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MCRP - MM - DOC - 0007 Morlais Scientific Activity Notification - SMRU PAM deployment



As part of the Marine Licence ORML1938 granted to Menter Môn Morlais, we are writing to you to notify you of the commencement of scientific activity where notification is required on the below date: DYDDIAD / DATE: 28/11/2022


Passive Acoustic Monitoring (PAM) - St Andrews University Sea Mammal Research Unit (SMRU) deployments in the Morlais tidal energy demonstration zone.

SMRU has installed equipment (Passive Acoustic Monitoring or PAM) on the seabed to gather acoustic data.

This document provides information on the PAM deployments for the local fishing industry and other sea users in the area.

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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:

 

Foundation Installation       

The Offshore installation vessel, HLV Seaway Strashnov, will install monopile foundations, within the Dogger Bank A construction area. The works commenced in October 2022, with a planned break in operations during Q4 2022 and Q1 2023, continuing until approximately Q3 2023. The works will be continuous 24 hours a day..

 

 A running list of the next locations to be installed and completed foundation locations will be presented in the attached Weekly Notice of Operations.

 

Balance of Plant & Asset Preservation Campaign

The Offshore Supply Vessel, VOS Start, will continue with ongoing Balance of Plant (BoP) and Asset Preservation operations and other construction support activities within Dogger Bank A construction site.

 

The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately 5th January 2023. The works will be continuous, 24 hours a day.

 

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

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Foundation Installation Campaign - Dogger Bank A



The Offshore installation vessel, HLV Seaway Strashnov, has completed the second part of the monopile foundation installation campaign. Currently the HLV Seaway Strashnov is undergoing scheduled drydock maintenance.


The works will re-commence in March 2023, continuing until approximately Q3 2023 The works will be continuous 24 hours a day. Charts of the DBA construction area and foundation locations are provided.  A running list of the next locations to be installed and completed foundation locations will be presented in the Weekly Notice of Operations.

 

During operations, the HLV Seaway Strashnovwill 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.

 

During operations, a Statutory Safety zone of 500m radius will be in place around the HLV Seaway Strashnov during the installation of foundations.  The safety zones will be monitored by a guard vessel. The primary response will be to warn passing traffic of the ongoing works and any active safety zones, and to alert any vessels where an infringement may occur or has occurred.

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Dogger Bank A,B&C UXO Inspection Campaign. Confirmed UXO Locations



UXO Inspection Operations within Dogger Bank A and Dogger Bank B Array construction areas have identified the presence of several confirmed UXO items.


These items will be addressed during a separate UXO Clearance phase of work estimated to be performed around February 2023. Until this subsequent campaign is performed it is requested that any vessel activities involving interaction with the seabed are kept to a minimum distance of 500m from the UXO items listed herein.

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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 November 2022, with start dates and anticipated durations listed against each individual location in the attached NtM. Start dates are subject to change due to weather.

 

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 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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White Cross Offshore Windfarm Floating Lidar Service Visit



Please be advised that from the 05th of December 2022, the Floating LiDAR deployed in Celtic sea to record wind and metocean data for the White Cross offshore wind farm will undergo a service visit at the offshore deployment location.


The operational period is only for 1 day.

From the 05th December up to 31st December 2022 dependent on weather conditions.

This date is subject to weather permitting, and therefore there may be the potential for an extension to the work duration.

 

The service vessel will be the Offshore Endeavour.

 

The floating lidar buoy is approximately 5m in length, 3m wide and 4.75m in height, with an anchor (dead man) weighing 2500kg. The system is comprised of the measurement buoy itself and a site-specific single catenary mooring. 

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Construction of Cable Landfall - Greenlink Internconnector Cable Installation



As part of the Greenlink Internconnector Cable Installation the cable landfall will be constructed using a Horizontal Directional Drill, during operations the vessel Pompei will be temporarily anchored close to shore to support diving operations. For safety of the divers, vessel crew and other mariners a small exclusion zone is requested around the vessel. There may be a period when the anchors are in place but the vessel is not in position.


Greenlink Interconnector Ltd. (GIL) is proposing to develop an electricity interconnector between the South-east of Ireland, from Great Island, County Wexford to South-west Wales, at Pembroke, Pembrokeshire.

To allow the offshore cable to be pulled onshore in a later stage, an onshore based Sub SubContractor (VLCV) will commence drilling operations at the Fresh Water West landfall for installation of 2 HDPE ducts. Upon completion of drilling the first borehole, an HDPE pipe is installed by means of push/pull installation.

These push/pull operations require a support vessel, which shall be positioned at the punch out location of the borehole and which shall be moored with a 6 point mooring system during operations. During the push/pull operations, divers will be deployed from the vessel and the vessel will have restricted manoeuvrability. During operations, project crew will transfer daily back and forth to the vessel by means of a CTV operated by Williams Shipping.

Before start of the offshore operations, 4 out of 6 anchors of the mooring system shall be predeployed by an anchor handling vessel on site. In Wales, Williams Shipping will perform the anchor handling operations. These anchors will stay in position until all works have been completed and final demobilisation in Wales is done  

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Survey - Llyr Offshore Wind Farm Nearshore



A geophysical and environmental survey will be carried out between 1st December and 28th February. The geophysical survey will employ Multi-beam Echo Sounder (MBES), Side-scan Sonar (SSS), High-resolution Sub-Bottom Profiler (SBP) and a single magnetometer. The environmental survey will acquire a drop down video footage and grab samples. All geophysical survey operations involve towed survey equipment (SSS, Magnetometer and SBP).


