News

GEOxyz will utilise the ‘Geo Ocean IV' to perform a Pre-Installation Survey within the East Anglia Three Offshore Windfarm. 

The vessel will conduct Multibeam Echo Sounder (MBES) and Side Scan Sonar (SSS) surveys of the WTG foundation locations, at a radius of 170m. 

The Multibeam Echo Sounder is hull mounted and the Side Scan Sonar is towed from the stern of the vessel at a height of 6.5m to 10m above the seabed. 

Geo Ocean IV is expected to mobilize from the port of ‘Lowestoft or Great Yarmouth’ circa the 21/04/2026. It is anticipated that the campaign will last approximately 15 days, the end of the campaign will be communicated by closure of this notice to mariners. 

Geo Ocean IV will monitor VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operation. It is currently anticipated that weather permitting, works will be carried out on a continuous basis (i.e.,24- hour working, seven days a week) unless notified otherwise. 

Weather Buoy maintenance to be conducted by the ‘Green Isle’.  

It is currently anticipated that weather permitting, works will commence circa the 13/04/2026 The weather buoys will remain on station throughout the construction phase of the East Anglia THREE Offshore Windfarm. 

Completion of maintenance works will be notified by future Notice to mariners. 

GEOxyz will utilise the ‘Geo Ocean III' to perform boulder and debris removal within the East Anglia THREE Offshore Windfarm. 

The vessel will conduct investigation by ROV followed by relocation of boulders and debris with grab in the WTG locations and IAC strings. 

Geo Ocean III is expected to mobilize from the port of ‘Ostende’ circa the 20/04/2026. It is anticipated that the campaign will last approximately 16 days, the end of the campaign will be communicated by closure of this notice to mariners. 

Geo Ocean III will monitor VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operation. It is currently anticipated that weather permitting, works will be carried out on a continuous basis (i.e.,24- hour working, seven days a week) unless notified otherwise. 

Mariners are advised about geotechnical investigations in the Thistle Wind Partners Bowdun E3 Windfarm Array area, chart provided in Figure 1, and coordinates in Table 1 below. Geoquip Marine is conducting these investigations on behalf of Thistle Wind Partners. Two survey vessels, Geoquip Seehorn and Geo – Connector will be performing these operations. Vessel details and contact information are provided below. The work is expected to commence on 19 April 2026.

EGL2 are due to commence an unexploded ordnance (UXO) target investigation ROV survey on

1 April 2026.

This work consists of a single UXO target investigation to be conducted within the safety perimeter shown in Figure 1, the coordinates for this area are provided in Table 1.

The works consist of an ROV carrying out visual target investigation for the purposes of identifying potential unexploded ordnance, small excavations on the seabed may also be undertaken to identify targets. There may also be a small amount of debris recovery required depending on what is found during the investigation.

The work is estimated to finish on approximately the 20 April 2026, subject to weather.

Works are being undertaken under an approved Marine Licence from the Marine Directorate (MS- 00011033) and the approved Marine Licence from the Marine Management Organisation (L/2023/00211/2)

There will be no unexploded ordnance detonations performed; this is investigation works only.

Mariners are requested to maintain a safety perimeter of 500 m from the vessel Trym.

Cable laying operations will continue to be conducted within the East Anglia THREE Offshore Windfarm by CLV Seaway Phoenix. The vessels will install subsea cables between WTGs and the Offshore Converter Station (OFCS). The Grand Canyon 3 will conduct trenching and burial operations supporting the Cable-Laying operation. During cable deployment, trenching & burial, both the vessels will be restricted in their ability to manoeuvre.The Seaway Phoenix will carry out cable laying activities, and be supported by the Seaway Moxie & Windea Clausius, which will both undertake equipment and personnel transfers to WTGs and the OFCS via a Walk to Work (W2W) gangway system. While conducting these transfers, the Seaway Moxie & Windea Clausius will also be restricted in manoeuvrability.

For further information regarding Inter Array Cable Installation Operations, please see attached East Anglia THREE Notice To Mariners 006-2026 Inter- Array Cable Installation.

NKT will conduct Seabed Rock Installation (SRI) at the East Anglia 3 Offshore Converter Station (OFCS) in the North Sea using the vessel DPFPV Rollingstone. Operations will be conducted continuously, 24 hours a day. The work will be performed in a single campaign.                                                                                                                                                

Rock will be placed on the export cables at the interface to the OFCS. In/out surveys will be performed prior to and following rock placement.

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

Rollingstone is expected to mobilize circa 29/03/2026. Rollingstone will monitor VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operations. It is currently anticipated that weather permitting, works will be conducted on a continuous basis (i.e.,24- hour working, seven days a week) unless notified otherwise. During operations, the Rollingstone will have restricted maneuverability as defined under COLREGs (International Regulations for Preventing Collisions at Sea, 1972). They will display the appropriate day shapes and lights and will transmit an Automatic Identification System (AIS) message. All vessels are required to monitor VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operation.

GEOxyz will utilise the ‘Geo Ocean V' to perform boulder and debris target inspections within the East Anglia Three Offshore Windfarm.

The vessel will conduct investigation by ROV at the WTG locations.

Geo Ocean V is expected to mobilize from the port of ‘Lowestoft’ circa the 27/03/2026. It is anticipated that the works will last approximately 2 days, the end of the works will be communicated by closure of this notice to mariners.

Geo Ocean V will monitor VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operation. It is currently anticipated that weather permitting, works will be carried out on a continuous basis (i.e.,24- hour working, seven days a week) unless notified otherwise.

See detailed map on our bulletin website

Please be advised that Briggs Marine Contractors (on behalf of SHEPD) will be undertaking a ROV survey of the recently installed cable between Mull and Iona.

Please refer to Figure 1 that shows the location of the planned works. Please also refer to Table 2 overleaf that lists the coordinates for the area. 

The ROV survey will take place with the CBS Hurricane and will be regularly passing inside the working corridor. 

Please refer to Table 1 that lists scope of work, estimated date range and the relevant vessels that will be utilised.  As work progresses, further updates will be provided.

Please be advised that Briggs Marine Contractors (on behalf of SHEPD) will be conducting ROV surveys and installing additional subsea cable protection between Coll and Tiree.

Please refer to Figure 1 that shows the location of the planned works.

Please also refer to Table 2 overleaf that lists the coordinates for the area. 

The cable protection installation will take place with the CBS Hurricane and will consist of a ROV survey and Diving operations. 

Please refer to Table 1 that lists scope of work, estimated date range and the relevant vessels that will be utilised.  As work progresses, further updates will be provided. 

The Fugro Frontier will be performing a UXO site investigation for the purpose of UXO ALARP ahead of a planned geotechnical site investigation in May 2026. The Fugro Frontier will be conducting operations within 50x50m boxes using the following sensors:

§  Multibeam Echosounder (MBES)

§  Side Scan Sonar (SSS)

§  Magnetometer (MAG)

§  Survey Verification Test (SVT)

Mariners are advised that Global Marine Systems Limited (GMSL), on behalf of SHEFA, will be undertaking the installation of the SHEFA-2 Fibre Optic Cable system in the North Sea. Operations are anticipated to take place in Q2 2026.

The vessels, CS Sovereign and Glomar Supporter, will be undertaking underwater activities in the area and mariners should exercise caution and communicate with the vessel. 

