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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 October 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 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.

The survey area is on the UK Northeast Coast, Teesside is approx. 1500m x 500m

The survey area is on the UK Northeast Coast, Humberside is approx. 800m x 400m

See detailed map on our bulletin website

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

See detailed map on our bulletin website

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to undertake geophysical surveys along inter-array cables within the Moray East Wind Farm Site and export cables along the cable corridor (OfTI boundary) (see Figure 1). These activities will be undertaken using the Green Storm survey vessel. The survey will take place from the 27th to 30th of September 2022 at the export cable, and from the 15th September to 10th October 2022 for the interarray cable within the wind farm, subject to weather conditions.

The earliest possible date for the rig move is late September extending to the end of October to account for the planned rig move window and possible delays en route.

Geophysical surveys shall be conducted at the below locations, operations limited to Multibeam Echosounder, side scan sonar, magnetometer and sub bottom profiling.

All ops shall be executed primarily within established 500m exclusion zones, working areas of 7km x7km to allow for run-in/out and turning have been detailed below. Operations at each location are antiicpated to take a max of 24hrs subject weather delays.

Operations are scheduled to commence between 15th & 30th October.  Campiagn duration schedule is ~10 days.

Shefa-2 Segment 7 cable break has been repaired and FS deployed on seabead (WD 245m) 30th September. But due to extreme weather conditions the PLIB operation was postponed and 2 km of cable has been left surface laid and exposed and therefore of high risk to fishing vessels trawling in the area.

The PfS UK cable to the CNSE Offshore Hub will be approximately 224.4 km in length extending from a landfall location by Peterhead on the Scottish coast to the offshore hub location in the Central Graben area of the North Sea. The proposed coordinates of the offshore hub and UK landfall locations are provided below.

Planned routing is between the following platforms;

Landfall near Peterhead ref attached charting

Offshore Hub location near Shearwater

Shearwater Platform

Judy Platform

Elgin Platform

Gannet A Platform

Etap Platform

Ref attached chartlet and coordinate list for further details of proposed routing.

Please contact the undersigned for further information.

Site surveys shall be conducted at;

Balmoral Area                 - Commencement ~ 18/09/2022 - 15/12/2022

Leverett Area                   - Contingency survey scope potential ops from present day until ~15th October 2022, scope shall be deferred into Q2/2023

Brodgar East                   - Commencement ~ 10/10/2022 - mid November 2022

Vessel shall utilise a 1200m streamer and be restricted in ability to manouvre all vessel requested to maintain a wide berth

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MV Norside Cygnus will be conducting walk to work operations and close approach marine ops at the Tolmount platform 500m zone.

The vessel will be operating in DP with restricted manoeuvrability with walk to work bridge deployed at regular periods.

A temporary exclusion of 500m is requested over 360 degrees around the vessel when present on location.

See detailed map on our bulletin website

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:

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)

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.

This campaign will commence on the 12th of October 2022 and continue until approximately 15th of November 2022. The works will be continuous, 24 hours a day. Charts of the DBA array area are provided below. The operations include a single pre-lay grapnel run over the centre of part of the array cable routes prior to IAC installation by means of a grapnel train to mitigate the risk of encountering subsea obstructions such as discarded fishing gear, wires, etc. During operations, the BB OCEAN 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 AHT and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

See detailed map on our bulletin website

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 will commence on the 28th of September 2022, 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 Weekly Notice of Operations.

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

METOCEAN BUOY

The metocean buoys record 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 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).

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

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.

See detailed map on our bulletin website

See detailed map on our bulletin website

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.’

See detailed map on our bulletin website

are.

See detailed map on our bulletin website

Objective is to deploy a limited number of Ocean Bottom Node (OBN) seismometers over a small area to test the operation of the equipment. The trial will involve the deployment of traditional OBN seismometers on the seafloor using a Remotely Operated Vehicle (ROV) plus free flying glider technology based OBN vehicles, along with a current profiler and then the use of an 800-cu. in. seismic source array towed behind a vessel.

See detailed map on our bulletin website

The M/V Fugro Discovery will be deployed over the survey area starting on or around the 01.08.2022 until mid-October 2022. The MV Fugro Discovery will be conducting offshore geophysical survey activities using MBES, SBP, SSS (towed) and MAG (towed). Other vessels should maintain an appropriate and safe distance of 500 m, where possible, when passing the survey vessel(s) whilst undertaking survey operations and should pass at the lowest possible speed to avoid vessel wash effects. 