Please be advised that from the 1st of December 2022, N-SEA will be conducting geophysical and environmental surveys within the area shown in Chart 4, by the survey vessel ‘MV Coastal Observer’. Full vessel details are presented in paragraph 5 below. The survey will be carried out within the inshore section of the offshore export cable corridor starting at 3.0m physical depth and working out to -10.0m LAT.

The geophysical survey will employ Multi-beam Echo Sounder (MBES), Side-scan Sonar (SSS), a single magnetometer and Sub-bottom Profiler (SBP)[JHM5] [GL6] . All geophysical survey operations involve towed survey equipment (SSS and Magnetometer). During geophysical survey the vessel will be restricted in manoeuvrability All vessels which are operating within this area are requested to keep a 200 m distance from the MV Coastal Observer when it is restricted in its ability to manoeuvre and pass at minimum speed to reduce vessel wash.

The survey vessel will always be listening to VHF Channel 16 but can set any other channel as required. Throughout survey operations, the vessel will be displaying the appropriate lights and shapes as required under COLREGS Rule 27(b).   All mariners are reminded of their responsibilities under the International Collision Regulations and are reminded of Marine Notice No 17 of 2007 which gives general advice in relation to the activities of vessels engaged in survey work for hydrographic, seismic, fishing research and underwater operations.

All nearshore activities will be undertaken during daylight hours.

Fisheries liaison is being carried out by SeaSource Offshore, whose details are provided. If you would like further details regarding the geophysical and/or environmental surveys, please contact the Fisheries Liaison Officer using the contact details in Paragraph 6.

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Survey - Llyr Offshore Wind Farm



A geophysical and environmental survey will be carried out between 1st December and 28th February. The geophysical survey will employ Multi-beam Echo Sounder (MBES), Side-scan Sonar (SSS), High-resolution Sub-Bottom Profiler (SBP) and a single magnetometer. The environmental survey will acquire a drop down video footage and grab samples. All geophysical survey operations involve towed survey equipment (SSS, Magnetometer and SBP).


The notification is intended for circulation to all interested parties undertaking or managing activities in the vicinity of the planned survey works.

Please be advised that from the 1st of December 2022, N-SEA will be conducting geophysical and environmental surveys within the area shown in Chart 4 by the survey vessel ‘Braveheart Spirit’. Full vessel details are presented in paragraph 5 below. The survey consists of an offshore windfarm location, and its northern export cable route corridor. The geophysical survey will employ MBES, SSS, High-resolution Sub-Bottom Profiler, and a single magnetometer. The environmental survey will acquire drop down video footage and grab samples.

All environmental sampling will be executed by N-Sea subcontractor Ocean Ecology.

All geophysical survey operations involve towed survey equipment (Sidescan sonar (SSS), Magnetometer and Sub-Bottom Profiler (SBP)). During geophysical and environmental surveys when equipment is deployed the vessel will be restricted in manoeuvrability. All vessels which are operating within this area are requested to keep a 500 m distance from the Braveheart Spirit when it is restricted in its ability to manoeuvre and pass at minimum speed to reduce vessel wash. The survey vessel will always be listening to VHF Channel 16 but can set any other channel as required. Throughout survey operations, the vessel will be displaying the appropriate lights and shapes as required under COLREGS Rule 27(b). All mariners are reminded of their responsibilities under the International Collision Regulations and are reminded of Marine Notice No 17 of 2007 which gives general advice in relation to the activities of vessels engaged in survey work for hydrographic, seismic, fishing research and underwater operations.

All nearshore activities will be undertaken during daylight hours. All offshore activities will be undertaken on a 24 hour basis.

Fisheries liaison is being carried out by SeaSource Offshore, whose details are provided. If you would like further details regarding the geophysical and/or environmental surveys, please contact the N-Sea project manager using the contact details in Paragraph 6.

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Survey - Norfolk Offshore Wind Farm



Please be advised that Fugro will be undertaking a geophysical and geotechnical site survey on behalf of Vattenfall Wind Power over the Norfolk future wind farms in the North Sea.


The M/V Normand Mermaid will be deployed over the survey area (Norfolk Boreas) starting on or around the 22.11.2022 for approximatelly two weeks.The M/V Fugro Quest will be deployed over the survey area (Norfolk Boreas) starting on or around the 17.12.2022 for approximatelly seven weeks. Vessels shall work on geotechnical investigation locations where they will remain stationary for period of 2-24 hours.

 

The M/V Fugro Pioneer and the M/V Fugro Frontier will be deployed over the survey area (OSS locations and the Norfolk Boreas area) starting on or around the 25.10.2022 for up to eight weeks. Vessels will be towing sparker sources and streamers at low speed. One nautical mile of CPA (Closest Point of Approach) is requested from each of these two vessels.

 

 

Contact Details – Fisheries Liaison

For fishery queries please contact:

Jonathan Keer; jonathan@brownmay.com; 07850 604851

Freya Sandison; freya@brownmay.com; 07857 500609

 

Contact Details – Vattenfall

Further enquiries should be addressed to:

Mikkel Klahn; mikkel.klahn@vattenfall.com

Rory Anderson; rory.anderson@vattenfall.com

Matina-Christina Sougle - matina-christina.sougle@vattenfall.com

Emma Merryfield - emma.merryfield@vattenfall.com

 

 

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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:

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
Seacat Courageous Crew Transfer Vessel 2IDC9 235108711 9758052 Grimsby 01/05/2022
Windcat 18 Crew Transfer Vessel 2CKP3 235073592 915762 Grimsby 07/11/2022

 

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)

NtM 016-2022 (18th May 2022)

NtM 017-2022 (08th June 2022)

NtM 018-2022 (22nd June 2022)

NtM 019-2022 (30th June 2022)

NtM 020-2022 (11th July 2022)

NtM 021-2022 (11th July 2022)

NtM 022-2022 (03rd August 2022)

NtM 023-2022 (15th August 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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Surface Laid Cable - The Whitley Bay Stub Route (2)



The installation of the Havhingsten fibre optic telecommunication Whitley Bay Stub Route has been completed. Due to challenging soil conditions and rocky seabed, there are sections of surface laid cable and areas with shallow burial. No further operations to bury this section of cable are planned due to the presence of rock. The cable is protected by the armoured cable type and from the BMH up to kilometre point (KP) 0.474 the cable is additionally protected by Articulated Pipe.