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

The operational VHF channel for project vessels is Channel 70 and all vessels will monitor Channel 16. Vessels are encouraged to seek further information from local port authorities in areas of operations.

For further details on vessel and schedule see attachment.

A scheduled service from an assigned pool of Platform Supply Vessels providing supplies to the Offshore Converter Platform & JUV until further notice.  Those nominated vessels are:

• Bos Pool;
• Bos Base;
• Dina Merkur;
• Dina Supporter;
• Dina Supplier;
• Dina Scout;
• Highland Knight

An eight legged jacket with 8 driven pin piles has been installed as a foundation for the OCP followed by the OCP itself.

The Sofia Offshore Wind Farm Boundary Co-ordinates where the works will take place are provided below.  All non-project vessels are requested to remain outside this area.

Mariners are requested to remain where possible 500m from vessels. During these works, SOVs will have restricted manoeuvrability and shall also be exhibiting the correct day shapes/ lights and flag for vessels engaged in diving operations and restricted in ability to manoeuvre.

Emergency Response & Rescue Vessel

The EERV Putford Jaguar is supporting the commissioning phase of the Offshore Converter Platform, providing close standby cover as required during overside works.

Service Operation Vessels

The Service Operations Vessel (SOV) “Purus Power” & Daughter craft “Purus Transporter” continues to support the SOWF project throughout the construction of the offshore windfarm.

The 'SOVs' ACTA Centaurus and Austri Enabler continues operations within the Sofia Array.

SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.

Crew Transfer Vessel

The Crew Transfer Vessel (CTV) and MHO Gurli continue operations at the Sofia OWF.

All Mariners are advised to always give a wide berth of approx. 500m metres from the above vessels. The vessels shall be exhibiting the correct day signals / night lights for the operations as defined by COLREGS and can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.

All mariners are advised that MPI Adventure will be carrying out maintenance operations at Rhyl flats Offshore Wind Farm from 10/04/2026 until 18/04/2026. These dates are subject to weather and sea conditions. Specific coordinates of locations where works occur are found below.

Works Locations

Mariners must observe the safety zone of 500m when the MPI Adventure is attached or anchored next to RF14, RF18, RF07 & RF19. It is also requested that mariners observe a distance of at least 500m when MPI Adventure is manoeuvring into position for the safety of all sea users operating 

All mariners and their equipment are requested to remain at least 500m from all infrastructure at all times. CTVs will be regularly on site and mariners should keep a safe working distance of 500 m from these vessels where possible

The following table highlights WTG installation progress and next 7 day forecast.

Vessels operational during these works are as follows:

The exact finish date will be dependent on the prevailing weather conditions and work progress. Mariners are requested to remain where possible 500m from Construction vessels when exhibiting the day shapes / night lights for vessels restricted in their manoeuvrability.

Service Operation Vessels

The Service Operations Vessels (SOV) "Rem Energy", “Purus Power” & Daughter craft “Purus Transporter” continues to support to the SOWF project throughout the construction of the offshore windfarm.

The SOV 'ACTA Centaurus' and 'Austri Enable continues operations within the Sofia Array.

SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.

Crew Transfer Vessel

The Crew Transfer Vessel (CTV) MHO Gurli continues operations at the Sofia OWF.

All vessels can be contacted on VHF 16 throughout as required. All vessels shall be operating to / from the Port of Hull and will be operational 24 hours / day.

IGJ02 51 55.943'N 001 59.565'E

IGJ03 51 55.422’N 001 59.246’E

IGH07 51 55.025’N 001 57.472’E

IGC02 51 57.144’N 001 53.915’E

IGG09 51 53.226’N 001 55.606’E

IGI10 51 52.338’N 001 56.477’E

Venterra have deployed three Floating LiDAR Buoys in the area around the NOAH Met Mast. Deployment operations took take place on or around 6th April 2026. The three buoys will remain on station for a minimum of 1 month, recovery expected in May 2026, weather permitting.

Marine users are advised to always maintain a 500m separation from each buoy and operational vessel at all times.

Mariners are advised that a geophysical survey is planned for the Eastern Green Link 5 (EGL 5) project. The marine survey activities for EGL 5 are planned to commence on the 12th of January 2026 and are expected to complete approximately April 2026.

Eastern Green Link 5 Geophysical survey area consists of multiple Notice to Mariners referenced below (this notice is highlighted in bold):

NtM_EGL5-SSEN-MAR-XX-CO-MC-004

NtM_EGL5-SSEN-MAR-XX-CO-MC-001 - Geophysical survey area outside 12nm

EGL5-SSEN-MAR-XX-CO-MC-002 – Geotechnical survey area outside 12nm

SSEN Transmission and National Grid Electricity Transmission (NGET) are working together to address the need for increased capacity within the transmission network between Scotland and England. EGL5 will help provide increased capacity, carrying up to 2 GW of electricity, enough for two million homes. This will be achieved through a High Voltage Direct Current (HVDC) cable connection between Aberdeenshire and Lincolnshire.

The EGL 5 geophysical survey works are being carried out by Ocean Infinity Limited.

The area of work, pertaining to this Notice to Mariners (NtM) for EGL 5, is highlighted in Figure 1, with the survey vessels contact details for the project found in Table 1. Contact details for the project Fisheries Liaison Officers (FLO) are detailed below.

All mariners and stakeholders are advised that monopile B02 is unlit until further notice.

Whilst unlit the monopile shall be monitored by the guard vessel Ocean Rose

B02 location and coordinates shown in the attached notice to mariners.

During recovery operations following completion of metocean data collection at the Muir Mhor site, the seabed frame was unable to be recovered. Seabed frame recovery was not possible due to transponder onboard vessel being unable to make a connection with acoustic receiver on the seabed frame. It is not yet confirmed whether the seabed frame is in the deployed location and is simply damaged, or whether it has been moved. 

See attached photo for details of the frame.

Last known location of the seabed frame is the deployed location as per coordinates given in this notice.

Report has been made to Marine Directorate on 22/07/2025. Further updates on recovery will be posted to a separate notice (ID-5431).

Search operations were undertaken in March 2026; object not located. Further update to follow.

Jack up Location    GAF05    Gear Box    51° 45.077' N    1° 58.938' E

Jack up Location    IGK03    Main Bearing/ Gear Box/ Generator    51° 52.817 N    1° 58.188' E

Jack up Location     IGF10   Gearbox    51° 51.618' N    1° 53.892'E

NR Cheetah Jack up CTV Support

See detailed map on our bulletin website

There will be various vessels associated with the works. 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. Please distribute this information accordingly so that other sea users are aware.

Please contact myself Adrian Carter, Permitting Manager (adrian.carter@oceaniq.co.uk) or Chris Butler, Project Manager (chris.butler@globalmarine.group) if you have any queries regarding this notification or if you have any information on any underwater activity in this area that is relevant to the operation.

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning as part of the annual operations and maintenance of assets, general visual inspection of the asset foundations (Table 1 and Figure 1). Asset foundation inspections will be carried out by the Voe Vanguard which is expected to be on site from 20th April to 25 July 2026. Works will be completed at all 100 WTG within the red boundary in Figure 1.

