langeled and SEAL pipeline crossing.

The work will be performed in two Campaigns, starting on the 14th April 2022 and continuing until approximately 2nd June 2022. The work will be continuous, 24 hours a day. Coordinates and chart of the route are provided below.

 

During the full Cable lay operation (including period when NKT Victoria has left site to pick up the campaign 2 cable) until the cable has been protected by means of burial or rock placement, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention.

 

The first campaign will start with installation of concrete mattress at the Langeled pipeline crossing on the 14th April. The mattresses will be installed by NKT Victoria immediately prior to cable installation. A guard vessel will be in placed at crossing location as soon as the mattresses have been installed.

 

Starting from the landfall site, The NKT Victoria will then surface lay the export cable in a seaward direction to approx. KP70. After completing the first cable lay, she will leave site to pick up the second cable.

 

The second campaign will start around the 9th May 2022, with installation of concrete mattresses at the SEAL pipeline crossing. The cable laying operation will be initiated by jointing the campaign 1 cable to the cable in campaign 2, followed by cable lay towards Dogger Bank A Wind Farm. The end of the cable will be temporarily wet stored on the seabed until the installation of the offshore platform and later pull-in in 2023.   

 

During operations the NKT Victoria will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message.

 

It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the Cable laying vessel and pass at reduced speed. fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

 

An Offshore Fisheries Liaison Officer will be onboard NKT Victoria to provide support and coordination to fishing vessels, please see contact details below.

 

In the period between cable lay and cable burial, or protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.

 

To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM). The guard vessels will contact vessels approaching within 1.5Nm.

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Vibrocore Survey Area 1804 - off East Anglia

CEMEX have commissioned a vibrocore survey to take seabed samples in Exploration Area 1804 off East Anglia. CEMEX have commissioned Coastline Marine Services to undertake a vibrocore survey, onboard the vessel Flat Holm, in The Crown Estate Exploration Area 1804 off the coast of East Anglia. Several seabed samples will be collected from the areas defined in this notice during Spring 2022.

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Confirmation of Cardinal Buoys Deployment – at the Pickerill A Jacket

On the 29th March 2022, Leask Marine's C-Force completed its buoy deployment at 11:00 . The vessel Departed Pickerill A Field at 13:00 for transit to Great Yarmouth after the completion of work and arrived alongside at 20:00 the same day. This is a final notification to confirm the 4 cardinal buoys are in their final position and will remain in place until 30th June 2024 as per approval from ML/784/0.

Pickerill A former Platform Lat: 53° 32’ 57.0875” N Long: 01° 04’ 33.3425” E

 

The cardinal buoys will be deployed within the Pickerill 500 m zone at the following coordinates:

 

UPDATE: The latest version of the marine Licence accepts the 4 buoys final location is precisely as above.

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Deployment of Acoustic Receivers - Moray Firth

The Atlantic Salmon Trust have installed 15. moorings in the Moray Firth. The moorings hold research equipment that support acoustic ID tag transmitters (range testing tags) and hydrophone receivers that log the acoustic ID tag transmitters. The moorings will be removed by the 31st July 2022.

The acoustic receivers have riser lines with scientific instruments and extend vertically no more than 2m (LAT). The moorings will be recovered in their entirety.
All enquiries should be made to the Atlantic Salmon Trust Tracking Co-ordinator (lorna@atlanticsalmontrust.org).

 

If you trawl or dredge up a receiver (see photos), please do not throw it back into the water. Please retain it and contact lorna@atlanticsalmontrust.org to arrange collection.

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Completion of works - Moray East Offshore Transmission & Offshore Substation Platforms

The works associated with the Offshore Transmission (OfTI) and Offshore Substation Platforms (OSPs) were completed on the 13th January 2022. Overall care, custody and control of the works has been handed over to the Moray East Operations and Maintenance Team.  Please note, construction works associated with the Windfarm Infrastructure remain ongoing.  

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WTG Installation and Commissioning - Moray East Windfarm

Moray Offshore Windfarm (East). Now that installation is complete. The commissioning of the 100 WTGs has now been completed and no construction activity is planned for the period 24th January 2022 to 31st January 2022. Some construction works remain outstanding and will take place prior to the final commissioning of the development.

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Dogger Bank A & B, Nearshore Intervention Works

Nearshore intervention works will resume at the Dogger Bank A&B export cable landfall site. Diving operations, trench dredging and survey works will all form part of the scope of works

The dive support vessel Isle of Jura using a five-point mooring spread, including anchors, ground tackle, riser chains and mooring cans, continues to work at the DBA export cable HDD exit location. Each mooring can is fitted with a yellow marker light displaying a set flashing sequence The Isle of Jura will remain on station/site during the night and be manned 24 hours throughout.

 

Dive operations will be carried out from the Isle of Jura. These operations may continue during the hours of darkness. A short safety message will be broadcast on VHF CH16 announcing start and end of dive operations. Flag ‘Alpha’ and the appropriate lights will be displayed during dive operations. Vessels are requested to maintain a 500m safe passing distance at all times.

 

The MV Pulsar will be carrying out MBES surveys of the seabed and along the pre-cut trenches throughout the dredging activities. The survey gear will be positioned on a side mounted pole and extended into the water. MV Pulsar will make several passes over the area at a reduced speed. MV Pulsar will transit from Bridlington Harbour to the work site throughout the project. Vessels are requested to keep well clear and pass at reduced speed during survey works.

 

The dredger barge Abeko Server 3 will be carrying out spoil management, trenching and backfilling activities. The backfilling activities will commence once the submarine power cable has been installed. The Abeko Server 3 will remain on station/site during the night and be manned 24 hours throughout. A tug, the Sil Jeske B will remain with the Abeko Server 3 to assist in barge movements/relocation on site and towing to Port when required.

 

The CTV Celtic Mara will be carrying out crew transfer activities from Bridlington Harbour to the Isle of Jura daily.

 

All vessels will display lights and day shapes appropriate to their work scope.