Please be advised that installation of the Havhingsten fibre optic telecommunication Whitley Bay Stub Route has been completed.

 

The supplier of the Havhingsten cable is Alcatel Submarine Networks (ASN). Intertek are the environmental and permitting consultants.

 

The Whitley Bay Stub Route has been installed between the Beach Man Hole (BMH) and the territorial sea limit but it will not yet be connected to the telecommunication network. This cable is to provide infrastructure for the network to expand relatively easily when demand is required within the next 10 - 15 years.

 

Due to challenging soil conditions and rocky seabed, there are sections of surface laid cable and areas with shallow burial (less than 0.20m burial depth), coordinates can be found below. No further operations to bury these sections of cable are planned due to the challenging soil conditions. The cable is protected by the armoured cable type and from the BMH up to kilometre point (KP) 0.474 the cable is additionally protected by Articulated Pipe.

 

Coordinates for the surface laid cable and shallow burial areas are provided in the attached Notice to Mariners.

 

Post-Lay Inspection & Burial (PLIB) by jetting for the section of surface laid cable close to the territorial sea limit was completed on the 1 November 2022.

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Surface Laid Cable - The Whitley Bay Stub Route (1)



The installation of the Havhingsten fibre optic telecommunication Whitley Bay Stub Route has been completed. Due to challenging soil conditions and rocky seabed, there are sections of surface laid cable and areas with shallow burial. No further operations to bury this section of cable are planned due to the presence of rock. The cable is protected by the armoured cable type and from the BMH up to kilometre point (KP) 0.474 the cable is additionally protected by Articulated Pipe.


Please be advised that installation of the Havhingsten fibre optic telecommunication Whitley Bay Stub Route has been completed.

 

The supplier of the Havhingsten cable is Alcatel Submarine Networks (ASN). Intertek are the environmental and permitting consultants.

 

The Whitley Bay Stub Route has been installed between the Beach Man Hole (BMH) and the territorial sea limit but it will not yet be connected to the telecommunication network. This cable is to provide infrastructure for the network to expand relatively easily when demand is required within the next 10 - 15 years.

 

Due to challenging soil conditions and rocky seabed, there are sections of surface laid cable and areas with shallow burial (less than 0.20m burial depth), coordinates can be found below. No further operations to bury these sections of cable are planned due to the challenging soil conditions. The cable is protected by the armoured cable type and from the BMH up to kilometre point (KP) 0.474 the cable is additionally protected by Articulated Pipe.

 

Coordinates for the surface laid cable and shallow burial areas are provided in the attached Notice to Mariners.

 

Post-Lay Inspection & Burial (PLIB) by jetting for the section of surface laid cable close to the territorial sea limit was completed on the 1 November 2022.

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Uncrewed Surface Vessel (USV) Operation



Operation of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of Macduff during November/December 2022. The vessels will be engaged in survey activities off the coast of Macduff/Fraserburgh. Up to 4 USV’s will be operational at any one time.


Activity: Operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of the ports of Macduff during late November and December 2022. Up to 4 USVs will be operational at any one time surveying within the corridor outlined in Figure1.

 

A support vessel will escort the USVs from the active port to clear water. Launch and recovery will be from the port of Macduff.

 

Although the vessels are uncrewed, they are throughout the 24 hour operation, piloted remotely using 360 degree cameras and other navigational aids. 

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.

 

Dates: Operations will take place subject to weather and other operational factors from 30th November 2022 for ~4 weeks.

 

Notes: Seafarers are asked to avoid contact with the vessel and be aware of the operational area during this period.  

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Metocean Survey - West of Orkney Offshore Windfarm



The survey will commence on the 14 October 2022 and run through to 31 October 2023 using the vessel Green Isle and C-Force. The total duration for survey activity is expected to take 375 days, and additional days have been included in the duration to account for unforeseen operational and/or weather delays.


Contact details:

  • Onshore FLO: phone: +44 (0) 7926418820, email: OWPLFisheries@xodusgroup.com;
  • Offshore: T: +44(0)1856 851966 (office) M: +44(0)771 056 2605 (mobile)

 

  • Name of vessel carrying out the work and equipment used: Green Isle
  • Two floating Light Detection and Ranging (LiDAR) Systems (FLS);
  • One Wave Buoy; and
  • One Acoustic Doppler Current Profiler (ADCP).
  • Port of operation: Stromness, Scotland
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Deployment of Floating LiDAR Buoy and Subsea Metocean Mooring



On behalf of Floating Energy Allyance, Partrac Ltd. has deployed a Floating LiDAR Buoy and Subsea Metocean Mooring within the Buchan Offshore Wind Project site, located off the East coast of Scotland. The deployment was carried out on 28th November 2022, using the vessel Isle of Jura. The metocean equipment will be deployed for 2 years (24 months), and maintenance visits will be undertaken every 3 months.


FLOATING LIDAR BUOY: The floating LiDAR buoy records meteorological data. It is anchored to the seabed by means of a mooring chain and a ground weight. The buoy has dimensions of 4m x 4m, and when deployed the tallest mast on the buoy sits approx. 4m above the water line (Figure 2). The lantern has a flash sequence Fl (5) Y 20s.