Please be aware that, during the survey activities, by virtue of its mode of operation the vessel (Voe Vanguard) will be Restricted in her Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe passing distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 27.In order to not compromise the safety of the Survey Vessel, their crew, and their ability to undertake its contracted works, fishermen who have static fishing gears deployed within 500 m from the WTG where survey activities are planned (see Table 1 and Figure 1) are requested to provide the coordinates of such deployed gears in DMS and details of whether the surface markers used are visible at all states of visibility to Alex Winrow-Griffin (Brown & May Marine) using the contact information below (Section 58 of the Merchant Shipping Act 1995).Fishermen who have static gears deployed beyond 12 nm are reminded that static gear must be marked in accordance with Commission Implementing Regulation (EU) No. 404/2011 (https://www.gov.uk/guidance/marking-of-fishing-gear-retrieval-and-notification-of-lost-gear#marking-of-fishing-gear)

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to undertake geophysical surveys within the site boundary (Table 1 and Figure 1). Survey operations will be carried out by the Geosurveyor XI which is expected to be on site from 15th April to 25th May 2026. The survey will take place within the red boundary in Figure 1.The geophysical survey scope will include Multibeam Echosounder (MBES), Side Scan Sonar (SSS) of a maximum of 50 m width at 22 inter-array cables and 2 interconnector cables, and a 300m2 area around 30 WTGs and 3 OSP locations. The coordinates of the work site boundary are presented in the below Table 1 and shown in Figure 1.

1. General Safety AdvicePlease be aware that, during the survey activities, by virtue of its mode of operation the vessel (Geosurveyor XI) will be Restricted in her Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe passing distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 27.In order to not compromise the safety of the Survey Vessel, their crew, and their ability to undertake its contracted works, fishermen who have static fishing gears deployed within 500 m from the WTG where survey activities are planned (see Table 1 and Figure 1) are requested to provide the coordinates of such deployed gears in DMS and details of whether the surface markers used are visible at all states of visibility to Alex Winrow-Griffin (Brown & May Marine) using the contact information below (Section 58 of the Merchant Shipping Act 1995).Fishermen who have static gears deployed beyond 12 nm are reminded that static gear must be marked in accordance with Commission Implementing Regulation (EU) No. 404/2011 (https://www.gov.uk/guidance/marking-of-fishing-gear-retrieval-and-notification-of-lost-gear#marking-of-fishing-gear) 

Survey operations will be carried out by the Geosurveyor XI which is expected to arrive at the Moray West site 16th April. Geophysical surveys are programmed to be carried out along the Moray West Offshore Export Cable (OEC) on 17th-18th April. The vessel will then proceed to Moray East to survey the windfarm assets, before returning to the Moray West site to complete the geophysical surveys across the rest of the site (around turbines and inter array cables).

The geophysical surveys within the OEC are anticipated to take one day and will be carried out during daylight hours only. Survey operations within the OEC will be able to work around any fishing gear sighted from the vessel. It is anticipated that the vessel will resume work on the Moray West site on approximately 3rd May, with the survey period covering approximately 38 days (16 days of work and a contingency for weather downtime/ delays on Moray East). Works within the Moray West red boundary (Figure 1) will take place throughout a 24-hour period.

XOCEAN is planning the collection of geophysical data using remotely piloted Uncrewed Surface Vessels (USVs) along a proposed cable route corridor in Orkney, from the islands of Sanday to North Ronaldsay. 

The USVs are expected to operate out of Westray Marina for the full survey duration.

A mix of USVs with both hull mounted survey sensors (Multibeam Echosounders & Sub-Bottom Profilers) and also towed sensors (SideScan Sonar & Magnetometer) through the water in proximity of the seabed will be used.

A crewed Support Vessel will be chartered throughout the survey to support the USVs with departures and arrivals from Westray Marina and assist in towing them back in if a technical issue occurs. 

Dates/Duration: Operations are expected to commence around 15 April 2026.

It is expected that the survey activities shall be completed within 30 days (subject to weather). 

Survey Area: Figure 1 below indicates the operational area which is shown by the darker green area. This is outlined in Table 1 below also.  

Fishing Gear Clearance: No fishing gear clearance is presently being requested for these surveys.

Operation of remotely piloted Uncrewed Surface Vessels (USVs) are planned in the southern North Sea, UK, during April and May 2026. The vessels will be engaged in survey activities on behalf of Sheringham Shoal and Dudgeon Extensions ProjCo Limited in the nearshore area of Sheringham (0-12 LAT) as outlined in Figure 1. It is expected there will be two USVs operational at any one time. Dates:  Survey operations are expected to commence from 14th April 2026 for approximately two weeks, subject to weather and other operational factors.

All mariners and stakeholders are advised that Passive Acoustic Monitoring (PAM) moorings for the purpose of underwater noise monitoring will be deployed within and in the proximity of the Inch Cape Wind Farm site.

A total of eight moorings will be deployed within the wind farm site and will remain in place for approximately 7-14 days. Following this period, the moorings will be recovered and redeployed at different locations within the site to remain in place for further 7-14 days. These locations are shown in the attached notice to mariners

A total of two moorings have been deployed outside the wind farm site and will remain in place for 14-30 days. The location and coordinates are provided in Figure 4 and Table 3.

These moorings will not be surface marked as the top of the mooring extends approximately 4-7m above the seabed.

The crew transfer vessel Manor Victor shall deploy the devices with operations expected to be completed within six days.

The works will be performed in a single campaign, commencing on the 10th of April 2026 continuing until approximately the 30th of April 2026. The works will be continuous, 24 hours a day.  

The operations involve the relocation and/or removal of subsea boulders by means of a Remote Operated Vehicle (ROV) around the Wind Turbine Generator (WTG) locations.

During operations, the Trym 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 Trym and pass at reduced speed.

The Jack-Up vessel “ZITON WIND SERVER” is expected to arrive at Sheringham Shoal wind farm on 12th April 2026. Seven WTG locations are planned for major component exchange.

Mariners are advised that Sheringham Shoal Offshore Wind Farm will be conducting a scheduled blade repair campaign between 1 April and 30 June 2026. 

During the summer the CTV “Ava Sofie” will look to complete ladder cleaning activities for Bird waste and marine growth removal on all 88 WTGs. 

PLEASE SEE ATTACHED NTM FOR FURTHER DETAILS ON ALL 3 ACTIVITIES.

Nearshore Geophysical survey, performed under a Marine Licence issued by the Marine Directorate Licencing Operations Team (MD-LOT) – MS-00011499 and a Licence issued by Crown Estates Scotland - ref. AMR/CES/EI-0067.

The Shore Possibility (Tidal) and Presence (Nearshore) will be restricted in their ability to maneuver and will display the appropriate lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea. Other vessels are requested to provide a minimum clearance of 500m from the survey vessels during marine operations and pass at a safe speed. Regular Security Messages will be issued on VHF Channel 16 and this Channel will be always monitored by the vessels. The vessels will also transmit regular Automatic Transmission Identification System (AIS) Messages.

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections across the West Highland marine areas.

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

VESSEL DETAILSThe vessel conducting the works will be restricted in its ability to manoeuvre and will display the appropriate lights and shapes.Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (COLREGs Rule 16 & 18) during marine operations.The vessel will monitor VHF Channel 16 throughout survey operations.

Rollingstone will start operations on 10th of April 2026 and will perform rock placement during multiple loadouts, finishing her scope around 30th of April 2026. Work will be continuous, 24 hours a day.