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Survey - Cygnus Debris Clearance (Ref: 1352)

A 7 Day Debris Clearance survey at Cygnus using the vessel MV Kommandor call sign: MCJO2 between 24th January 2022 - 30th June 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Limited

Kommandor

MCJO2

N/A

24/01/2022 - 30/06/2022

For 7 Days

44

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Survey - Bunter outcrop borehole drilling (Ref: 1365)

A 59 Day Shallow Drilling at the Bunter outcrop using the vessel Valaris Rowan Norway call sign: 8770077 between 13th April 2022 - 30th June 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Valaris plc

(Ensco Offshore UK Limited)

Valaris Rowan Norway

8770077

N/A

13/04/2022 - 30/06/2022

For 59 Days

43

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Survey - Greater Schiehallion (Ref: 1360)

A 100 Day site survey at the Greater Schiehallion using the vessels Subsea Viking call sign: LCPX, Veritas Viking call sign: LMIB3, Maria-G call sign: 3FMM5, Artemis Odyssey call sign: LNUT3 between 1st April 2022 - 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

PXGeo

Subsea Viking

LCPX

Veritas Viking

LMIB3

Maria-G

3FMM5

Artemis Odyssey

LNUT3

160m

8m

01/04/2022 - 30/08/2022

For 100 Days

204, 205

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Survey - Diadem Exploration Well (Ref: 1353)

VSP will be used to characterise the Diadem exploration well which will involve the use of a seismic array from the drilling rig. will involve a three-gun array suspended from the rig (3 x 250 cubic inch guns). The VSP will be undertaken for 7 days on the 16" section, 13 days on the 12¼" section and 8 days on the 8½ section. The temporary 500 m exclusion zone of the drilling rig has been assumed as the working radius. Between 1st April 2022 and 30th November 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Capricorn Energy UK Limited

N/A

N/A

01/04/2022 - 30/11/2022

For 1 Day1

22

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Uncharted Wreck - Outer Dowsing Offshore Windfarm

A marked wreck not on the Admiralty chart or wreckfinder has been discovered by the guard vessel Celena within the Outer Dowsing Offshore Windfarm.

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Rig - Safe Caledonia

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Deployment of a SeaWatch LiDAR Buoy (SWLB) - Awel Y Mor Offshore Wind Farm

Awel Y Mor Offshore Wind Farm Limited are planning the Deployment of a SeaWatch LiDAR Buoy (SWLB); this is a sea state measurement instrument (referred to as ‘the equipment’). The deployment location is within the UK Sector off the North Wales coast at Liverpool Bay. The equipment will be deployed within the Awel Y Mor Offshore wind farm array limits and will be deployed for approximately twelve months from March 2022.

The equipment will be located as close as reasonably practicable to the coordinates as provided within this Notice to Mariners.

 

The buoy was successfully deployed the 26th of March and the coordinates for the as laid main anchor position is updated.

 

Scheduled maintenance is planned in the autumn/winter of 2022, from September onwards.

 

Unforeseen maintenance may also be required. The mooring design is specific to each SWLB deployment and location. The equipment will be moored through a combination of steel chains, rope and rubber cord to approximately 3000 kg anchor weight at the seabed.

 

The equipment is an integrated Seawatch Wavescan buoy and ZX 300M LiDAR; the purpose of the equipment is to collect oceanographic and meteorological data using a single platform. The equipment is supplied and charged by an onboard power system which uses methanol fuel cells and solar panels to recharge onboard lead acid batteries.  

In order to minimise the risk to other sea users, the measures listed below will be adopted for this deployment:

 

The equipment will be equipped with a F1 (5) Y 20s light with 4-5 nautical mile range; the light will be mounted at the top of one of the masts, approximately 4 m above sea level.  

 

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Dunlin Alpha Decommissioning Project - Topsides Removal Phase

Topsides removal activities to be undertaken at the Dunlin Alpha installation location, commencing on or around 01/04/22, for a period of several months

Dunlin Alpha topsides removal decommissioning activities are planned to be undertaken in 2 separate campaigns:

  • The initial campaign is planned for April – May 2022 and will involve use of the Heerema HLV "Thialf" to separate and remove a number of platform modules.  These modules will be transported to the Vats facility in Norway for onshore recycling and disposal. 
  • The second campaign is planned to commence on or around June 1st and will involve use of Heerema SSCV "Sleipner" to remove further platform modules and then lift and remove the Dunlin Module Support Frame (MSF). These will then be transported to the Vats facility in Norway for onshore recycling and disposal. 

The Dunlin Alpha - Aid to Navigation unit will be turned off at this time and the HLV / SSCV will act as mitigation to reduce navigational risk during this period. A temporary Aid to Navigation will be placed on the installation during any periods where a decommissioning vessel is not in attendance at location (ref: Consent to Locate permit CL/469/2 - attached).

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Rig - Transocean Endurance

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Askepott

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Stena Spey

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Dropped object - Eastern Irish Sea

The seabed frame of the Mona metocean buoy has been lost in the Eastern Irish Sea. The last known location was: 53°40.268' N, 003°53.773' W. However, it seems likely that is has been dragged off location, potentially approx. 200m in a NW direction. The Mona buoy and accompanying chain have been recovered, but the seabed frame and approximately 30m of the combi rope groundline attached to the sea frame is lost. The Project is working to recover the object.

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Well Intervention Work - West Sole Bravo / ERDA JUB COMOPS

Well intervention work at West Sole Bravo (48/6) supported by the ERDA JUB. Estimated arrival 29th March 2022, duration of up to 60 days.

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Rig - Maersk Resolute

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Hazard - 600m tow wire - Dover Straight, Goodwin Sands

Please be advised that the Dover Coastguard has reported a hazard of 600 metre tow cable along the Dover straight Goodwin Sands. This will be a hazard to any fishing vessels.

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Unmanned Surface Vessel (USV) Survey - Irish Sea

Operations of a remotely piloted Uncrewed Surface Vessel (USV) are planned out of Rhyl, Fleetwood and Beaumaris ports. There will up to 4 USV’s operational at any one time.

A support vessel will escort the USV from the active ports to the port limits. Although the vessel is uncrewed, it is managed throughout the 24hour operation, piloted remotely using 360 degree cameras and other navigational aids.