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Site Investigations – OEC Survey



This notice to mariners is to inform that Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out survey investigations from a vessel at the Moray West Offshore Wind Farm Export Cable Corridor. The Moray West site is located on the Smith Bank in the Outer Moray Firth, approximately 22.5km from the Caithness coastline. The offshore wind farm site covers an area of approximately 225km2.


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Notice to Mariners: Ullapool to Altnaharrie Cable Installation, Loch Broom



Please be advised that Briggs Marine Contractors (BMC) have been contracted by Scottish and Southern Electricity Networks (SSEN) to be a framework holder for subsea power cable repair and replacement. As part of this framework, BMC has been awarded the installation of a new 33kv subsea power cable between Ullapool and Altnaharrie.


Please be advised that Briggs Marine Contractors (BMC) have been contracted by Scottish and Southern Electricity Networks (SSEN) to be a framework holder for subsea power cable repair and replacement. As part of this framework, BMC has been awarded the installation of a new 33kv subsea power cable between Ullapool and Altnaharrie.

 

Vessel Operations The work utilises cable ship Elektron for cable installation operations along the specified route.

 

Multicat Dive Support Vessel (DSV) Forth Jouster will carry out PLGR, Pre and Post lay ROV (Remotely Operated Vehicle) surveys and will also be conducting diving operations within the cable corridor.

Elektron will then be assisted at the shore ends by Celtic Guardian, Celtic Trader, Celtic Mara and Celtic Nomad, regularly passing inside the working corridor for crew transfers and supporting nearshore cable landing operations.

Operations are expected to commence after the 28th November, and are expected to continue over a period of 21 days, weather permitting. Fishing gear clearance within the licenced installation corridor is kindly requested for the duration of the works.

 

Work Description

During operations the vessels Elektron and Jouster will be restricted in ability to manoeuvre. Whilst operations will seek to minimise disruption on the width of the main navigation channel, some disruption may be unavoidable during operations within the working corridor.

Cable laying and ROV operations may be conducted on a 24-hour basis.

Should any vessel wish to come within 500m of the vessels, then direct communication with the Master / Operator is required.

The vessels will display the appropriate lights / day shapes for their operations.

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



Partrac are to service and redeploy two metocean monitoring buoys near co-located guard buoys at two separate locations within the Dogger Bank South Project Area, approximately 65 miles and 80 miles east of Whitby, UK. Servicing operations are estimated to be carried out over three days from 29th November to the 1st of December 2022, weather permitting. 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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Notice to Mariners - Shetland HVDC Link (Ship to Ship Rock Transfer)



Rock placement is being undertaken by NKT, on behalf of Scottish Hydro Electric Transmission Plc, along the Shetland HVDC Link for Campaign 1 using the rock placement vessel Heimdal R. Due to the maximum load capacity of Heimdal R, transfer of rock is required to be undertaken by ship-to-ship transfer within Sinclair’s Bay, Caithness.


Rock placement is currently being completed by Heimdal R along the Shetland HVDC Link Campaign 1, with an estimated completion date of the 22.12.22. During this time coaster vessels, Famita and Hagland Carrier, will transport rock from Norway to Sinclair’s Bay to complete the ship-to-ship transfer of rock to Heimdal R. All ship-to-ship transfers will be completed in safe sea conditions and in high visibility.

 

A safe and suitable location, free from any potential hazards, within the pre-designated ship-to-ship transfer areas (see chart on the last page of the document) will be chosen on arrival of the coaster vessel within Sinclair’s Bay. Once a suitable location has been chosen, Heimdal R will confirm permission to moor alongside the coaster vessel safely and securely. The coaster vessel will then transfer the rock to Heimdal R using the excavator onboard.

 

Please be aware that during this operation, vessels, Famita, Hagland Carrier and Heimdal R, will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972). Masters of vessels are therefore requested to maintain their vessels at a minimum safe passing distance of 500 metres.

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Floating LiDAR buoys & metocean buoys - MarramWind



Mariners are advised that from the 10 September 2022, for a period of 13 months, two Floating LiDAR buoys and one Seawatch Midi metocean buoy with an Acoustic Doppler Current Profiler (ADCP) seabed mooring will be deployed within the MarramWind offshore wind farm array. Please maintain a 400 m clearance from the deployed equipment. Deployments will be carried out over 3 days from 10 September 2022; weather permitting. Operations will be completed by the Fishing vessel ‘Elizabeth’.


From the 10 September 2022, for a period of 13 months, two Floating LiDAR buoys and one Seawatch Midi metocean buoy with an Acoustic Doppler Current Profiler (ADCP) seabed mooring will be deployed within the MarramWind offshore wind farm array to record wind and metocean data.

All locations referred to are outlined in Table 1 and displayed in Figure 1 within the Notice to Mariners (provided as an attachment to this notice). These locations are all within the MarramWind offshore wind farm off the east coast of Scotland.

 

The Seawatch Midi metocean buoy and the FLiDAR buoys are yellow in colour and will exhibit a navigation light according to IALA standards: five (5) flashes at one (1) Hertz, every twenty (20) seconds (Fl (5) Y 20s). The ranges for the lights on the buoys are 5 nautical miles for both Seawatch Midi and the FLiDAR Buoys. All vessels are requested to maintain a safe distance (400m) from the deployed equipment at all times.

 

Further details can be found within the attached Notice to Mariners.

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Scottish Hydro Electric Power Distribution (SHEPD) ED1 Subsea Cable Installations



Please be advised that Briggs Marine Contractors (on behalf of SHEPD) shall be undertaking subsea trenching operations along sections of the following cable routes: • Carradale to Arran • Mull to Coll


Please be advised that Briggs Marine Contractors (on behalf of SHEPD) shall be undertaking subsea trenching operations along sections of the following cable routes:

• Carradale to Arran

• Mull to Coll

 

Mariners should be aware that due to ground conditions burial operations will target areas where sufficient sediment is present. Upon completion of the works large sections of the subsea cable will remain exposed at various locations on the seabed where sediment depths have not been sufficient for burial operations to take place.