The M/V Normand Mermaid will be deployed over the survey area (Norfolk Boreas and briefly Vanguard West area) starting on or around the 15.09.2022 for three weeks. Vessel shall deploy and retrieve seabed equipment on each investigation location where it will remain stationary for a period of 2-12 hours.

The M/V Gargano will be deployed over the survey area (Norfolk Boreas and briefly Vanguard West area) starting on or around the 03.10.2022 for three weeks. Vessel shall be drilling on each investigation location where it will remain stationary for a period of 8-24 hours.

The M/V Kommandor Orca will be deployed over the survey area (Norfolk Boreas and briefly Export Corridor area) starting on or around the 03.10.2022 for eight weeks. Vessel shall deploy and retrieve seabed equipment on each investigation location where it will remain stationary for a period of 2-12 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 10-20.10.2022 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

See detailed map on our bulletin website

See detailed map on our bulletin website

Sampling will be conducted using Ocean Ecology’s 0.1 m sq mini-Hamon grab samplers and will be collected within 50 m of the target sampling location. Single grab samples will be collected at each station to collect approximately 10 L of sediment from which a sub-sample of the sediment (a volume of ~500 ml dependent on the nature of the sediment and whether a macrofaunal sample is required or not) will be removed for characterisation of the physical nature of the substrate (via PSD analysis).

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.

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.

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. 

See detailed map on our bulletin website

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

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

Partrac installed metocean buoys and seabed frames in early March 2022 to monitor the local metocean conditions within the NEP carbon capture project area at 7 separate site locations M01 – M07. Following the recovery of the M05 site on Saturday 24th September 2022, Partrac can confirm that all buoys and frames have been recovered from the NEP project area and seabed, and the metocean works have been completed.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

Please be advised that from the beginning of August 2022 the Resource Managenment Association will be undertaking a geophysical and seabed sampling surveys around their licence areas 472 and 526 within the Bristol Channel. 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 Shoreline Surveys. The seabed sampling works will be completed by personnel from Ocean Ecology on the Argyll Explorer. 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.

Inspection survey of ENI Liverpool Bay assets comprising multibeam echo sounder and towed side scan sonar / magnetometer.

• Survey of all LBA pipeline assets and corridors
• Survey of all LBA platform Approaches
• Survey of all LBA wellheads
• Survey of Resurgam wreck

All works will be undertaken using the AMS Panther operating from the ports of Liverpool and/or Mostyn.  The vessell will be towing equipment upto 150m astern of the vessel and will be displaying restricted maneuverability shape/lights/AIS at all times in accordance with the regulations.  A wide berth is requested at all times when the vessel is operating.  A VHF watch (CH16) will be maintained at all times.

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. 

See detailed map on our bulletin website

Please be advised that installation of the Havhingsten fibre optic telecommunication Whitley Bay Stub Route is planned to commence from 13th October within 12 nautical miles.

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

The proposed stub cable route in the Whitley Bay, NE (inshore) region is shown below. The Whitley Bay Stub Route is to be installed between the Beach Man Hole 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.

Pre-lay Grapnel Run (PLGR) will be completed before installation of the cable. Installation will be via industry standard burial tools including water jetting and ploughing. Target cable burial depth is 2m below seabed level.

The main form of cable protection (in addition to burial) is articulated pipe. Articulated pipe will be applied to the cable on the beach from the end of the seaward duct for approximately 425m. The cable protected with articulated pipe will be buried to a target 2m depth, or bedrock, where possible to ensure cable stability.

It is anticipated that installation operations will occupy up to a maximum 500m width of the seabed (250m either side of cable). The cable itself will occupy only 40mm of the seabed.

The cable lay will be performed on a 24-hour basis, the progress speed is normally between 0.5 - 1.0 km/hour (17-20km per average day).

Planned timings of works (exclusive of weather):

All planned installation dates/durations are subject to weather.

PLGR will be undertaken during the 15 to 16 October. Installation between the shore end and <15m water depth will be undertaken during the 13 to 31 October. Installation from >15m water depth will be undertaken during the 17 to 21 October.

All vessels are requested to maintain an appropriate and safe distance of 500m when passing the cable installation vessel whilst operational and should pass at the lowest possible speed to avoid vessel wash effects.

The vessel will be working throughout 24 hours and will display appropriate day shapes and lights during reduced visibility and night operations.