Name    X-11 Uncrewed  X-14 Uncrewed X-15 Uncrewed

MMSI     232033343        232035680        232035682

Beam      2.2m                2.2m                2.2m

Speed     3.5 knots         3.5 knots          3.5 knots

Draught    1.5m              1.5m                  1.5m

Tonnage   750kg             750kg              750kg

 

The USV sends real time images and situational awareness data over satellite to a team of operators keeping watch and controlling the vessel remotely 24/7. Safety Precautions: The USV is equipped with the following to make it conspicuous to other marine traffic:  AIS  Navigation Lights & Sound Signal  Active Radar Reflector Superstructure Painted Yellow Seafarers are asked to avoid contact with the vessel and be aware of the operational area during this period. XOCEAN - Emergency Contact Details: Clodagh McAnerney (Project Manager) +353 87 676 8806 clodagh.mcanerney@xocean.com  JP Kearns (Marine Superintendent): +353 87 051 8601 jp.kearns@xocean.com Kevin Harnett (COO) +353 87 975 3797 James Ives (CEO) +353 87 123 5175

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Geotechnical Survey Campaign - Hornsea Three

Mariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of Geotechnical survey works from the 1st of April 2022. The survey is being undertaken for the purposes of geotechnical investigations of the Hornsea Project Three Offshore Wind Farm (Hornsea Three) project, located within the UK Sector of the North Sea, off the coast of East Yorkshire.

Please be advised that the operations are anticipated to mobilise from the 1st of April 2022 with investigations targeting the site. The works will last for approximately 70 days . The exact survey dates are dependent on mobilisation time, weather and work progress. Note that the vessels will have limited manoeuvrability and it is requested that all vessels operating near the survey vessels maintain a safe distance (at least 500m) and pass at minimum speed.

 

It is requested that anybody having knowledge of any potential objects submerged or moored on the seabed within the survey area that could be damaged or form a hazard to the survey vessel and its equipment advises Hornsea Three’s Onshore Fisheries Liaison of their position and nature.

 

Please see attached Notice to Mariners for further details.

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Anchor Block Removal - Wave Hub Site - Hayle, Cornwall

Mariners are advised that between 4th March and 15th August 2022, subject to suitable weather windows, operations will take place to remove redundant concrete and steel anchor blocks.

This will include ROV, subsea rigging, winching and under-slinging operations carried out from work vessels and heavy lift barges. Throughout said operations, these vessels shall be restricted in their ability to manoeuvre and shall be marked/ lit as such. A wide berth is requested.

 

Prior to commencing operations, an all-ships safety call shall be broadcast on VHF Ch16 confirming vessels on site and times of operation. All vessels will be contactable on VHF CH16, DSC70 for further information or Working Channel VHF 17.

 

The work will be carried out by Keynvor Morlift Ltd, Unit 15, Falmouth Wharves, Falmouth, Cornwall TR11 2TF. Tel:+44 (0)7791642452  Fax: +44 (0)845 014 9735 info@keyvormorlift.co.uk  www.keynvormorlift.co.uk.

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B-Block Decommissioning - DSV Activities - Balmoral Phase 2 Decommissioning

DSV Seven Kestrel is due to mobilise in Peterhead on 1st April 22 to undertake a 41 day offshore campaign to execute the Balmoral Phase 2 Decommissioning Scope. The vessel will be working at Balmoral, Brenda and Nicol 500m safety zones. Upon completion of the offshore campaign, the vessel will demobilise in Peterhead.

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Construction of Wind Farm - Neart na Gaoithe Offshore Wind Farm Limited

Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) will commence construction work for Neart na Gaoithe (NnG) Offshore Wind Farm, from the 9th August 2020, with the start of casing and pile installation operations on the wind farm site.

NnGOWL is developing the NnG Offshore Wind Farm, jointly owned by EDF Renewables and ESB, which is located in the outer Firth of Forth, Scotland. The NnG wind farm area is 15 km east off Fife Ness and 29 km from the East Lothian coastline and covers an area of 105 km2

The wind farm consists of 54 no. wind turbines (WTGs) and 2 no. Offshore Substation Platforms (OSPs), with a total capacity of approximately 45 0MW. Water depths across the offshore wind farm area generally range from 40 to 60 m below LAT. The generated power will be transmitted to the grid via two subsea export cable circuits which will reach landfall at Thorntonloch Beach, East Lothian, Scotland. Specific details and location of activities within the Wind Farm Area and Export Cable Corridor will be provided via subsequent notices as work progresses.

 

Buoyage

 

Five special markers are now in position:

 

Name Location

SP 1 - Special Mark - Fl Y 5s light character

56°18.180'N 02°12.075'W

SP 2 - Special Mark - Fl Y 5s light character

56°15.643'N 02°09.329'W

SP 3 - Special Mark - Fl Y 5s light character

56°12.294'N 02°15.796'W

SP 4 - Special Mark - Fl Y 5s light character

56°14.038'N 02°18.975'W

SP 5 - Special Mark - Fl Y 5s light character

56°18.924'N 02°18.951'W

 

Four cardinal buoys are due to be deployed the week commencing 16th March. Planned deployment locations

 

Name Location

NNG - North Cardinal - Quick (Q) white light character

56°20.425'N 02°14.617'W

NNG - East Cardinal - Q (3) 10 s white light character

56°14.329'N 02°08.558'W

NNG - South Cardinal - Q (6) + Long (L) FL 15 s white light character

56°12.294'N 02°09.760'W

NNG - West Cardinal - Q (9) 15 s white light character

56°17.057'N 02°21.084'W

 

A steel chain will be connected to each marker buoy, and the chain will be present through the water column, connected to an anchor placed on the seabed.

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Survey - Dogger Bank South Wind Farm

RWE Renewables has contracted Fugro GB Marine Limited (Fugro) to carry out a geophysical and environmental site investigation in the North Sea for the proposed Dogger Bank South Offshore Wind Farm (DBS) site. The Dogger Bank South Offshore Wind Farm site is located 70 Nm East of Flamborough Head on the southern edge of Dogger Bank. The Dogger Bank South site are expected to be carried out with the Mainport Geo call sign:V7A270 from 23rd March 2022 until approximately the 31st October 2022.