 

Vessel Operations The work utilises DP2 vessel Horizon Enabler for the ROV jet trenching.

 

As-built surveys will be carried out by Celtic Guardian and Horizon Enabler.

 

Guard vessels Spes Bona V and Deliverance will be stationed nearby prior to the burial operations.

 

Operations are now expected to commence 2nd December 2022 for a period of two weeks, weather dependent.

 

Work Description During operations the vessels Grand Canyon will be restricted in ability to manoeuvre. Whilst operations will seek to minimise disruption on the width of the main navigation channel, some disruption may be unavoidable during operations within the working corridor.

 

Cable trenching, ROV and survey operations may be conducted on a 24-hour basis.

 

Should any vessel wish to come within 500m of the vessels, then direct communication with either the Master / Operator or the guard vessel stationed nearby is required.

 

The vessels will display the appropriate lights / day shapes for their operations.

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Major component repairs at Moray East Wind Farm



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence major component repair activities on a number of Wind Turbine Generators (WTGs).


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence major component repair activities on a number of Wind Turbine Generators (WTGs). The list of potential WTGs where works may take place are listed in Table 1 (attached)  and illustrated in Figure 1 (attached). These activities will be undertaken using the Jack-up vessel (Vole Au Vent), expected during the period between 25 November 2022 and 7 February 2023.

 

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Geophysical Surveys on Selected WTG Locations



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to undertake geophysical surveys around six Wind Turbine Generator (WTG) locations. The geophysical survey is to be conducted at each proposed WTG location covering an area of 270m x 270m cantered on the respective WTG. The survey vessel to be used is the Waterfall, detailed below. Activities are expected to take place between 27/11/2022 and 24/12/2022.


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to undertake geophysical surveys around six Wind Turbine Generator (WTG) locations. The geophysical survey is to be conducted at each proposed WTG location (as listed in Table 1) covering an area of 270m x 270m cantered on the respective WTG. The survey vessel to be used is the Waterfall, detailed below. Activities are expected to take place between 27/11/2022 and 24/12/2022.

Table 1: WTG where geophysical surveys will be undertaken

 

WTG ID

Coordinates

Latitude (DD MM.mmm)

Longitude (DD MM.mmm)

ME-C12

58° 11.218' N

2° 48.964' W

ME-J08

58° 8.698' N

2° 37.937' W

ME-D12

58° 11.207' N

2° 47.385' W

ME-G22

58° 17.252' N

2° 42.599' W

ME-G20

58° 16.036' N

2° 42.609' W

ME-B03

58° 5.755' N

2° 50.567' W

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Metocean Equipment Deployments at 3 sites within the SSE Ossian OWF - Service Visit



Partrac deployed the following array of metocean equipment at 3 sites within the Ossian floating offshore wind farm off the East coast of Scotland in August 2022: + Floating LiDAR buoy at sites 1 & 3 + Guard buoy at site 2 + Datawell Waverider buoy at sites 1,2 & 3 + Subsea mooring at sites 1,2 & 3 Partrac is planning to service the subsea moorings in the 2 week period from 19/11/22 using the vessel Isle of Jura. The works are estimated to be carried out over two days, weather permitting.


FLOATING LIDAR BUOY The floating LiDAR buoys deployed at sites 1 and 3 records meteorological data and are anchored to the seabed by means of a mooring chain and a ground weight. The buoy has dimensions of 4m x 4m, and when deployed the tallest mast on the buoy sits approx. 4m above the water line. The lantern will have a flash sequence Fl (5) Y 20s. Please maintain a 500m exclusion around each buoy.

 

WAVEBUOY

The wavebuoy deployed at each site is a 1.1 m diameter yellow spherical buoy fitted with a flashing antenna with sequence Fl (5) Y 20s.

 

GUARD BUOY

The guard buoy deployed at site 2 comprises a yellow St Andrews Cross, radar reflector, and yellow navigation light. The light will have a flash sequence Fl (5) Y 20s.

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Geophysical survey works - Seaham



Geophysical survey works by vessel south of Seaham Harbour.


The surveys are being undertaken for the purposes of geophysical investigations at the 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.

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Shetland HVDC - Wet stored cable



Scottish Hydro Electric Transmission Plc, are installing the Shetland HVDC Link cable. As part of Campaign 1 installation activity, there is currently in place, a section of wet stored cable that is sensitive to any external impacts and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.


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

 

Fishing gear or other equipment with seabed intervention should not be deployed within the wet stored cable area from KP148.9 to KP156.3. Please see coordinates and chart attached.

 

Within the area KP148.9 to KP156.3 approx. 700m of the wet stored cable has a shallow burial depth of <40cm and a section of surface laid cable, a submerged buoy is attached to the end of the wet stored cable to aid retrieval of the cable. The wet stored cable will remain in place until completion of installation Campaign 3, expected in July 2023.

 

 

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Morgan & Mona Metocean Equipment Removal and Floating LiDAR Servicing



Metocean instrumentation within the Morgan and Mona project sites are scheduled for removal. And Floating LiDAR in the same area are scheduled to be serviced.


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. Recovery of this instrumentation is now scheduled, having been deployed for 12 months.