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

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

Reach Subsea UK LTD are conducting a survey campaign on behalf of Scottish Hydro Electric Transmission Plc. Trading as Scottish and Southern Electricity Networks Transmission (SSENT). SSEN Transmission plan to commence the marine survey inside 12nm on 28th March 2026.  The survey equipment will consist of Multi Beam Echo Sounder (MBES), Side Scan Sonar (SSS), Sub-Bottom Profiler (SBP), Magnetometer, Benthic grabs, Vibrocores and Core Penetration Tests across 2 different vessels that will likely be no further inshore than 15m LAT. The survey equipment will also require calibration testing, which may be conducted outwith the survey corridor.

The westerly exposure is 26m long, the easterly is 27m long.

Mariners are advised that a geophysical survey is planned for the Eastern Green Link 5 (EGL 5) project. The marine survey activities for EGL 5 are planned to commence on the 23rd of November 2025 and are expected to complete approximately April 2026. SSEN Transmission and National Grid Electricity Transmission (NGET) are working together to address the need for increased capacity within the transmission network between Scotland and England. EGL5 will help provide increased capacity, carrying up to 2 GW of electricity, enough for two million homes. This will be achieved through a High Voltage Direct Current (HVDC) cable connection between Aberdeenshire and Lincolnshire.The EGL 5 geophysical survey works are being carried out by Ocean Infinity Limited.The area of work, pertaining to this Notice to Mariners (NtM) for EGL 5, is highlighted in Figure 1, with the survey vessels contact details for the project found in Table 1. Contact details for the project Fisheries Liaison Officers (FLO) are detailed below.

Operations of a remotely piloted Uncrewed Surface Vessel (USV) are planned out of Carlingford starting last week of March 2026. The vessel will be engaged in geophysical survey activities in the Walney West of Duddun Offshore Wind Farm, approximately 16km off the coast of Barrow in Furness. It is expected there will be a single USV operational at any one time.

Dates/Duration: Operations are expected to commence around 3rd April 2026. It is expected that the survey activities shall be completed within 1.5 days (subject to weather).

Survey Area: Figure 1 below indicates the operational area. This is outlined in the attached NtM also.

Exclusion Area / Closest Point of Approach: Seafarers are kindly asked to provide a clearance of >500m from the USV at all times when they are in operation.

Support Vessel: The USV operations will be supported by a crewed Support Vessel.

Attached is a Notice to Mariners issued by RWE concerning Exposed or the risk of Exposed Cables within the Robin Rigg Wind Farm.

Please Read the Updated Notice

Regards  :  Tom Watson

Tel……07903 173 624

During OEG's return scope on EA2 with the Northern Victoria the vessel has a total of 24 archaeology targets to relocate, 5 abondonded fishing nets that are to be recovered to deck or relocated away form planned works locations and multiple debris relocations using a combination of orange peel grab, ROV and ROV/SMT techniques. 

UXO disposals will be carried out using Low Order techniques. There are no High orders expected to be carried out by the disposal team and securite broadcasts will be made at certain times around disposals to all vessels in the area to keep thier distance. 

Sub-Sea Export Cable Repair - N-Sea - will act as the principal contractor using the dedicated DP2 Vessel ‘GEOQUIP ELENA’

‘GEOQUIP ELENA’ can be expected to arrive on-site on or around Saturday 18th. April (picture along with vessel details are on page 3 of the attached notice)

PLEASE READ THE ATTACHED NOTICE

All MARINERS PLEASE NOTE THAT AT ALL TIMES WHILE ON-SITE TO AFFECT REPAIR ‘GEOQUIP ELENA’ WILL BE RESTRICTED IN HER ABILITY TO MANOEUVRE

THEREFORE, WHENEVER THIS VESSEL IS ON-SITE A WIDE BERTH, MINIMUM 500 METERS, IS REQUESTED AT ALL TIMES AND PASSING VESSELS ARE REQUESTED TO REDUCE SPEED IF POSSIBLE.

Small chartlets included with the NtM show the coordinates and the route of the Barrow Export Cable running along the seabed

IN THE LEAD UP TO AND FOR THE DURATION OF THIS SURVEY/REPAIR FISHERMEN ARE REQUESTED, AND ADVISED, NOT TO SET ANY GEAR CLOSE TO OR ALONG THE LENGTHS OF THE CABLE SHADED RED ON THE CHARTLETS - PAGES 2 & 6 - ON THE ATTACHED NOTICE.

PLEASE RE-LOCATE ANY GEAR ALREADY IN CLOSE PROXIMITY – IF IN DOUBT PLEASE CONTACT ME

‘GEOQUIP ELENA’ will keep a listening watch on VHF Channels 16 & 12 and can be contacted for information relating to vessel movements only.

 PLEASE READ THE NOTICE

Page 2 : General information along with two small chartlets showing route of BARROW EXPORT CABLE 

Page 3 : Pictures and details of GEOQUIP ELENA

Page 4 : General schedule of repair works – plus General Safety Advice

Page 5 : Contractors contact details (if required)

Page 6 : Small Chartlet showing ‘work area’ along with co-ordinates

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

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

……………………………………………………………………………………………….

 If in any doubt please contact me

 Regards  :  Tom Watson

Tel………..  Mobile 07903 173 624

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking a subsea inspection in the Outer Hebrides marine area. Please refer to Figure 1 that highlights the location. 

Given the different conditions and water depths anticipated on site, a range of vessels will be available for the project, detailed overleaf. 

The inspection works will be centred on a 50m cable corridor, defined by the start and end coordinates listed in Table 1.

Re surveyed 03/26

See detailed map on our bulletin website

See detailed map on our bulletin website

IWS Windwalker and supporting CTVs will commission 95 WTGs at the locations set out in section 2.2 ofEAT NTM 008-2026 Wind Turbine Generator Commissioning Campaign.Installed WTGs shall be marked with the following aids to navigation:LightsFl Y 2.5s light (visible through 360°)Minimum 2 nm range

Partially constructed monopiles shall be marked with the following aids to navigation where a transition piecehas not been installed:

LightsFl Y 2.5s light (visible through 360°)Minimum 2 nm rangeWeather permitting, offshore works will be carried out on a continuous basis (i.e. 24-hour working, seven daysa week).During operations, the IWS Windwalker will have restricted manoeuvrability as defined under COLREGS(International Regulations for Preventing Collisions at Sea, 1972). They will display the appropriate day shapesand lights and will transmit an Automatic Identification System (AIS) message.

Program Schedule:The IWS Windwalker will mobilise at the Port of Lowestoft, with first commissioning activitiesanticipated to start around 18/03/202

The CTVs will mobilise at the Port of Lowestoft and support the IWS Windwalker throughout thecampaign.

WTG installation is expected to be completed end of Q4 2026.

*Servicing Operations

Servicing of the acoustic monitoring stations will take place from week commencing 30 March 2026, subject to weather conditions.

Operations will involve service vessels working at or near station positions for short durations during suitable weather windows.

Mariners are advised to exercise caution in the vicinity of these positions during active operations.

Some primary aims of the SubSea Soundscape project are;

To support a new Marine mammal evidence base for the Celtic Sea.

To create a region wide acoustic soundscape model and open-source baseline acoustic data of the Celtic Sea integrating new S3 data and other secured acoustic data sources.

To Co-develop road maps for the use of acoustic soundscape models for consenting.

Navigation Advice

Equipment is fully subsurface and presents no hazard to surface navigation.

Trawling, dredging, or seabed gear deployment in the vicinity of marked positions could be avoided to reduce risk of entanglement or equipment damage.