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Hydrographic Survey - Loch Carron

The Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey March in Loch Carron. The proposed works are planned to start on 10th March 2021 and will last approx. 100 days Using vessel Maid of Bute call sign:ZNP08.

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Hywind Tampen installation

Activity: Installation of 11 floating wind turbines with anchor system on Hywind Tampen, in the area between Snorre, Visund and Gullfaks. Two export cables will also be installed from Hywind Tampen to Snorre and Gullfaks.

Period: From 1 April until the notice is canceled in Efs, autumn 2022. Precautionary area: (1)

 

Vessels: "Skandi Skansen" (MAXR6): Installation of anchor system 1 April - 1 June.

"Skandi Iceman" (LFMY): Towing and installation of floating wind turbines from approx. 15 May until autumn 2022.

 

Note: To avoid damage to unprotected equipment on the seabed and in the water column, as well as on fishing gear, all fishing with bottom gear within the precautionary area is to be avoided. The area will also be monitored by the Equinor Operations Center, which can be reached on VHF channel 14 or on telephone +47 55 14 32 78. Until completion, this will be an extended precautionary area. We will provide an updated Notice to Mariners regarding the permanent precautionary area that will be established when the wind farm installation is completed. Charts: 304, 307.

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Survey - Liverpool Bay Reservoir Survey (Ref: 1324)

A 99 Day reservoir survey in Liverpool Bay between 15th March 2022 - 15th July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

ENI

 

 

15/03/2022 - 15/07/2022

For 99 Days

110

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Rig - West Elara

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Transocean Equinox

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Offshore Sub-station Hook Up & Commissioning Activity - Seagreen Offshore Windfarm

A period of hook-up and commissioning activity will commence at the Seagreen Offshore Wind Farm Sub-Station platform.

On behalf of Seagreen Wind Energy Ltd, Petrofac will hook-up and commission the Seagreen offshore sub-station platform. To assist in this activity the Jack Up Barge Borr Ran will be positioned next to the sub-station platform to act as accommodation for those personnel involved. The Borr Ran Jack Up Barge will be assisted into position by an anchor handling tug and two support tugs. During final positioning a four-point anchor spread will be utilised. Once the barge is positioned the anchor spread will be removed. During the period the anchor spread is deployed there shall be a 750 metre exclusion zone centred around the sub-station platform, this zone shall apply to all vessels other than those involved in the operation.  

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Drill rig positioning - Dana Western Isles

Island Innovator on location at the Western Isles South Drill Centre April - September 2022. The Island Innovator drill rig will arrive at the Western Isles South Drill Centre from the 1st April 2022 and will remain on location until latest 30th September 2022 to drill a new well.

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Anchor pre-lay - Dana Western Isles

Eight anchors to be pre-laid at the Western Isles South Drill Centre during March in advance of drill rig arrival in early April (rig arrival will be subject to separate notification). A new well is due to be drilled at the Western Isles South Drill Centre from early April 2022. Prior to arrival of the drill rig, eight rig mooring anchors and associated chains will be pre-laid on the seabed.

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Seagreen Offshore Wind Farm – Maintenance of Acoustic Monitoring Devices

Maintenance works will be undertaken on the five acoustic monitoring devices located in and around the Seagreen Offshore Wind Farm site.

Mariners are advised that maintenance works on the five acoustic monitoring devices in an around the boundaries of the Seagreen Offshore Wind Farm will be undertaken. The Marine Scotland Science vessel Alba na Mara plans to service the 3 monitors outside the site boundary this evening 14th of March. The 2 monitors inside the site boundary will be serviced tomorrow, 15th March. These acoustic monitoring devices collect real-time noise measurements for a period of 36 months. The devices will be inspected and maintained at least every four months.

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Seagreen Offshore Wind Farm –Installation & Commissioning of Wind Turbine Generators

Installation of wind turbine generators (WTG) will commence within the boundaries of the Seagreen offshore wind farm.

On behalf of Seagreen Wind Energy Ltd, MHI VestasOffshore Wind will commence the installation and commissioning of 114 wind turbine generators.There shall be four vessels utilised during thisoperation.The Jack up Vessel Wind Orca will be the main installation vessel. Wind Orca will transport the WTG components to site, jack up to the required height next to the foundation structure and install the WTG components.The Service Operation Vessel (SOV)Acta Centaurus will provide accommodation for the WTG commissioning technicians. Personnel will utilise the Acta Centaurus’s walk to work gangway system to access the WTG structures for commissioning activities.Two Crew Transfer Vessels(CTV’s), HST Euan and the HST Harri will support the above two vessels during installation and commissioning activities.The above vessels are expected to arrive at the Seagreen site on or around the 5thof December, WTG installation activities shall continue until late 2022.

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Inch Cape Offshore Met Mast AIS currently non-operational

Please be advised that the AIS on the Inch Cape Offshore Met Mast is currently non-operational. The marine navigation lights, foghorn, aviation lights remain operational. This fault will be investigated and notification provided once the AIS is operational again. 

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COSLPioneer MODU - Abigail Field

COSLPioneer MODU will be drilling in the Abigail field for Ithaca Oil and Gas Limited for approximately 60 days, with the anchors being pre-laid approximately two weeks prior to the rig arriving onsite. Activity will take place from 7th March until 31st May 2022.

Ithaca Energy (UK) Ltd is planning to use the COSLPioneer to re-enter the currently suspended appraisal well (29/10B-8) to complete this as a production well (29/10B-P2W) at the Abigail drill centre.  The activity will last 74 days (including anchor pre-lay).  A guard vessel will be on location from the pre-laying of the anchors.

The field lies within the United Kingdom Continental Shelf (UKCS) Block 29/10, approximately 233 km south-east of Peterhead, 36 km from the UK/Norway median line and 13 km west of the Ithaca Energy (UK) Limited owned floating production facility, the FPF-1.