Geophysical Surveys

Geophysical survey operations on the Dogger Bank South array site continues with the Fugro Frontier until approximately the 31st October 2022. The Fugro Searcher has now completed their scope of works on the DBS array sites and has demobilised from the project.

The Fugro Frontier will be undertaking two single survey lines within the two additional areas to the north of DBS, as defined in the tie line tables.

As the Fugro Frontier will be towing survey equipment, vessels will require large turning circles and will be restricted in their ability to manoeuvre. All vessels operating within the array area are requested to keep their distance, maintaining at least the 1,000m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

Please note that completion dates for all survey vessels will be dependent on the prevailing weather conditions and work progress.

A continuous listening watch will be conducted on VHF Channel 16 by all survey vessels.

Survey operations will be conducted on a 24-hour basis.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

All instrumentation is planned for deployment within the Morven Project site in September 2022. A total of 2 metocean instrumentation moorings and 1 underwater noise monitoring mooring and one FLS mooring are to be deployed at each of two deployment locations within the Project site (known as Morven North and Morven South).

The metocean moorings will comprise one directional waverider buoy (DWR) which will be visible on the water surface, moored to the seabed through a combination of rope and rubber cords. The second metocean mooring will be 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 will comprise 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. 

The Skandi Acergy will be undertaking the recovery of 12 suction pile anchors  from the Chestnut Field, UKCS Block 22/2A, this includes work within the 500m safety zone of suspended isolated water injection well 22/2a-17.

This work is due to commence on or around 1st October 2022 for a period of approximately 14 days. This work will involve subsea ROV and crane operations throughout.

The Skandi Acergy will maintain a listening watch on VHF 16 throughout and passing vessels are requested to keep well clear.

Mariners are advised that Scottish Sea Farms intend to deploy scientific equipment at 56 28.259 N 05 35.380 W. A single bottom mounted ADCP rigged in a j-shaped mooring and marked with a surface buoy will be deployed by Ecospan Environmental using the vessel RV Coastal Surveyor, Call Sign 2DLF9. Work will commence Friday 23rd September 2022.  This mooring is expected to be in place until the end of January 2023. Enquiries should be directed to Rachel Speirs at surveys@scottishseafarms.com.

See detailed map on our bulletin website

See detailed map on our bulletin website

On behalf of Seagreen Wind Energy Ltd, Nexans A/S will commence rock placement operations within the Seagreen Export Cable corridor. The flexible fall pipe vessel "Rockpiper" will install rock berms on exposed sections of all three Seagreen Export cables. Three guard vessels are currently on location along the Export cable guarding exposed areas of cable.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The works will re-commence on the 26th of September 2022, 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.

The CSV will undertake pipeline protection (concrete mattresses), and pipeline removal operations at, and in the vicinity of, the Audrey A(WD) and Audrey B(XW) surface installations; at, and in the vicinity of, the Ann, Alison and Annabel subsea installations; and, at, and in the vicinity of, the Ensign surface installation. 

A summary of the works can be found below:

• This survey shall take place from 25/09/2022 to 15/10/2022.
• Contact details
• Onshore: phone: +44 (0) 7926418820, email: OWPLFisheries@xodusgroup.com;
• Offshore Fisheries Liaison Officer (FLO) (bridge number): +44 (0)203 7691458.
• Name of vessel carrying out the work and towed equipment used: Relume
• High Performance Vibrocorer (HPVC 3/6)
• Core Penetrometer R100
• Port of operation: Scrabster.

Acquisition will include: Singlebeam Echosounder, Multibeam Echosounder, Sidescan Sonar (dual frequency 100/400 kHz), Magnetometer, Sub-bottom Profiler, 2DUHR Seismic (10 cu.in mini-gun and 75 m multichannel streamer), and 2DHR Seismic (4 x 40 cu.in GI sleeve airgun array and 600 m multichannel streamer). Environmental sampling and camera work will also be carried out as part of the program.

FLOATING LIDAR BUOY The floating LiDAR buoy 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.

See detailed map on our bulletin website

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.

The ADCP will be mounted on a weighted frame on the seabed which will be anchored to the seabed using a combination of rope and chain.  From this anchor a second anchor will be run on a short length of chain.  This anchor will be attached to the surface via a buoy using leaded pot rope. The RCM meter will be suspended from the down rope at a depth of 4 metres. Their purpose is to collect sub-surface current data.

The works will be completed by personnel from Ecospan Environmental on the vessel ‘Coastal Surveyor’. Mariners are advised to navigate with caution in these areas whilst the vessel is in operation placing this ADCP, as well as during maintenance after 45 days and recovery after 90 days.