Total vertical height of unit: approx. 5 m above seabed.

Minimum clearance above highest point: 55 m in shallowest locations. 

Each acoustic monitoring system will comprise: 

• Acoustic release system

• Fish tag detection system (69 kHz)

• Broadband hydrophone and cetacean click-train logger

• Mooring frame with integrated components

Nearshore Geophysical survey, performed under a Marine Licence issued by the Marine Directorate Licencing Operations Team (MD-LOT) – MS-00011499 and a Licence issued by Crown Estates Scotland - ref. AMR/CES/EI-0067.

The Shore Presence will be restricted in the ability to maneuver and will display the appropriate lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea. Other vessels are requested to provide a minimum clearance of 500m from the survey vessels during marine operations and pass at a safe speed. Regular Security Messages will be issued on VHF Channel 16 and this Channel will be always monitored by the vessels. The vessels will also transmit regular Automatic Transmission Identification System (AIS) Messages. 

EGL2 are due to commence an unexploded ordnance (UXO) target investigation ROV survey on the 9th of March 2026.

The works are to be conducted within the Exclusion Block (Block 3) shown by Figure 1, the coordinates for this area are provided in Table 1.

The works consist of an ROV carrying out visual target investigation for the purposes of identifying potential unexploded ordnance, small excavations on the seabed may also be undertaken to identify targets. There will also be a small amount of debris recovery required depending on what is found during the investigations.

The work is estimated to finish on approximately the 30th of April 2026, subject to weather.

Works are being undertaken under an approved Marine Licence from the Marine Directorate (MS-00011033) and the approved Marine Licence from the Marine Management Organisation (L/2023/00211/2)

There will be no unexploded ordnance detonations performed; this is investigation works only.

Scottish & Southern Electricity Networks (SSEN) wish to inform Mariners of the completion of marine works in the near-shore area off Warbeth, Orkney which forms part of the Orkney -Caithness HVAC Link  Project.  The completion of this work includes the installation of two subsea assets in the form of two ducts and associated rock bags approx 1km SW of Warbeth Beach, Orkney and have been placed with in the boundaries of the  4 points and associated coordinates  detailed in the attached NTM. The works have resulted in a reduction in charted water depth. 

 Mariners are advised to stay well clear of the area as detailed until further notice.

The Seapiper will work at locations where post cable lay burial operations require an additional level of depth protection. 

The vessel will transit directly from the loading quarry in Norway to site and will not use any UK port.

Mariners are requested to remain where possible 500m from vessels and equipment. Fishing vessels are requested to pass at a safe speed and distance.  

During these rock placement works the “Seapiper” will be restricted in its ability to manoeuvre as it carries out the rock placement work and shall also be always exhibiting the correct day shapes/lights. 

The vessel can be contacted on VHF 16 for further information as required reference proximity/nearby operations etc. 

Please note that rock placement will cause a reduction of navigable depth, but this is unlikely to exceed a 10% reduction. The actual positions of rock placement will be updated as part of the as-built information of the project. 

Note

At this this time, it is important to note that the cable is sensitive to any external impact and constitutes a SUBSEA SNAGGING RISK for anchoring, fishing gear or other equipment with seabed intervention. Seabed activities should be avoided within the designated area until further notice. 

The guard vessel 'Enterprise II' continues monitoring operations within the Sofia Export Cable Corridor between KP4 & KP90 and shall be monitoring VHF 16 during their scope of the works.

Between the 1st March and the 30th April 2026 (subject to weather delays), mariners must observe an approved safety zone of 500m whenever the Geoquip Elena vessel is carrying out essential maintenance work at WTGs C02 or A02 (see chart provided). A minimum separation distance of 500m is also requested when the vessel is working between these WTG positions or observed manoeuvring into position. Note that the Geoquip Elena shall be considered as limited in manoeuvrability, as defined within the COLREGs (1972).

The Iceni Warrior and Iceni Defiant (CTVs) will be supporting the Geoquip Elena with the maintenance work.

Fugro will conduct Seabed CPT at potential turbine locations within the Caledonia Site Boundary, advancing the cone until refusal is achieved. This is an in-situ test to determine seabed soil properties, and it does not involve any sediment removal. As the aim of the survey relates to potential location of wind turbines, no survey operations will occur within the Structure Exclusion Zone (SEZ) in the south east of the site (please see map in attached NtM).

The Seabed CPT work is part of a larger geotechincal survey campaign that will be undertaken within the Array Area. Details of the subsequent scopes in the campaign, and the vessels undertaking them, will be issued as seperate Kingfisher Notices before they are due to commence.

The NtM has been revised to reflect the new mobilisation date and has been re-uploaded below. Caledonia will issue a Weekly Notice of Operations (WNoO) by email and publish on the Caledonia website each Thursday during periods of active survey operations. If you would like to be added to the distribution list, please contact Caledonia Consents (details below).

Galloper Windfarm, RWE - NTM: GWF-O&M 05 – 2026 – WTG Blade Inspections.

Please be advised that Galloper Windfarm will be carrying out WTG Blade Inspections. The campaign will be using the HST Tynemouth/Seacat Liberty/Seacat Mayflower across North and South fields

The vessel will be operating Daytime only, commencing 02/04/2026– weather dependant.

An Exclusion zone of 250 metres will be required whilst the work scope is underway.

See detailed map on our bulletin website

It should be noted that SSE Renewables are not expecting fishers to relocate gear - on this occasion the vessels will aim to work around any gear on location. A scouting/guard vessel will also be contracted to operate ahead of the survey vessels to ensure that this can be achieved. There will be no towed gear as part of this survey. 

The Zenith and Quest (operated by Fugro) will commence operations on 6th April and 25th April, respectively, for a duration of 207 survey days. To account for weather delays and other eventualities, we would like to extend the validity of this notice until 30 November 2026. 

The guard vessel will be either the Tranquillity S or the Reaper alternating approximately every 21 days

Mariners are advised that cable lay and burial works are due to commence at the NeuConnect UK cable offshore and nearshore at the landfall site on the Isle of Grain, Kent. Works will be conducted by Prysmian PowerLink and supported by their subcontractors. 

Installation works are composed of the three operational campaigns: 1. Campaign 1 (C1) – Kilometre Point (KP) 0 – KP 56.  2. Campaign 2 (C2) – KP 56 – KP 199.  3. Campaign 3 (C3) – KP 199 – KP342 (outside UK EEZ Boundary)  

Table 1: Estimated schedule of NeuConnect operations in the UK  

Activities undertaken as part of cable installation works are as follows: • Landfall works • Pre lay • Cable lay (this NtM) • Post lay 

All operations require 24-hour working. Cable Lay- C1 Cable lay operations for C1 were completed November 2024.  Cable Lay – C2  Cable lay operations for C2 were completed December 2025. Cable Lay – C3 The recovery of cable and joint is to commence on 09 February until 13 February. The cable installation began on 09 February and completed works in UK waters on 17 March 2026. Support vessels may assist with specific tasks. Post lay and burial activities remain ongoing. 

Vessels will shelter in Port of Sheerness in the event of weather downtime.  

 Details of vessels and guard vessel deployment locations are provided in the attached Marine Notice 

Partrac Ltd., on behalf of XOCEAN and Scottish & Southern Electricity Networks (SSEN), is deploying a metocean seabed frame mooring for an interconnector cable project between Holm on the Orkney mainland and the Isle of Burray. Details of the deployment position are provided below in Table 1 and Figure 1, and the frame will be deployed for 30 days.  