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Rig - Valaris Viking

This oil & gas drilling rig has moved to this new position. Rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Exposed Pipe - Temporary marker buoy

This notice to mariners (NtM) relates to the location of a temporary marker buoy positioned between the exposed export cable ducts protruding from the seabed, and further relating to spoil piles, which are estimated to reduce water levels at LAT by approximately 25%.

**Update** The temporary buoy has been moved to a new location to tyhe South West of the work site while works are in progress

 

 

On completion of all the nearshore works, estimated for end July 2023, the temporary marker buoy will be removed from site.

 

This NtM supersedes LF500013-MIP-DOG-NOT005 Rev02, issued on the 26th Aug 2021

 

The marker buoy characteristics are: Yellow Special Mark, light pattern: Fl(Y)5s

 

Mariners are reminded to navigate with caution, keeping a safe passing distance from the temporary marker buoy and keeping a continuous watch on VHF Ch. 70/16 when navigating the area.

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Decommissioning Activity at the Indefatigable 18A Installation

Decommissioning related activities – HCF Campaign at the Indefatigable 18A Installation. Planned HCF works are due to commence on the Indefatigable 18A Platform (UKCS 49/18A). The Jack up Barge Haeva, departed from Bessemer on 9th February 2022 and transited to the Indefatigable field, where it has been holding for a suitable weather window to come alongside the platform.

The HCF operations will commence around  8th March 2022 following the interface activities .The HCF campaign duration is 142 days and finish approximately 25th July 2022.

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Metocean Buoy Deployment - Northern Endurance Project (NEP)

MetOcean buoys will be installed to monitor the local metocean conditions within the NEP carbon capture project area at 7 separate site locations MO1–MO7. Each site shall have a seabed frame with attached acoustic release mechanism and a surface navigation buoy. At site MO2 a wave buoy will also be installed. Deployment operations are estimated to be carried out over a total of 4-6 days from 1st March 2022 for 6 months using the vessel Forth Warrior call sign: 2JHR8.

The navigation buoys are yellow pillar shaped special marks, exhibiting yellow St Andrews cross day shapes. The buoys are each fitted with a yellow navigation light with sequence: Fl Y 5s


The wave buoy at site MO2 is a 1.1 m diameter yellow spherical buoy fitted with a flashing antenna with sequence: Fl(5) 20s


It is advised to give 300m clearance to each mooring location
 

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Drilling Activity - Valaris 122 at Edinburgh

The Valaris 122 (jack up drilling rig) will be conducting drilling operations at the Edinburgh field on the 30/14a-Edinburgh well. The Valaris 122 will be drilling at a standalone location in the Edinburgh field on a single well campaign. The total duration of drilling and completion activities is expected to last approximately 160 days.

Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone. 

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Well Drilling Campaign - Catcher Infill

Notice to alert sea users to drilling activity within the Catcher Area using the Maersk Innovator MODU in Block 28/9.

 

The Maersk Innovator Drilling Rig is due mobilise from Denmark to the Catcher Area in February 2022 and should be on location at the Catcher North drilling template in early March 2022. 

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Subsea Clearance Project - Ex Northern Producer FPF 500m Zone

EnQuest Heather Ltd intends to undertake the seabed clearance works in the ex Northern Producer FPF 500m zone in relation to Dons Field decommissioning works commencing 01 April 2022.

The workscope comprises of several ROV Construction Support Vessels (CSV) performing the seabed clearance of the risers, Mid Water Arch, Riser Base Structure and surface laid spoolpieces, pipelines and umbilicals up to the point of burial.

 

Initially an ROV Construction Support Vessel (CSV) will perform the recovery of the concrete protection mattresses from over the surface laid spoolpieces, pipelines and umbilicals and will perform the cuts on these items up to their point of burial at full trench depth or start of rockdump. This will be followed by an Anchor Handling Tug (AHT) which will recover the Flexible risers and the surface sections of the flowlines and umbilicals before releasing the Mid Water Arch (MWA) and floating it to the surface. The MWA will then be towed to Lerwick in the Shetland Isles for disposal.

 

Finally another CSV will be in field to perform the recovery of the MWA clump weights, Riser Base Structure, rigid spoolpiece and pipeline sections along with any remaining concrete protection mattresses and grout bags. The 500m zone will then be surveyed for debris, the debris will be recovered and a final 500m zone MBES clearance survey will be performed to confirm the 500m zone is clear of any oil field related debris and that no snag hazards remain. An over trawl survey will then be performed by the SFF to confirm there are no snag hazards before issuing a seabed clearance certificate and opening up the area to fishing activity.

 

All the vessels will be positioned within the ex Northern Producer FPF 500m Zone during these activities with the AHT also towing the MWA to Lerwick along a predetermined tow route.

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Survey - Goldeneye Seabed Clearance Survey (Ref: 1344)

A 0.5 Day Seabed Clearance Survey at the Goldeneye using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 0.5 Day

14

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New Safety Zone: Kyle/Curlew DUTU Structure

A new safety zone has been granted by the Secretary of State for the above location/structure. For installations already on location the safety zone will come into force on 1st March 2022.

This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

 

Your FishSAFE Information will be updated in the next release.

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Survey - Minke & Orca Survey (Ref: 1355)

A 4 Day survey Minke & Orca using the vessel MV Kommandor call sign: MCJO2 03rd March 2022 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd 

MV Kommandor

MCJO2

N/A

03/03/2022 - 31/07/2022

For 4 Day

44

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Abandoned Well - 15/24b-5

No structure left on the seabed – decommissioned fully.

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Rig move - Irish Sea Pioneer

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Anchors on seabed - Tybalt Well

12 pre-laid anchors will be left on the seabed complete with lengths of chain when the rig departs location late December and as such may cause a hazard to fishing vessels. Anchors will be on location for 2-3 months until the rig returns. Update: Due to a change in well sequence, the expected duration of storage has been extended to Summer 2022.

As laid anchor pattern with rig in position attached, notice will be updated after rig departure to show only the remaining equipment.