 

Until metocean equipment is recovered, it should be noted that instrumentation is deployed on the seabed some distance from the surface buoy; 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 floating LiDAR instrumentation were successfully deployed at the Mona Project site and the Morgan project site in March 2022. A scheduled service of this instrumentation will take place as soon as weather and vessel availability permit. These servicing operations will adopt one of two approaches: (1) a replacement floating LiDAR system will be deployed within the licenced area and the existing system and mooring recovered or (2) the existing system will be recovered to the vessel and the mooring buoyed and left in situ while on shore servicing occurs.

 

It should be noted that instrumentation is deployed on the seabed some distance from the surface floating LiDAR 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.

 

All equipment will be maintained in position via appropriate mooring systems and will gather metocean data to inform the proposed Project.

 

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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Floating Lidar Metocean Buoy Service - NOAH Met Mast, Blyth



Partrac can confirm that a Floating LiDAR FLS200 buoy (E13) has been serviced and redeployed in close proximity to the NOAH Met Mast, 3nm off the coast of Blyth. The E13 LiDAR buoy is expected to be deployed next to the mast for approx. one month, and a further Notice to Mariners will issued prior to recovery. Whilst deployed, please maintain a 500m exclusion around the buoy.


METOCEAN BUOY

 

The metocean buoy records meteorological data and is anchored to the seabed by means of a mooring chain and a ground weight. The buoy has dimensions of 4m x 4m, and when deployed the tallest mast on the buoy sits approx. 4m above the water line.

 

The surface buoys will include: A day shape of yellow St Andrews Cross; radar reflector; and yellow navigation light.  The light will have a flash sequence 5Fl(20s).

 

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Seabed instrumentation frame deployments - South Stack Irish Sea



A seabed instrumentation frame with associated ground line and clump weight is deployed and will be recovered in a suitable weather / tidal window. The 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. Note: two frames were deployed initially, but one of these has been recovered already.


Inside the Morlais demonstration zone the frame sits on the seabed in more than 30m of water, 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 position listed here is as deployed.

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Dogger Bank A Balance of Plant & Asset Preservation Campaign



The Offshore Supply Vessel, VOS Start, will carry out Balance of Plant (BoP) and Asset Preservation operations within Dogger Bank A construction site.


The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately 5th January 2023. The works will be continuous, 24 hours a day. Charts of the DBA Array area are provided below.

 

The operations will include visual inspections and remedial maintenance at installed WTG foundation locations.

 

During operations, the VOS Start 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 500m 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 area.

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Establishment of AIS AtoN at Moray East Met Mast Caisson



Please be advised that an Automatic Identification System (AIS) Aid to Navigation (AtoN) has been established to indicate the Moray East Met Mast Caisson.


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UXO geophysical surveys within the EA HUB Offshore Wind Farm area



Scottish Power Renewables UXO geophysical surveys within the EA HUB OWF area. Scottish Power Renewables (SPR) has contracted Fugro GM Marine Limited (Fugro) to carry out UXO surveys located on their site east of Lowestoft, United Kingdom, in the southern North Sea and covers an area of approximately 5,900 km2 for the East Anglia HUB offshore windfarm.


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Shetland HVDC Cable Lay Works Campaign 1



Scottish Hydro Electric Transmission Plc, are undertaking Campaign 1 of the Shetland HVDC Link cable installation. Campaign 1 begins at Noss Head, North of Wick and runs to until approximately KP155. The cable has successfully been laid on the seabed floor. The trenching vessel, Grand Canyon III, has also completed trenching the cable to the required burial depth. For sections that cannot be trenched, rock placement will be undertaken by vessels Heimdal R and Rockpiper in the near-shore area.


Activity Update

 

The cable has successfully been laid on the seabed floor by the vessel NKT Victoria. Trenching of the cable to the required burial depth in the seabed has been completed by the Grand Canyon III. For the sections remaining along the cable route that have not been trenched, rock placement will be undertaken to achieve the required protection. The rock placement works will be completed in the near-shore area (Campaign 1A) by vessels Heimdal R and Rockpiper. All works will be continuous, 24 hours a day.

 

Within the Noss Head Marine Protected Area the cable has been surface laid and protected by a cable protection system. 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. For this reason, the cable corridor will remain closed for any fishing that interacts with the seabed, anchoring or use of other equipment with seabed intervention.

 

Please be aware that vessels Heimdal R and Rockpiper will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972). Masters of vessels are therefore requested to maintain their vessels at a minimum safe passing distance of 500 metres.

 

Heimdal R and Rockpiper will display the appropriate shapes and lights in accordance with COLREGs Rules 16 and 18.

 

Co-ordinates of the cable corridor and charts of the working area are provided below. 

 

Guard Vessels

 

To protect the cable during installation activities Guard Vessels will be placed at approximately 15km intervals along the cable route. To provide the required coverage, approximately 7 guard vessels are expected to be utilised. The primary purpose of the Guard Vessels is to guard any unprotected cable along the cable route. The Guard Vessels will operate on a 24hr / 7 day per week basis. Any exchange of vessels shall be on site and coordinated so the unprotected cable is never unguarded.

 

It is requested that all vessels maintain a minimum of 500m safe distance from the installation vessels and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the cable corridor.

 

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Seabed Activity Bluemull Sound (Shetland) – Subsea Tidal Array



The purpose of the operation is to conduct work on a subsea tidal energy array in the Bluemull Sound, Shetland.


A multicat vessel the Leask Marine C-Odyssey, call sign 2ETW7, will conduct offshore and subsea operations. Works will include loading and preparatory work at Cullivoe Harbour and Belmont Pier. Operations could take place during the day or at night.   Operations will be conducted within the works area bounded by points A/B/C/D below (vessels should keep well clear e.g. 100m) and up to 50m either side of the cable corridor route. Two 10m high yellow substructures are temporarily stored just offshore of the new Cullivoe Marina breakwater in 5-7m water depth, each marked with a single Fl Y 5s (one yellow flash every 5 seconds) light. See coordinates below. This notice will be updated once these substructures are removed. 