Partrac is planning to carry out the frame deployment within week commencing 9th February 2026 over one day, weather permitting, using the vessel Green Isle (Figure 3). During deployment and recovery activities, the vessel will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea.

Other vessels are requested to provide a minimum clearance of 50m from the installation vessel during operations, and post-installation, and to pass at a safe speed. 

Survey Area: Figure 1 below indicates the operational area which is shown by the red boundary. This is outlined in Table 1 below also. The seabed frame position is detailed in Figure 2 with coordinates in Table 2. 

On behalf of Inch Cape Offshore Ltd, N-Sea will continue seabed preparation activities within the wind farm site boundary and its export cable corridor. Boulder clearance will focus on the wind farm site and the export cable 2 route. 

Seabed preparation includes the relocation of any boulders which may affect the installation of offshore structures, inter-array cables and export cables.

The boulder relocation vessel, FS Aries will be joined by N-Sea Pathfinder on or around Wednesday the 19th of March.

Last known location of the seabed frame is the deployed location as per coordinates given in this notice. Please ensure fishing gear is at a safe distance to avoid entanglement. Acitivities will commence in November through January 2026, with a weather window expected to allow operations from 17th January 2026. Vessel mobilisation port is expected to be Peterhead Port.

Notice Update 17/03/2026: Vessel Gaoth na Mara (details below) will mobilise from Peterhead Port on 19th March for operations 19th-21st March.

Notice Update 15/01/2026 for vessel details: Vessel is Gaoth na Mara, IMO9679737, vessel bridge mobile +447498176389.

We request marine users to remain 500m away from all assets and ensure fishing gear is at a safe distance to avoid entanglement. MARINERS ARE REMINDED to navigate with caution and keep continued watch on VHF Ch. 70 / 16 when navigating the area.

Note: this notice is a replacemnt for Notice ID5300 which was originally submitted 26th August 2025.

The Seabed Frame search will involve a drop-down camera or ROV for subsea visuals, with a search area around the deployed location. Upon locating the Seabed Frame, retrieval will be undertaken.

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections in the Argyll marine areas. Please refer to Figure 1 - Figure 2 that highlights each cable location. 

Given the different conditions and water depths anticipated at each site, a range of vessels will be available for the project, detailed overleaf. 

The inspection works will be centred on a 50m cable corridor, defined by the start and end coordinates listed in Table 1. 

Survey Activities: XOCEAN is planning the collection of geophysical data using remotely piloted Uncrewed Surface Vessels (USVs) along a proposed cable route corridor in Orkney, from the islands of Sanday to North Ronaldsay. The USVs are expected to operate out of Westray Marina for the full survey duration. A mix of USVs with both hull mounted survey sensors (Multibeam Echosounders & Sub-Bottom Profilers) and also towed sensors (SideScan Sonar & Magnetometer) through the water in proximity of the seabed will be used. A crewed Support Vessel will be chartered throughout the survey to support the USVs with departures and arrivals from Westray Marina and assist in towing them back in if a technical issue occurs. 

Dates/Duration: Operations are expected to commence around 20 March 2026. It is expected that the survey activities shall be completed within 30 days (subject to weather). 

Fishing Gear Clearance: No fishing gear clearance is presently being requested for these surveys. 

Situational Awareness: Although the USVs are uncrewed, they are remotely piloted throughout the 24-hour operation. The USV sends real time images and situational awareness data over satellite to allow this monitoring. The situational awareness aids available are listed below. 

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.

This campaign will commence around 16th March 2026 and continue until approximately 15th of April 2026. The works will be continuous, 24 hours a day. Charts of the DBC 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 Nora B 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 vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

The Marine Characterisation Research Project (MCRP) is an innovative research and development project that will ensure the safe phased deployment of tidal energy turbines in the Morlais Demonstration Zone (MDZ). Working with a team of experts, the project have developed an Environmental Monitoring and Mitigation Plan to safeguard marine wildlife. The findings will be made available for future marine renewable energy projects to enable the growth of tidal stream energy.The aim of the project is to facilitate environmental data collection, and support research and development of turbine centred monitoring and mitigation devices. The knowledge gained will enable the safeguarding of wildlife during the development of the MDZ.To best exploit the opportunity available to gather valuable and relevant information, the MCRP procured a scientific lidar research buoy, upon which the MCRP deployed data collection equipment, in order to gather baseline data from the MDZ and test the equipment.Following a successful refit in the port of Holyhead during November 2024, the Marius buoy has been redeployed in the Morlais zone for a further 18-month period of data collection.As this period of research and development comes to a close, the MCRP wish to notify you of the demobilisation of the Marinus buoy circa early April, weather dependent.

SSEN Transmission and National Grid Electricity Transmission (NGET) are working together to address the need for increased capacity within the transmission network between Scotland and England. EGL5 will help provide increased capacity, carrying up to 2 GW of electricity, enough for two million homes. This will be achieved through a High Voltage Direct Current (HVDC) cable connection between Aberdeenshire and Lincolnshire.

The EGL 5 geotechnical survey works are being carried out by Ocean Infinity Limited.

The area of work, pertaining to this Notice to Mariners (NtM) for EGL 5, is highlighted in Figure 1, with the survey vessels contact details for the project found in Table 1. Contact details for the project Fisheries Liaison Officers are detailed in the attached NtM.

Please note, this survey will be able to operate around static fishing gear. Therefore, fishing gear clearance is not being requested.

Navigational Safety Advice:

Vessels are requested to pass at a safe speed and distance and fishing vessels are advised to remain a safe distance, approximately 550m (0.3 nautical miles) from the areas identified. During these works the vessel will have restricted manoeuvrability as it completes its work scope.

VHF CH 16 will be monitored at all times and will be used to contact the coastguard in the event of an emergency.

The geotechnical survey works are being carried out by Ocean Infinity Limited and Geoforce using the following vessels:

Survey vessel: A7803 (IMO 9924261; MMSI 563175900; Call Sign 9V8529)

Survey vessel: VOE Vanguard (IMO 9809693; MMSI 232008636; Call Sign MEBN9

On behalf of Inch Cape Offshore Ltd, Seaway 7 shall commence the installation of 54 WTG foundation transition piece components.

The transition pieces will be transported from the Port of Leith to the Inch Cape site and installed by the heavy lift vessel Seaway Alfa Lift.

Alfa Lift is expected to arrive at the Inch Cape site on or around the 17th of March to commence installation which will continue for several months, further details are in the attached notice to mariners.

Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections across the Outer Hebrides marine areas.

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

Vessel Details

The vessel conducting the works will be restricted in its ability to manoeuvre and will display the appropriate lights and shapes.

Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (COLREGs Rule 16 & 18) during marine operations.

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

Wind Osprey and Wind Pace will install 95 WTGs

Installed WTGs shall be marked with the following aids to navigation:

Lights

• Fl Y 2.5s light (visible through 360°)
•  Minimum 2 nm range

Partially constructed monopiles shall be marked with the following aids to navigation where a transition piece has not been installed:

Lights

• Fl Y 2.5s light (visible through 360°)
• Minimum 2 nm range

Weather permitting, offshore works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week).