SSE Renewables (SSER) is developing the Berwick Bank Wind Farm and wish to further investigate and develop the area which includes the Cambois export cable route. As a part of this investigation, SSER are undertaking a benthic survey along the Cambois Connection export cable corridor which will aim to characterise the benthic environment to inform an Environmental Impact Assessment and Marine Licence application. The purpose of the benthic ecology survey is to map and characterise the distribution and extent of marine benthic biological communities and habitats within the Cambois Connection offshore export cable corridor using grab samples and drop down video/camera work. It should be noted that SSE Renewables are not requesting fishermen to relocate gear - on this occasion the vessels will work around any gear on location. 

See detailed map on our bulletin website

Contact details onshore FLO: +44 (0) 7926418820, email: OWPLFisheries@xodusgroup.com and offshore Spectrum Nyquist: +44 (0) 7803031728 or +44 (0) 7367033380 Spectrum 1: +44 (0) 7538 565561

Name of vessel carrying out the work and towed equipment used: MV Spectrum1 (Geophysical and benthic and Spectrum NyQuist (geophysical)

As part of planned well decommissioning activities using the Olympic Challenger (Offshore Construction Vessel), and on behalf of Fraser Well Management (Well Operator) - the Galapagos appraisal well (211/27a-14) will be plugged and abandoned.

This work is scheduled between 25/09/22 and 31/10/22.

Olympic Challenger call sign - LAZQ7

Geophysical survey work is due to be carried out by two vessels (detailed below).  The vessels will survey the route of the Moyle Interconnector cables, the Scotland to Northern Ireland Pipeline (SNIP) in the North Channel between Northern Ireland and Scotland and also the route of the Larne Lough Crossing and Belfast Lough Crossing pipelines.

The survey work is due to start on 16th September and to be completed by 16th October.  It will be carried out by the vessels Noordhoek Pathfinder (North Channel waters deeper than 10m below LAT) and Deep Marker (North Channel inshore waters to a depth of 15m below LAT; and also Belfast Lough and Larne Lough crossings).  Details for each vessel are provided below.

• Deep Marker: nearshore survey | MMSI 245079000 | Call sign PDXJ
• Noordhoek Pathfinder: offshore survey | MMSI 245457000 | Call sign PBYN

The vessels will monitor VHF Channel 16 at all times and can be contacted on this channel.

All mariners are requested to maintain a safe distance (500m) from the survey vessels at all times.

Further details of the survey are provided in the Notice to Mariners.

Please contact Neil Johnston, who is the Moyle Cable project lead (neil.johnston@mutual-energy.com); or Ryan West, who is the SNIP project lead (ryan.west@mutual-energy.com) if you have any queries or concerns about this survey.

Fugro Searcher (Call Sign: C6EI5) will be carrying geophysical survey work in the Culzean/Ailsa area defined by the Working Area locations noted below:

During survey operations the Fugro Searcher will be towing a 1200m streamer and will have restricted manoeuvrability, please be aware.

Start Date = around 14th September 2022

Duration expected to be approx. 25 Days to around 8th October 2022.

Items still on seabed prior to final decommissioning of field-

•    Rock berm covering conductor stump cement patio.

•    2 x pipeline ends protected with Rock Filter Units

•   1 x Power Cable End

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

2D seismic survey over the Sara area located in UKCS Blocks 3/15 and 3/20 in the Northern North Sea (NNS). The main survey area will be 86km2 and the greater work area will be 372km2.

Towed array will extend up to 1200m from the stern of the vessel

MMO and FLO will be onboard

Vessel: MV Kommandor

Call Sign: MCJ02

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

As part of the cable replacement project a subsea duct has been installed from onshore north of Carradale  to a point ~260m from MHWS. The bell mouth duct end is exposed on the seabed and mariners should avoid  the working area within the red boundary as indicated below. 3 of concrete mattresses are located on the  HDD duct to the west of the bell mouth to stabilize this on the seabed.

Further works relating to the pre-lay survey, route clearance and subsea cable installation will  commence from 11th September and are covered by a separate notice to Mariners issued on 16th August 2022.  

See detailed map on our bulletin website

Helix Seawell at Trees Field Areas (Birch, Larch and Sycamore) to perform well suspension and pre-decommissioning activities.  Mobilisation expected to be on or around 15th September 2022.  This date is subject to change.