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Possible Hazards (initial ‘trawl sweep’ findings)

The Moray East Over Trawl Survey (Export Cable Trawl Sweep) was undertaken by the MV Sardonyx between the 1/9/2021 and the 5/9/2021. The work was undertaken using appropriate gear types for the locations outlined below, with the crossings being undertaken successfully. At Section 1, at crossing position 57°41.962'N 002°33.078'W, the gear encountered a peak tension and a reduction in gear spread.

At this location, the export cables are buried to the required depth and the trawl gear did not pass over any rock protection or any known boulders, as such the cause of the peak tension is unknown. This will be investigated by the project at the earliest available opportunity.

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Survey - Dogger Bank Easternmost Shoal S

Commencing from the start of April for a period of approximately three months, bathymetry survey operations will be undertaken in the Dogger Bank Easternmost Shoal S area using survey vessel 'Noortruck'.

A-2-Sea Solutions Ltd will be operating vessel 'Noortruck' on a 24-hour basis, sailing survey lines between 5-10 knots.

 

Equipment will not be towed and only a hull mounted multibeam echosounder will be used.

 

Vessel Noortruck will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

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Rig - Valaris 72

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Noble Lloyd Noble

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Intrepid

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Rowan Stavanger

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - 590021

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris Gorilla VI

This oil & gas drilling rig has moved to this new position. Rig are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Curlew Pipeline and Seabed Clearance Survey (Ref: 1335)

A 5 Day Clearance survey at Curlew B,C,D and pipeline and umbilical routes using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 5 Days

29

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Survey - Kingfisher PL & Umbilical Seabed Clearance Survey (Ref: 1340)

A 2 Day Clearance survey at Kingfisher PL & Umbilical using the vessel Edda Flora call sign: LAJW3 between 01st February 2022 - 31st December 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

DeepOcean AS

Edda Flora

LAJW3

N/A

01/02/2022 - 31/12/2022

For 2 Days

16

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Area 458/464 - Change of Active Dredge Zone

Tarmac Marine Ltd. and Cemex UK Marine Ltd. have applied to the MMO to amend the Active Dredge Zone in Areas 458/464 West Bassurelle in the East Channel Region.

The application is for the Active Dredge Zone in Area 464 to be removed and the Active Dredge Zone in Area 458 to be extended by an equal extent.

 

The changes are planned to come into effect after 22/02/2022.

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Snagging hazard - Near Well 3/03-12

Unidentified snagging hazard at, or close to, the location of well 3/03-12.

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Snagging Hazards - Decommissioned Murchison jacket footings - Fishing Advisory Zone

600m x 600m box covering the remaining jacket footings post-decommissioning. Area inside this region has NOT been verified by overtrawl survey.

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Seabed hazards following removal of Banff FPSO anchors & moorings

A series of deep, steep sided trenches at mooring line touchdown points and areas of disturbed seabed with clay boulders at the anchor locations, caused during recovery of the anchors. Moorings and anchors have been removed, leaving the seabed features.

10 mooring line trenches, varying in length from 70m to 180m; up to 8 metres wide and up to 9 metres deep. These trenches are steep-sided (in many cases vertical, cut into the clay seabed).

 

10 anchor scars, consisting of shallow trenches (20-90 metres long), shallow-sided depressions (less than 2 metres deep) but with areas of significantly disturbed seabed, including clay boulders up to 3 metres in size.

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Survey - Chiswick Beta (Ref: 1349)

A 1 Day Survey at Chiswick Beta using the Vessel Gardline Kommander call sign: MCJO2 between 28th January 2022 - 30th June 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Gardline Ltd

Gardline Kommander

MCJO2

N/A

28/01/2022 - 30/06/2022

For 1 Day

49

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Rig - Valaris 123

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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MetOcean Buoys - NEP Project

7 MetOcean buoys will be installed to monitor the local metocean conditions within the NEP carbon capture project area. Each location shall have a seabed frame with a navigation buoy on the surface.

The 7 units will have the following equipment:

Units 1, 3, 4, 5, 6 & 7 - Seabed Frame with attached acoutstic release mechanism & surface navigation buoy within 150m of the seabed frame

Unit 2 - Seabed Frame with attached acoutstic release mechanism & surface navigation buoy within 150m of the seabed frame. This unti will also have a second surface buoy attached to the seabed frame to measure additional information.

It is advised to give 200m clearance to these units

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NW Schooner Subsea Well - Missing Debris Cap

The Debris Cap for the NW Schooner subsea well has been identified as missing, leaving the wellhead more vulnerable to snagging on fishing nets. The Debris Cap is 4.5m x 3.9m x 1.4m and approx 3.5 tonnes, whilst the wellhead stands 6m off the seabed.

The approximate dimensions of the Debris Cap is 4.5m x 3.9m x 1.4m with a weight of approximately 3.5 tonnes. It is not known whether the Debris Cap is lying within a 500m zone of the well. A 200m x 200m area centred on the well has been searched, with no sight of it. Therefore the exact location of the Debris Cap is unknown. The loss of the Debris Cap leaves the NW Schooner wellhead more vulnerable to snagging from trawler/fishing nets. The approximate size of the tree with over trawl legs deployed is 7.8m x 7.8m x 6m high.

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Rig Move – Valaris 121 to Judy field

Chrysaor (a Harbour Energy company) plan to move the Valaris 121 Jack-up drilling rig from the Dunnottar field location to the Judy Riser Platform to perform drilling operations on the Judy 30/07a-RD development well. Throughout well operations there will be a dedicated ERRV on location monitoring the surrounding sea area.

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Exposed and Free Span - Greater Gabbard Offshore Wind Farm

Results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.

Please find attached a chart showing the results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.

 

The exposed/shallow burial areas are shown as the coloured dots on the cable route highlighted in a black box.  Equitix (Greater Gabbard OFTO) have asked that all Fishermen operate with caution when fishing anywhere on the cable route and particularly the areas that are shallow buried around KP10.’

 

Coordinates of exposed/shallow burial areas are shown on the attached chart.

 

The OFTO is updating its risk assessments to determine the extent of remedial measures that may be required. Equitix intend to provide an update on remediation after the risk assessment exercise is complete.’