During operations, the Wind Osprey and Wind Pace will have restricted manoeuvrability as defined under COLREGS (International Regulations for Preventing Collisions At Sea, 1972). They will display the appropriate day shapes and lights and will transmit an Automatic Identification System (AIS) message.

• The steel wire rope sections are assumed to be remnants of discarded trawl wire or anchor cable and are now partially exposed above seabed level.
• The wire does not pose a hazard to general navigation.
• However, it may present a risk to small vessels when anchoring or operating gear near the seabed.
• A substantial amount of wire remains buried beyond each of the location ends detailed below.

• The steel wire rope sections are assumed to be remnants of discarded trawl wire or anchor cable and are now partially exposed above seabed level.
• The wire does not pose a hazard to general navigation.
• However, it may present a risk to small vessels when anchoring or operating gear near the seabed.
• A substantial amount of wire remains buried beyond each of the location ends detailed below.

It is requested that mariners avoid activities which are likely to disturb the seabed within a 500m Radius of this location until the exposed export cable has been re-investigated. A further Notice to Mariners will be issued to confirm the course of action we will be taking to rectify this. Please note that the standard safety rules apply when fishing in or near wind farms and associated cables. All mariners are requested to make themselves aware of their obligations for conducting activities over buried and protected cables under International and UK Cable (Sub-sea) Protection Legislation. 

Mariners are reminded to navigate with caution and keep continued watch on VHF Ch. 12 / 16 when navigating the area. The Marine Coordination Centre will be responsible for monitoring and policing the Safety Zone and can be contacted directly for advice. Further information on the risks to fishing adjacent to subsea cables can be found in Weblinks: www.kis-orca.eu https://www.seafish.org/article/kingfisher-bulletin 

All mariners and stakeholders are advised that a Passive Acoustic Monitoring (PAM) mooring array for the purpose of monitoring marine mammals’ detections is currently deployed along the east coast of Scotland, within 2 km of the coast, between St Andrews Bay and Inverbervie.

The PAM array will remain in situ for 2 years (i.e. up to August 2027) with a service interval every 3 months. The moorings will not be surface marked as the top of the mooring extends approximately 4-7m above the seabed.

 During a servicing trip on Saturday 21st February, an item has been dropped to the sea during the recovery of the Passive Acoustic Monitoring mooring at Carnoustie, coordinates shown in the attached notice to mariners.

One PAM mooring was redeployed during the service trip on 21 February 2026, locations and coordinates for the passive acoustic monitors currently in place are shown in the attached notice to mariners.

See detailed map on our bulletin website

The works will commence around the 21st of February 2026 continuing until approximately Q2 2027.  The works will be continuous, 24 hours a day.  A chart of the DBB construction area boundary coordinates and a table of WTG location coordinates is provided below. A running list of the completed WTG installations and the next locations to be installed is presented in the Weekly Notice of Operations.

During operations, the Voltaire 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. 

During operations, a Statutory Safety zone of 500m radius will be in place around the Voltaire during the installation of WTGs

Seaway 7 deployed a Wave Rider Buoy on the 01/05/2025 within the boundary of the East Anglia THREE Offshore Windfarm Array during the Monopile Noise monitoring campaign as referenced in EA3 NTM 026 - 2025 Monopile Installation (Noise Monitoring Buoy Deployment). The Wave rider Buoy will remain on station until the end of the project.

The Wave Rider Buoy is equipped with a flashing yellow light and has a range of four nautical miles.

Recovery and/or periodic maintenance of the Wave Rider Buoy will be notified via future Notice to Mariners

Positions for both North & South weather buoys are identified in the attached Notice To Mariners 005 -2025. There will be periodic maintenance for both weather buoys during construction of EA3.

There is an exclusion zone of 100m around the weather buoys, mariners are  advised to abide by the 100m safety zone and navigate with caution at all times.

Norside Supporter Will be Bolting and Grouting 95 monopiles and transition pieces at the WTG locations set out in section 2.2 of this document. It is currently anticipated that weather permitting, offshore works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week)

OverviewMariners are advised that North Falls Offshore Wind Farm (NFOWF) will undertake a metocean survey within the Wind Turbine Array Area, at the Primary and Secondary locations shown in Table 1 and Figure 2.

Survey Duration Mobilisation will commence on or after 18 February 2026, with the metocean survey lasting between 12 and 18months. The planned survey end date will be no later than 16 August 2027.

Survey Tasks The metocean survey work is being undertaken by Partrac, who will use the vessel CT Vector to deploy the metocean equipment at the Primary and Secondary locations shown in Table 1 and Figure 2. It is expected that the deployment operation will last for one day.

The metocean equipment will consist of one seabed frame deployed at each location (i.e., a total of two seabed frames). Each seabed frame will be equipped with an acoustic Doppler current profiler (ADCP) and additional sensors (temperature sensor, water-level sensor, and turbidity sensor). Each seabed frame will be connected to a clump weight, with approximately 100 m leaded polypropylene ground line between the seabed frame and clump weight.

As a consequence of equipment being deployed, all mariners are advised to keep a safe clearance distance of no less than 500 m from the deployment vessel and metocean equipment deployment locations. No towed survey equipment will be deployed from the vessel.

CTV - HST Tynemouth supporting service operations over the summer months commencing 1st March 2026 

Vessels shall be monitoring channel VHF 16 and shall be displaying the relevant day shapes / night lights when restricted in its ability to manoeuvre.

Mariners are requested to refrain from entering and transiting through the construction area as demarcated by these demarcation buoys. 

The table below provides a summary of each Cardinal and Special Mark Buoy deployed at the SOWF array, including target coordinates in WGS84 Degrees Decimal Minutes and a description of top mark and lantern characteristics. The Demarcation Buoys will be deployed for a period of approximately three years.  

The table below provides a summary of the Met-ocean Buoys deployed at the SOWF Array.

The table below provides detail of Seabed Met-Ocean Buoy Moorings that remain in place at SOWF (Excluding Buoy).

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.

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.

All mariners and stakeholders are advised that the recently installed temporary navigation light on the P32 monopile has been reported as unlit.

On behalf of Inch Cape Wind Ltd. Jan de Nul will commence the installation of wind turbine generator foundation monopiles. The monopile components will be transported from the Port of Leith to the Inch Cape site and installed at 54 locations within the wind farm boundary.

The installation vessel Les Alizes is expected to arrive at Inch Cape to commence operations on or around the 25th of December. Each monopile will be installed with a lit temporary navigation structure, the light shall exhibit Flashing (Fl) Yellow (Y) 2.5 seconds (s) 

Monopile installation is expected to continue until May 2026.

See detailed map on our bulletin website

The jack-up vessel ‘JB 120’ will be positioned next to the East Anglia THREE OFCS within the East Anglia THREE Offshore Windfarm area.

• Rig move: The vessel will be maneuvered to its designated location.
• Jacking-Up Procedure: The vessel will be temporarily soft jacked on a safe stand-off position, from where its four anchors and mooring lines will be deployed. The deployed mooring lines will be used to move the vessel safely towards the final position, where the vessel will be jacked.
• Operational Phase: Once jacked up, the vessel will remain stationary for an estimated six months.

During operations, the ‘JB 120’, ‘CENTAURUS’ (Lead tug), ‘FAIRPLAY 62’ (Assistant tug) and ‘FAIRPLAY 32’ (Assistant tug) will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessels will also transmit an Automatic Identification System (AIS) message.