Subsea 7, on behalf of IOG, will be undertaking various pre-commissioning activities across the development from the vessel Seven Atlantic.  This work will involve the installation of spools at the Southwark Platform, the Tie-in point of the newly laid section of the Saturn Banks Export Pipeline (PL5152), and at the 24” Manifold location tying in to the Blythe pipeline.  The vessel will also be conducting pre-commissioning activities at the 24” Manifold location.

On completion of the installation and pre-commissioning activities the vessel will install a number of protection mattresses at all the locations.   

During the trip the vessel will also conduct some remediation work at the Blythe platform, within the 500m safety zone.

During the above operations, the vessel will be flying flag Alpha with restricted movement and at times unable to perform course changes or any form of manoeuvring.

The vessel shall either be static or moving at an maximum speed of <1 knot.  Vessel heading may not be indicative of direction of travel and operations will be conducted on a 24-hour basis.

It is requested that no marine activities occur within 500-metres of the 24’ Manifold location at the Thames Pipeline, and the Elgood to Blythe umbilical route during this operational period.

Vessels in transit are also requested to maintain a minimum distance of 500-metres when passing the vessel.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

See detailed map on our bulletin website

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. All metocean instrumentation will remain on location until planned recovery approximately November 2022. As-laid coordinates have been updated in Section 2 for the metocean equipment, following the service visit in August 2022.

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 the attached NtM.

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.

.

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.

Sofia OWF HDD works will comprise of non-invasive multibeam survey (MBES), subsea excavation / trenching and diving operations.

The Forth Warrior and the Three Rivers shall be travelling daily to site from the Port of Hartlepool, with works being undertaken during daylight hours only (weather permitting). 

The ABEKO Server 1 (and accompanying tug, GPS Avenger) will be running 24hr OPS (weather permitting) and will be staying on site for the duration of their activities. Operations will comprise of the 30m/30m excavation within the below coordinates.

The Multicat Vessel “Forth Warrior” shall deploy a 4 Point Mooring arrangement which will remain on location throughout until 31st October 2022 and will comprise of the following components at each location:

Anchor Components and Type

The above components shall be placed in the following coordinates and all vessels are to avoid all of the below anchor coordinates by a minimum 250m radius at all times.

Coordinates of Anchor Locations

The following project vessels shall be monitoring VHF 16 during the scope of the works and shall also be exhibiting the correct day shapes and flag for vessels engaged in diving operations.  They will be restricted in their ability to manoeuvre and at anchor.

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.

A multicat vessel the Delta Marine Voe Jarl, call sign MSBB3 (or a similar vessel) will conduct offshore and subsea operations. Works will include loading and preparatory work at Cullivoe Pier 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; see waypoints below.

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.

The Ocean Endeavor rig is moored at the Rockhopper well in the Penguins field for well operations. 

The rig has 12 anchors including ground chain which extend ~1.5km from well centre and well outside the 500m zone. 

The anchors are connected to the rig with chain and fibre ropes, with the catenaries above the sea floor. 

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.

The rock placement being completed by Heimdal R along the Shetland HVDC Link Campaign 1 is expected to commence on the 13.09.22, with an estimated completion date of the 05.11.22. During this time coaster vessels, Hagland Carrier and Hagland Boss, 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, Hagland Carrier, Hagland Boss 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.

See detailed map on our bulletin website

See detailed map on our bulletin website

The University of Exeter have deployed acoustic receivers along the ~50m depth contour of the south Cornwall coast. These receivers collect information on the movement and residency of electronically tagged Atlantic bluefin tuna. Other receiver networks have been deployed across the English and French Channel, including the Isles of Scilly, to detect these highly mobile species and other tagged fish species as part of the FISH-INTEL project.

The receivers are low profile (75cm height, 45cm width and <0.75sqm) and will be serviced several times each year. The receivers are retrieved by triggering (from the surface) the release of a recovery line from the unit. Receivers are moored to the seabed using rail chair clump weights. There is no permanent tether to the surface. Each receiver has a 100m ground line to provide a retrieval backup.

If a receiver is accidently recovered please retain and contact the University of Exeter (using point of contact).

DSV Boka Polaris will mobilise in Great Yarmouth on 04th September 22 to undertake a ~34 day offshore campaign to execute a Southern North Sea Decommissioning Campaign. The vessel will be working at various sites across the LOGGS and Viking areas. Upon completion of the offshore campaign, the vessel will demobilise to a North Sea port.