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Deployment of Two Metocean Buoys, with Co-Located Guard Buoys - Dogger Bank

Partrac are to deploy two metocean buoys at two locations within the Dogger Bank South Project Area in January 2021, for a period of 6 months. The metocean buoys will be deployed alongside two guard buoys which will be co-located ~200 m NNW from the Metocean Buoys. Please maintain a 500 m clearance from the deployed equipment.

The guard buoys are yellow pillar shaped special marks, exhibiting a yellow St Andrews Cross day shape and radar reflector.  The buoys are each fitted with a yellow light, flash sequence: Fl (5) Y 20s 

 

The metocean buoys are 1.1 m diameter spherical buoys, fitted with a navigation light, flash sequence: Fl (5) Y 20s. 

 

Further details, including vessel informaiton, will follow ahead of deployment operations. 

 

 

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Rig - Valaris Gorilla V

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig Move - Maersk Inspirer

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Deployment of Spherical Directional Waverider Buoy - Northern North Sea

Shell deployed a new wave buoy in the Northern North Sea on 05-October-2021. Colour: Yellow, Size: 0.9 diameter, Fl: 5 10s

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Non recovered debris

Fishing vessel snagged on heavy object and had to release object back to sea bed

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Rig - Haven

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Shetland HVDC Link - Presence of HDD Exit Ducts at Noss Head

This notice is issued to make mariners aware of the completion of the HDD operations and the presence of three ducts protruding from the seabed at Noss Head.

The Shetland HVDC link is a critical electricity transmission link and will form part of the electrical transmission grid that is essential to the transport of renewable energy between the locations where it is generated and areas of demand, and the delivery of both Scotland’s and the United Kingdom’s 2030 climate change targets. As part of the installation schedule Horizontal Directional Drilled (HDD) exit points have been installed at Noss Head by NKT, on behalf of Scottish Hydro Electric Transmission.

 

The HDD exit points are located approximately 400m offshore in around 20m depth of water. This Notice is issued to make mariners aware of the presence of three ducts protruding from the seabed at this location.

 

Three steel pipe ducts have been installed with trajectories that emerge from the seabed around 400m offshore. The ducts have been pushed out from each of the three HDD exit points and extend up to 4m into the water column at an angle of approximately 9º to the horizontal as shown in the diagram and illustrations within the attached Notice to Mariners.

 

The HDD installation operations are now complete, and the moorings and anchors used to assist with diving operations for the HDD installation activities have been fully recovered. Therefore, the HDD exit point area is no longer identified by marker buoys.

 

It is recommended that mariners make note of the HDD duct locations and remain vigilant of the seabed protrusions until June 2022, when further installation works are scheduled.

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Anchor Listing for Safe Caledonia at Elgin PUQ

The Flotel Safe Caledonia is alongside ELGIN PUQ – within 500m zone. Providing additional accommodation for ongoing fabric maintenance campaign. Anchor Location Listing

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Safe Caledonia at Elgin PUQ

The Flotel Safe Caledonia is alongside ELGIN PUQ – within 500m zone. Providing additional accommodation for ongoing fabric maintenance campaign. Duration extended to over Winter at site and recommence work in Spring 2022 to Oct 2022

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Rig - Valaris 249

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Deployment of Floating LiDAR Buoy - Berwick Bank Wind Farm

Mariners are advised that SSE Renewables will be deploying a floating LiDAR Buoy within the proposed Berwick Bank Wind Farm array area.

The LiDAR buoy will measure the wind conditions to provide valuable meteorological data to the offshore community that is needed for offshore wind resource characterisation

 

All locations referred to are outlined in Table 1 and displayed Figure 1 within the Notice to Mariners (provided as an attachment to this notice). These locations are all within the Berwick Bank Wind Farm (BBWF) in the outer Firth of Forth on the east coast of Scotland.

 

Expected arrival on site is 5th to 22nd November 2021 with the works completed the same day, weather conditions permitting. Therefore, we would like the validity period for this Notice to Mariners to be the 01 November 2021 – 30 November 2022 to allow for any eventualities during installation operations and also to cover any ongoing O&M activities throughout the deployment period.

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Seagreen Offshore Windfarm - Foundation Grout Installation

Grout will be installed in the Wind Turbine Generator foundation suction caisson voids within the Seagreen site boundary

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install grout to the Wind Turbine Generator foundation suction caisson voids within the Seagreen Site Boundary. The vessel EDT Hercules will transport the grouting mix to site and set up at the requisite foundation location. A grout hose will be connected to the suction caisson with the grouting mixture being injected into the caisson void. A remotely operated vehicle (ROV) will also be utilised in this operation.

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Carradale - Arran North and South Subsea Cables Charting Errors

The charted locations of the Carradale to Arran subsea electricity cables in the Kilbrannan Sound may be inaccurate and are being reviewed. Any corrections required will be issued as soon as possible. Mariners should be aware that the true cable locations may be up to ~300m from the presently charted positions. The location of this hazard notice is not indicative of any true cable location and is for information only.

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Fishing Hazard - Dons Fields Decommissioning Works

The Northern Producer FPF has been removed from it’s moorings and towed to port for decommissioning but the subsea assets within the Northern Producer FPF 500m zone will remain in place on the seabed and could pose a snag hazard to fishermen

The Northern Producer FPF has been removed from it’s moorings and towed to port for decommissioning but the subsea assets within the Northern Producer FPF 500m zone will remain in place on the seabed and could pose a snag hazard to fishermen therefore the Thistle Alpha Platform ERRV will act as a guard vessel until the 500m zone clearance is performed in 2022.

 

This includes the 8 No Risers draped over the Mid Water Arch (MWA), the MWA Clumpweight Guide Frame, the Riser Base Structure (RBS) and the surface laid pipelines / Umbilicals.  The MWA will remain in the water column at a depth of 112m and will remain tethered to the seabed via the clumpweight guide frame. The risers will remain draped over the MWA with one end on the seabed and the other end will remain connected to the RBS so that they remain stable. The existing stabilisation mattresses will remain in place over the surface laid pipelines/umbilicals.