A Statutory Safety zone of 500m radius will be in place around the ‘JB 120’ at all times.

‘JB 120’ and supporting tugs are supplied with VHF multi-channel radios and mobile phones.

The works will be performed in a single campaign, commencing on the 7th of December 2025 and continuing until approximately Q4 2026. The works will be continuous, 24 hours a day. The operations will include visual inspections and remedial maintenance at the Offshore Substation Platform (OSP) and at installed WTG foundation locations. During operations, the IWS Sun Walker will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 500m separation distance from the SOV and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working area.

THV Patricia has relocated the EA3 East 1 Buoy, EA3 East 2 Buoy, EA3 East Buoy 3 and the EA3 Special 3 Buoy marking the boundary of the East Anglia THREE Offshore Windfarm Array.

The demarcation buoys will remain on station throughout construction of the East Anglia THREE Offshore Windfarm.

For futher information regarding East Anglia THREE aids to navigation, please see attached EA3 Notice To Mariners 080- 2025 - Aids To Navigation – Demarcation Buoys.

The ERRV ‘ESVAGT CARPATHIA’ provides relief duties for standby emergency rescue services during thecommissioning phase of the East Anglia THREE Offshore Converter station (OFCS) ‘EA3 OFCS’. The ESVAGT CARPATHIA will be required to cover these duties when the primary Emergency Response Rescue Vessel 'ESVAGT CARTPATHIA' conducts port calls for crew changes and resupplies.

It is currently anticipated that weather permitting, operations will be carried out on an on-demand basis (i.e.weekly, bi-weekly, ad hoc).Arrival and departure plan of the 'ESVAGT CARTPATHIA' will be notified via the East Anglia THREE Weekly Noticeof Operations.Completion of the 'ESVAGT CARTPATHIA’s' work scope will be notified by closure of this Notice to Mariners.All vessels will continuously monitor VHF Channel 16 and VHF DSC Channel 70 throughout operations.It is currently anticipated that weather permitting, works will be carried out on a continuous 24-hour basis,seven days a week, unless notified otherwise.

Crew Transfer Vessel NR Predator will provide assistance during the construction phase of the East Anglia THREE Offshore Windfarm Array and will make regular transits between East Anglia THREE CDM and the ports of Lowestoft and Great Yarmouth. 

Outer Thames Estuary Special Protection Area (SPA): 

As required under Deemed Marine License Condition 13(1)(c)(v) to minimise disturbance to red throated diver in the Outer Thames Estuary Special Protection Area (SPA) during construction of East Anglia THREE, these areas shall as far as practicable be avoided during transits from 01st November to 31st March. 

The ERRV ‘ESVAGT COBRA’ provides standby emergency rescue services during the commissioning phase of the East Anglia THREE Offshore Converter station (OFCS) ‘EA3 OFCS’.  

 ‘ESVAGT COBRA’ will carry out regular transits between East Anglia THREE Windfarm and the port of Lowestoft and is equipped with VHF multi-channel radios and mobile phones.

The platform supply vessel ‘BOS PRELUDE’ provides supply service during the commissioning phase of the East Anglia THREE Offshore Converter station (OFCS) ‘EA3 OFCS’.

‘BOS PRELUDE’ will deliver supplies to the ‘EA3 OFCS’ and the jack-up vessel ‘JB 120’ (as long as installed next to the OFCS) as well as carry out regular voyages between East Anglia THREE Windfarm and the ports of Emden (Germany, main service port) and Lowestoft (UK) and is equipped with VHF multi-channel radios and mobile phones.

Outer Thames Estuary Special Protection Area (SPA):

As required under Deemed Marine License Condition 13(1)(c)(v) to minimise disturbance to red throated diver in the Outer Thames Estuary Special Protection Area (SPA) during construction of East Anglia THREE, these areas shall as far as practicable be avoided during transits from 01st November to 31st March.

Reported faults on AIS system, Fog Sounding Warning and Aviation lights.

Please review attached notice for further information on each item.

HS1 - Failed aviation lighting

HS1 & HS3 - No AIS Signal

HS2 & HS4 - Failed fog sounder

Muir Mhòr Offshore Wind Farm Limited will deploy 2 x Measurement Systems to collect data located within a 1.5km x 2.5km area. Once deployed this Notice will be updated with as laid co-ordinates. The campaign is expected to last up to 2yrs.

The works will consist of the deployment of two seperate systems with buoys connected to a mooring line & chain anchored to the seabed with backup recovery line. Please ensure fishing gear is at a safe distance to avoid entanglement. Works will commence in October/November 2025 and the installation vessel will mobilise from Peterhead Port. 

Note: this notice is a replacemnt for Notice ID5254 which was originally submitted 18th August 2025.

See detailed map on our bulletin website

Crew Transfer Vessel NR Hunter will provide assistance during the construction phase of the East Anglia THREE Offshore Windfarm Array and will make regular transits between East Anglia THREE CDM and the ports of Lowestoft and Great Yarmouth. Outer Thames Estuary Special Protection Area (SPA): As required under Deemed Marine License Condition 13(1)(c)(v) to minimise disturbance to red throated diver in the Outer Thames Estuary Special Protection Area (SPA) during construction of East Anglia THREE, these areas shall as far as practicable be avoided during transits from 01st November to 31st March.

It is currently anticipated that weather permitting, operations will be carried out on a continuous basis (i.e. 24-hour working, seven days a week) ‘NR Hunter’ will remain on the project until construction is complete

Clump weight is 2500kg, approximately 0.75m^3 and lies <1m on the seabed.

Transmission system operator Elia is building the Princess Elisabeth Island in the Belgian part of the North Sea. This artificial energy island is an extension of the electricity grid in the North Sea. It connects the future wind farms of the Princess Elisabeth Zone with the Belgian coast and creates new connections with neighbouring countries.

The energy island is built centrally in the Princess Elisabeth wind zone, approximately 45 km from the Belgian coast. Construction of the island will take several years. To ensure safety during the works, the Belgian government defined an exclusion zone within which only work vessels are allowed. This zone is marked by 4 cardinal buoys (ELI-N, ELI-E, ELI-S and ELI-W).

Seabed preparatory works took place in spring and summer 2024. The installation of the caissons started in April 2025 and will proceed untill autumn 2026. During the winter months, no installation works will take place. The exclusion area remains in force at all times.  

More information about the Princess Elisabeth Island is available on the Elia website: https://www.elia.be/en/infrastructure-and-projects/infrastructure-projects/princess-elisabeth-island. 

A total of 32 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.

The guard vessel ‘Tess’ will monitor vessel traffic in and around the East Anglia Three Offshore Windfarm 24hours a day, 7 days a week. The vessel will broadcast regular navigational warnings and will contact any non-project vessels they believe could cause potential hazards, risk of collision, or cause an interruption to project vessels or assets. She will be monitoring VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operaton.

East Anglia THREE will be a large offshore wind farm, located 69 km off the Norfolk coast. With a projected capacity of approximately 1400MW, the wind farm shall supply electricity to approximately one million UK homes. Onshore construction for the project started in July 2022. 

By use of multiple specialized offshore vessels,1 Offshore Convertor station (OFCS) & 95 offshore wind turbine generators (WTGs) will be installed within the East Anglia Three site boundary along with the associated inter array and export cables. The generated power will be transmitted via an installed External Cable (EC) from the OFCS to a shore side substation located in Bramford.