CSV Boa Sub C mobilised in the Port of Sunderland on 1st August 22 to undertake a ~110 day offshore campaign to execute a Southern North Sea Decommissioning Campaign. The vessel will be working at various sites across the LOGGS and Viking areas. Upon completion of the offshore campaign, the vessel will demobilise to a North Sea port.

DSV Boka Polaris will mobilise in Great Yarmouth on 04th September 22 to undertake a ~34 day offshore campaign to execute a Southern North Sea Decommissioning Campaign. The vessel will be working at various sites across the LOGGS and Viking areas. Upon completion of the offshore campaign, the vessel will demobilise to a North Sea port.

CSV Boa Sub C mobilised in the Port of Sunderland on 1st August 22 to undertake a ~110 day offshore campaign to execute a Southern North Sea Decommissioning Campaign. The vessel will be working at various sites across the LOGGS and Viking areas. Upon completion of the offshore campaign, the vessel will demobilise to a North Sea port.

Nearshore Geophysical Survey will be performed by GEM in Predator vessel using towed equipment Survey Water Depth is from shoreline (+4.5 m) to 2.2 m LAT Survey is estimated to take place between 22nd August to 30th September 2022. Nearshore Geotechnical Survey will be surveyed by GEM in HAVEN SEAJACK 4 Platform Survey Water Depth is from shoreline (+4.5 m) to 2.2 m LAT.

Due to restricted manoeuvrability of vessels and equipment during the survey works other vessels are requested to maintain an appropriate and safe distance of at least 500 meters around the Predator vessel and HAVEN SEAJCK 4 Platform. The Predator vessel and the HAVEN SEAJACK 4 Platform are available for real-time notification through VHF radio channel 16.

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

Safety

1. Anchor handling operations completed Tuesday 15th August 2022

2. Gravity bases positioning completed Saturday 20th August 2022

See detailed map on our bulletin website

See detailed map on our bulletin website

The Scottish Association for Marine Science will deploy 1 mooring which supports sound recording equipment and acoustic loggers that record echolocation clicks of porpoises and vocalisations of minke whales. The mooring is subsurface and will extend to 5m below the surface (at low tide chart datum). There is no surface marker associated with this device. The recording equipment and moorings will remain at this location for 2 months and should be retrieved in October 2022. 

The intention of deploying the mooring is to collect acoustic information on the acoustic behaviour of harbour porpoises and minke whales in the area, to provide data to aid conservation.

If the mooring is accidentally recovered, please retain and contact The Scottish Association for Marine Science (using point of contact).

See detailed map on our bulletin website

See detailed map on our bulletin website

The works will be performed in a single campaign, commencing on the 17th of August 2022 and continuing until approximately 30th November 2022. The works will be continuous, 24 hours a day. A figure of the DBD array area is provided below.

The operations consist of seabed geophysical survey by means of a towed side scan sonar and magnetometer.

During operations, the Guard Celena 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 night lights. The vessel will also transmit an Automatic Identification System (AIS) message.

It is requested that all vessels maintain a minimum of 500m safety separation distance from the Offshore Guard Celena and pass at reduced speed.

See detailed map on our bulletin website

Please be advised that Briggs Marine Contractors (on behalf of SHEPD) shall be undertaking the following subsea cable installations:

• Mull to Coll – Works commence from 5th September 2022
• Carradale to Arran – Works commence from 11th September 2022

Vessel Operations

The work utilises cable ship Elektron for boulder clearance, pUXO investigations and ROV operations along both routes. Kingdom of Fife will then carry out pre-lay grapnel runs, ahead of cable lay operations, along the specified routes. Elektron will return to site after completion of PLGR to execute the cable installations.

Landing craft Carly and Celtic Trader will be landing equipment at the shore ends of the cable routes with the exception of Carradale.

DSV Forth Drummer will be conducting diving operations within the cable corridor.

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

Post lay surveys of the nearshore areas (<10m LAT) will be conducted in the period following installation but prior to cable burial. This will be conducted during daylight hours using a small unmanned survey vessel (USV) or RIB <10m long. This operation should take <1 day per landfall.

Cable lay activities are expected to continue over a period of 30 days, weather permitting.

As built surveys and burial by ROV jet trenching will follow on but will be covered by a separate NTM closer to the date of execution.

Work Description

During operations the vessels Elektron, Kingdom of Fife and Forth Drummer 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, boulder clearance, pUXO investigations 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.