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Morven Offshore Wind Farm Floating LiDAR and Metocean Survey



Metocean instrumentation and a floating LiDAR system (FLS) are planned for deployment within the boundary of the proposed Morven Offshore Wind Farm Project site in the North Sea. All instrumentation is planned for deployment within the Morven Project site in September 2022 until further notice.


Instrumentation was succesfully deployed on 19th October 2022 at the Morven Project site. A total of 2 metocean instrumentation moorings and one FLS mooring were deployed at each of two deployment locations within the Project site (known as Morven North and Morven South).

 

The metocean moorings comprise of one directional waverider buoy (DWR) which will is visible on the water surface, moored to the seabed through a combination of rope and rubber cords. The second metocean mooring is a subsurface ‘stumpy’ mooring which will not be visible at the water surface but will float approximately 5 m above the seabed. The FLS mooring comprises of a surface visible buoy moored to the seabed through a combination of rope and chain via a single point mooring.

 

Marine users are requested to maintain the safe clearance distances of 500m.

 

All equipment will be maintained in position via appropriate mooring systems and will gather metocean data to inform the proposed Project. Details of the surface present devices and relevant aids to navigation are provided in the attached NtM. 

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SSER Berwick Bank Offshore Windfarm - Geotech Survey - Interim 2B



Mariners are advised that SSE Renewables will be returning to Berwick Bank Wind Farm area to undertake further Geotechnical survey work. The survey will be within the proposed Berwick Bank Wind Farm site boundary.


SSE Renewables are not expecting fishermen to relocate gear - on this occasion the vessel(s) will work around any gear on location. A scouting/guard vessel will operate ahead of the survey vessel to ensure that this can be achieved.

 

The survey work is being undertaken by Fugro and will be conducted from the vessel Fugro Scout. The geotechnical survey is due to start in October 2022. The scouting/guard vessel will be the Artemis.

 

The scope of work within the main array area will comprise up to 35 composite rotary boreholes advanced as a combination of sampling in sand and clay and CPT downhole pushes through suitable soils and then extended by rotary core drilling to depths up to 40 m below seabed.

 

During the campaign, the survey vessel will be deploying underwater equipment to obtain cores and assess the geology in the area. As a consequence of equipment being deployed and the modes of operation, all mariners are advised to keep a safe clearance distance of no less than 500 m from the vessel(s). No towed equipment will be used.

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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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MetOcean Buoy Installation



Installation a floating LiDAR buoy and a Waverider buoy for met ocean data gathering. It is planned to install a floating LiDAR buoy and a Waverider buoy for met ocean data gathering. The port of mobilisation is Dundee and the installation will take place using a Multi-cat type vessel.


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Areas of Exposure & Suspension - Carradale to Arran North Subsea Cable



Mariners should be aware that the Carradale to Arran North cable has areas of exposure and suspension.


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Carradale - Arran South Subsea Power Cable areas of exposure



Mariners should be aware that the Carradale - Arran South subsea power cable has areas of exposure and suspension.


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Floating LiDAR buoys & metocean buoys - CampionWind



Mariners are advised that from the 10 September 2022, for a period of 13 months, two Floating LiDAR buoys and one Seawatch Midi metocean buoy with an Acoustic Doppler Current Profiler (ADCP) seabed mooring will be deployed within the CampionWind offshore wind farm array. Please maintain a 400 m clearance from the deployed equipment. Deployments will be carried out over 3 days from 10 September 2022; weather permitting. Operations will be completed by the Fishing vessel ‘Elizabeth’.


From the 10 September 2022, for a period of 13 months, two Floating LiDAR buoys and one Seawatch Midi metocean buoy with an Acoustic Doppler Current Profiler (ADCP) seabed mooring will be deployed within the CampionWind offshore wind farm array to record wind and metocean data.

All locations referred to are outlined in Table 1 and displayed in Figure 1 within the Notice to Mariners (provided as an attachment to this notice). These locations are all within the CampionWind offshore wind farm off the east coast of Scotland.

 

The Seawatch Midi metocean buoy and the FLiDAR buoys are yellow in colour and will exhibit a navigation light according to IALA standards: five (5) flashes at one (1) Hertz, every twenty (20) seconds (Fl (5) Y 20s). The ranges for the lights on the buoys are 5 nautical miles for both Seawatch Midi and the FLiDAR Buoys. All vessels are requested to maintain a safe distance (400m) from the deployed equipment at all times.

 

Further details can be found within the attached Notice to Mariners.

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White Cross - Floating LiDAR system deployment



Please be advised that from the 09th of July 2022, one Floating LiDAR system is to be deployed to the Celtic sea to record wind and metocean data.


Please be advised that from the 09th of July 2022, one Floating LiDAR system is to be deployed to the Celtic sea to record wind and metocean dataPosition and coordinates where the FliDAR buoy will be deployed are provided in the table and charts below. The buoy will be deployed from Padstow harbour. The buoys will be in situ for 12 months (but up to 24 months).

 

The FLiDAR equipment will undergo regular scheduled maintenance during the operation period estimated to be 4 times a year, further notice to mariners will be issued confirming the dates and maintenance activities.

 

Following system checks onshore, the buoys will be either towed into position by a small works vessel or be deployed from a vessel through lifting of the buoys from the deck into the water. Key stages of the deployment are listed below:

1. unit delivered by road and assembled ashore;

2. unit, concrete sinker and mooring system loaded onto multipurpose vessel and taken to site;

3. concrete sinker and mooring system deployed from the vessel; and

4. unit deployed from the vessel and then attached to the mooring system.