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Seagreen Offshore Wind Farm - Scour Protection Installation

Subsea Scour Protection rock installation will commence on the Seagreen Offshore Windfarm foundation structures within the site boundary.

On behalf of Seagreen Wind Energy Ltd, Seaway 7 will install seabed scour protection rock to the foundation structures within the site boundary. The Flexible Fall Pipe Vessel (FFPV) Bravenes will transport and install the rock on the seabed using its flexible fall pipe system. This allows the scour protection to be installed with a high degree of accuracy. An ROV at the end of the fall pipe will be utilised to control the flow of rock to the seabed.

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Deployment of Wave Data Buoy

Deployment of a temporary Wave Data Buoy. On behalf of Seagreen Wind Energy Ltd. Seaway 7 will deploy a temporary Wave rider buoy to assist the Heavy lift vessel Saipem 7000 to install foundations. The Waver rider buoy will stay on location until the completion of foundation installation phase.

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Seagreen Offshore Windfarm - Deployment of a Guard Vessel

Due to construction activity commencing within the Seagreen development site a guard vessel will be deployed.

In conjunction with the commencement of wind turbine generator foundation installation activities, Seaway 7 will deploy a site Guard Vessel on behalf of Seagreen Wind Energy Ltd. The vessel will be deployed on or around the 01st October and will make six hourly VHF radio broadcasts containing information regarding the Seagreen development, including installation activity, safety zone information and site demarcation buoyage information. The first guard vessel to arrive will be the Renown FR246.

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Construction work - Seagreen Offshore Windfarm

On behalf of Seagreen Wind Energy, Seaway 7 will commence installation of 114 three legged suction caisson foundation structures. The foundations will be towed from Nigg,Cromarty Firth.On arrival at site the foundations will be installed by the Heavy Lift vessel Saipem 7000.The tug Nicobar will assist the Heavy Lift vessel with barge mooring operations.Foundation grouting operations will take place from the vessel EDT Hercules. Installation is expected to commence on or around 1st October 2021.

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Wave Buoy Deployment - London Array Offshore Wind Farm

A Wave Rider Buoy will be deployed onsite from 24th September until further notice as part of ongoing monitoring of offshore conditions to support operations. Spectrum Offshore will be engaged to deploy the buoy. Description of wave rider buoy: Yellow spherical buoy, transparent top dome with solar panels and flashing light. Weight: 197kg Size: 1.10m Diameter. The buoy is connected to a subsea weight on a surface line. Vessels are requested to always maintain a 250m clearance around the buoy.

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Pentland Floating Offshore Wind SEAWATCH LiDAR Buoy

Fugro have deployed a SeaWatch LiDAR Buoy (SWLB) within the Pentland Firth, located off the north coast of Scotland. The equipment will be deployed for approximately one year and has been moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.

Fugro have deployed a SeaWatch LiDAR Buoy (SWLB); this is a sea state measurement instrument (referred to as ‘the equipment’). The deployment location is within the UK Sector of the North Sea off the north coast of Scotland.

  • The equipment was deployed on 29 August 2021, and will be deployed for approximately one year.
  • The equipment's location is provided within the attached Notice to Mariners.
  • Scheduled maintenance of the equipment is planned every six months, but unforeseen maintenance may be required.
  • The equipment has been moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.
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Survey - Devil's Hole Horst (Ref: 1290)

A 71 Days Site Survey at Devil's Hole Horst using vessel Akademik Nemchinov call sign: UETM between 1st September 2021 - 31st July 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

North Sea Natural Resources Ltd

Akademik Nemchinov

UETM

N/A

01/09/2021 - 31/07/2022

For 71 Days

27, 28

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Application for Offshore Development Area - Seagull Umbilical

Neptune E&P UK Ltd would like to request to establish an additional offshore development area in Block 22/29C for the Seagull Umbilical location.

The Seagull Field is located on UK licence P1622 Block 22/29C. 17km south of the Eastern Trough area Project (ETAP) Central Production Facility (CPF). Neptune will develop the Seagull reservoir as a subsea tie‐back to existing seabed infrastructure over the BP operated ETAP CPF. The development is high pressure and high temperature and Neptune is the Operator for the subsea development. Neptune will also drill and complete the Seagull Wells and shall retain overall Project responsibility.

The Seagull development will require installation of new subsea equipment as follows: Four Xmas Trees; a 4 slot manifold; a 17km control umbilical (including hydraulic, electrical and chemical supplies) direct from ETAP to Seagull; a 5km 10” production pipeline; a 5km 3.5” wash water pipeline from Seagull to the existing Egret manifold; and a Wye manifold adjacent to the existing Egret manifold, through which the new Seagull production pipeline will connect with the Heron cluster pipeline system connected back to the ETAP CPF. From ETAP CPF Seagull oil and gas will be exported to shore through the GAEL and FPS pipeline systems to the Kinneil Terminal onshore.

 

We already have an ODA established covering the Seagull drill centre and the Egret manifold and would like to request to extend the ODA to incorporate the entire Seagull works area. The extended Offshore development area will be required commencing from September 2021 ‐ March 2023.

 

 

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Survey - Dunnottar Exploration Well VSP (Ref: 1270)

A 1 Day Vertical Seismic Survey between 31st August 2021 and 31st August 2022.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Chrysaor Petroleum

Company U.K Limited

 

5m

31/08/2021 - 31/08/2022

For 1 Day

30

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Rig - Valaris 120

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.

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Pipeline Span - Dunbar to Alwyn: PL1043

Significant free-spans have been identified along the PL1043 Dunbar to Alwyn pipeline

Significant free-spans have been identified along the PL1043 Dunbar to Alwyn pipeline : Please exercise caution in these areas

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Plugged and Abandoned Well : Sween

Sween UKCS 3/30 : Abandoned Wellhead (3/30-7)

No overtrawlability trial done yet, rough ground may be experienced.

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Plugged and Abandoned Well : Balvenie

Balvenie UKCS 3/14: Abandoned Wellhead (3/14d-18)

No overtrawlability trial done yet, rough ground may be experienced.

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