See detailed map on our bulletin website

DSV Boka Topaz is due to mobilise on 2nd September to undertake a ~34 day offshore campaign to execute an East Irish Sea Decommissioning Campaign. The vessel will be working at Millom East, Millom West, DPPA, Dalton and at open water wells Crossans and Darwen. Upon completion of the offshore campaign, the vessel will demobilise to a North Sea port. Additionally, the Seajacks Leviathan will be along side the Millom West platform for approximately 50 days from the 1st September. 

See detailed map on our bulletin website

These items will be addressed during a separate UXO Clearance phase of work estimated to be performed around October / November 2022. 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.   

Please go to the updated restriction for more information: https://kingfisherrestrictions.org/fishing-restriction-map?noticeId=1166

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The survey vessel GeoOcean III intends to conduct a series of geophysical (MBES, hull-mounted SBES, SBP, SSS, magnetometer, and 2DHR), shallow geotechnical (borehole CPT and VC), environmental (benthic grabs and DDV), and inspection (ROV) surveys.

These surveys will take place at various locations within the Marigold and Sunflower fields, and between the Marigold field and the Piper Bravo platform. Details of relevant coordinates are included in this notice. 

The vessel is planned to mobilise around 19th August 2022. Survey activities are expected to be concluded by the end of October 2022.

For further details please contact:

John Fleming

HSE Manager

Anasuria Hibiscus UK Limited

john.fleming@hibiscuspetroleum.com 

See detailed map on our bulletin website

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.

Brent Charlie is a manned production platform which served the Brent and Penguins reservoirs. The installation has now entered the Cessation of Production (CoP) phase and is due to down staff in late 2022. From October 2022 a NUI NavAid lighting system will be in operation, through to mid-2023. The specification of the system is as follows:-

Two off main white lanterns with a minimum range of 10NM to be mounted in the north-east and south-west corners of the platform. Both lanterns will be synchronised and exhibit flashing a Morse ‘U’ character every 15 seconds. A photocell shall be provided to ensure the lanterns operate within the required period of 15 minutes before sunset to sunrise and whenever visibility is below 2NM. Each lantern shall have a backup in case of failure of the main lantern. The main white lanterns shall have an IALA Category 1 availability factor (99.8%).

It is proposed that that the installation and subsequent commissioning of the new NUI NavAid lighting system will commence around the 2nd week of September 2022 and be completed by the 2nd week of October 2022. Once successful commissioning has been executed, it the existing lighting as detailed in the CtL permit (CL/110/6 V1) will be switched off permanently. This will effectively mean that only the NUI NavAid lighting will be in operation from October 2022 (install date) to the date of topsides lift (mid 2023). Should a fault occur with the new NUI  NavAid lighting system, the existing system will be reenergised until such time as the new NUI NavAid is repaired and is back in service. The current foghorn capability as detailed in CL/110/6 V1 will be retained until down staff in December 2022 (current date). Foghorns will be switched off at down staff (there will be no power generation capability available after down staff).  

Further notifications as required by CL/110/7 V2 will be submitted in due course.

See detailed map on our bulletin website

See detailed map on our bulletin website

Mariners are advised that SSE Renewables will be deploying a bottom mounted ADCP device recording metocean data at three locations within the proposed Berwick Bank Wind Farm array area. An associated guard buoy is currently deployed at each location. All locations referred to are outlined in Table 1 and displayed Figure 1.

It is proposed that three stumpy moorings (M) and a near-bed frame (NB) will be installed on the sea bed within 175m to the three guard buoys which were installed during a previous wave buoy campaign. These locations are all within the Berwick Bank Wind Farm (BBWF) in the outer Firth of Forth on the east coast of Scotland. It should be noted that the near-bed frame will only be situated at one of these three sites at any one time.

The equipment will be deployed during October 2021, with an estimated start date for deployment set for the 14th October 2021. However, this may be subject to change due to weather and/or operational delays. The stumpy moorings will be deployed for 12 months with maintenance and monitoring completed at each three-month interval. The one near-bed frame will be deployed for three months at two sites and 6 months at one site, equating to a deployment duration of 12 months in total.

Planned Activities

The vessel, NKT Victoria, will be used to lay the cable on the seabed floor. Once the cable is laid on the seabed floor the vessel, Grand Canyon III, will be used to trench the cable to the required burial depth in the seabed. Any sections along the cable route that cannot be trenched, rock placement will be undertaken to achieve the required protection. The rock placement works will be completed in two campaigns. All works will be continuous, 24 hours a day.