 

Floating LiDAR Description

The floating lidar buoy is approximately 5m in length, 3m wide and 4.75m in height, with an anchor (dead man) weighing 2500kg. The system is comprised of the measurement buoy itself and a site-specific single catenary mooring.

 

Liaison and General Operational Principles

  1. The survey contractor will ensure advance notice of the installation works is provided to all marine users and the location of the buoy once installed is provided.
  2. Where considered appropriate, a Fisheries Liaison Officer will be used to provide advice during installation of the buoy and during the full deployment period of 12 months. Name: Rhys Kibble         Email:  rhys.kibble@brownmay.com          Telephone: +44 (0) 7809 337 349  

Programme

Deployment Date

From the 9th July up to 23rd July 2022 dependent on weather conditions

This date is subject to weather permitting, and therefore there may be the potential for an extension to the work duration.

Operational period

1 Year (up to 2 years from)

 

 

Safety

Lighting System

Colour: Yellow

Location: Top side of the FLS

Height of light above water: 3 metres

Flashing Intervals ODAS FI(5) 20s (range 5 nautical miles)

 

24 Hour Emergency Contact Numbers:

AKROCEAN

Mathieu DADEN +33 (0) 6 78 03 72 15

Control room VALEMO +33 (0)5 47 30 20 60

 

EMERGENCY

112 / 999 ask for the Coast Guard

VHF Channel 16

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Wet Stowed Export Cable



Export cable 3 has been wet stowed on the seabed in close proximity to the Seagreen offshore sub-station platform. On behalf of Seagreen Wind Energy Ltd, Nexans AS have wet stowed the end of export cable 3 on the seabed within the export cable corridor in the vicinity of the Seagreen offshore sub-station platform. The export cable installation vessel Nexans Aurora has laid down the cable at the coordinates shown below


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Wave Data Buoy Installation



A wave data buoy has been installed to assist foundation activity within the Seagreen Offshore Windfarm site. The wave data buoy will display the following characteristics - Fl(5)Y 20s 4M


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Dogger Bank A Export Cable Reduction to Charted Depth



During the campaign to lay and bury the Dogger Bank A export cable, it has been necessary to install rock berm protection over the cable in locations where it has not been possible to trench bury the cable


In the section of cable shown in Figure 1 of the attached NtM, the rock berm installation has been installed to a maximum height of approximately 0.6m above seabed level. In these locations, this represents a reduction in depth at Lowest Astronomical Tide (LAT) of approximately 5%.

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Shetland HVDC - Clump Weights



Scottish Hydro Electric Transmission Plc, have carried out a pre-lay grapnel run (PLGR) and Route Clearance (RC) of Out of Service (OOS) Cable crossings along the Shetland HVDC Link. The works are now complete and items detailed have been deposited permanently on the sea bed.


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.

 

The OOS cables were removed along the route and, in accordance with International Cable Protection Committee procedures, all cable ends left on the seabed were weighed to seabed by the means of clump weights. The clump weights are concrete discs that are 0.5m diameter and 0.2m thick. A total of 10 clump weights have been deployed and remain at their location indefinitely. They do not pose a risk to mariners; this Notice is being distributed for information purposes only. 

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Geophysical and Unexploded Ordnance Survey



Seaway 7 will conduct a geophysical/unexploded ordnance survey within the boundaries of the Seagreen Offshore Wind Farm. On behalf of Seagreen Wind Energy Ltd. Seaway 7 will commence a geophysical/unexploded ordnance survey on four spare asset locations within the boundary of the Seagreen site. The survey vessel Mersey Guardian is expected to arrive at site on or around the 25th of June to commence calibrations and survey operations.


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Temporary marker buoy - Export cable ducts of the Dogger Bank A and Dogger Bank B export cables



This notice to mariners (NtM) relates to the location of a temporary marker buoy positioned between the export cable ducts of the DB A and DBB export cables


This revised notice to mariners (NtM) relates to the location of a temporary marker buoy positioned between the DBA and B export cable ducts.

 

The Nearshore works for DBA export cable have now been completed, with the cables and cable ducts now fully buried. The temporary marker buoy has now been moved back to a position between the DBA and DBB duct exit points. The buoy will remain in this position until the nearshore works for DBB commence in 2023.

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 Rev03, issued on the 19th December 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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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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Shallow Burial - Amitie Cable System



Alcatel Submarine Networks UK Ltd (ASN) was contracted to carry out construction activities for the AMITIÉ cable system. The AMITIÉ cable system spans nearly 6,600 km in total with the UK landing point in Widemouth Bay, near Bude, Cornwall. Shallow burial areas and short sections of surface laid/exposed cable in UK territorial waters. The areas of shallow burial and surface laid cable are due to hard ground or rock, where cable burial to the target depth was not possible.


The construction activities in the area shown were completed nearshore on 7th July 2021 using the vessel “Viking Energy”, and offshore on 24th August 2021 using the vessel “Ile de Brehat”. Post-lay inspection and burial (PLIB) works were completed on 29th November 2021 using the vessel “Ile d’Aix”.


This notice is issued to inform of as-laid shallow burial areas and short sections of surface laid/exposed cable in UK territorial waters. The areas of shallow burial and surface laid cable are due to hard ground or rock, where cable burial to the target depth was not possible. No further burial or protection works are planned for the AMITIÉ cable at this time.


It is requested that all vessels operating in this area keep their distance and avoid any works near the cable position. In view of the serious consequences resulting from damage to submarine cables, vessel operators should take special care when anchoring, fishing, mining, dredging, or engaging in underwater operations near areas where these cables may exist or have been reported to exist. In order to minimize the risk of such damage as much as possible, vessels should avoid any such activity at a minimum distance of 0.25 nautical mile, on either side of submarine cables.
 

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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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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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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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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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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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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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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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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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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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