Within the Noss Head Marine Protected Area the cable will be 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 NKT Victoria, Grand Canyon III and Grane 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. NKT Victoria, Grand Canyon III and Grane R 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.

The mattress and the frame was returned subsea in the safe over boarding area and the bound up loop on the mattress was cut to deposit the mat on the seabed and releasing the frame to be recovered back to deck. Consideration has been given to safe recovery of the mattress using the infield vessel and onboard ROV. However, it has been concluded that this can be achieved more safely during the next planned diving campaign in October. An as left survey of the mattress was completed by HD54 WROV.

See detailed map on our bulletin website

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

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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%.

The deployment location will be marked by 1 yellow buoy, marked “survey”, and 1 orange buoy. Mariners are requested to navigate with caution in this area.

See detailed map on our bulletin website

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. 

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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 v44

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 v44

The metal cages consist of a square cage (61.0 x 91.5 x 15.0 cm), filled with cobble weighing approximately 100 kg, each cage is marked with a surface marker buoy labelled with HFIG. There are four cages deployed approximately 200 m apart in each of the sites, three of which will remain deployed for the summer season (until late September), the other will be hauled and processed approximately every 2 weeks. The RV Huntress will be conducting the deployment and recovery in the Holderness area. Care is to be taken around these location to ensure no snagging of the cages occurs leading to hazard to the vessel or disruption to the experiment.

See detailed map on our bulletin website

See detailed map on our bulletin website

NatureScot, in collaboration with University of Exeter, have deployed 10 Acoustic Reciever Cannisters in the Sea of the Hebrides around the Gunna Sound area (as part of Marine Scotland Science Alba Na Mara June research cruise).

The intention of deploying the ARCs is to collect acoustic information on the movement and residency of tagged basking sharks with the Marine Protected Area, to provide data to aid conservation.

The ARCs are low profile (35cm height and <0.75m2) and consist of 3 x 11 inch floats fixed to a delrin plate that holds the acoustic receiver floating ~1m above anchor (~70kg chain links). The ARCs will be serviced twice a year remotely from a vessel and completely removed at end of 3 - 5 year (end date will depend on battery life of tags and when the tags are deployed). There is no mooring line associated with these devices, and are retrieved by triggering (at surface) a recovery line from ARC unit, so there is no tether to the surface.

If an ARC is accidently recovered please retain and contact NatureScot (using point of contact).

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.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The offshore geotechnical survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project array areas will commence on the 14 June 2022. The investigation involves the drilling, sampling and coring of 30 boreholes throughout the two proposed areas, utilising the vessel Fugro Synergy. The vessel will be stationary at each borehole location for up to 3 days to allow the samples and cores to be taken from the seabed.

In addition to the above, further offshore geotechnical survey of the proposed Morgan (North) and Mona (South) Offshore Wind Farm Project array areas will commence on the 19 June 2022. The investigation involves acquiring up to 120 Cone Penetration Tests (CPTs) (deep push) throughout the two proposed areas, utilising the vessel Normand Mermaid. The vessel will be stationary at each CPT location for up to 6 hours to allow the samples to be taken from the seabed.

Please go to the updated restriction for more information: https://kingfisherrestrictions.org/fishing-restriction-map?The_Canyons_MCZ_2022_Ref:1163

Please go to the updated restriction for more information: https://kingfisherrestrictions.org/fishing-restriction-map?South_Dorset_MCZ_2022_Ref:1162

Please go to the updated restriction for more information:  https://kingfisherrestrictions.org/fishing-restriction-map?Dogger-Bank_Ref:1161

Please go to the updated restriction for more information: https://kingfisherrestrictions.org/fishing-restriction-map?Inner_Dowsing_Towing_Ref:1165

Please go to the updated restriction for more information: https://kingfisherrestrictions.org/fishing-restriction-map?Inner-Dowsing-Static_Ref:1164

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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

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.
 

Please also note that the start date of the 16th of May is subject to our drilling rig finishing its current operations as planned and this date may slip. 

See detailed map on our bulletin website

See detailed map on our bulletin website

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

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

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

See detailed map on our bulletin website

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. 

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

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

See detailed map on our bulletin website

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. 

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.

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.

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

See detailed map on our bulletin website

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.  

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:

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

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.

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.

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.

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.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

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.

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.

See detailed map on our bulletin website

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.

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.

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.

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.

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

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

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