Partrac Ltd. deployed FLS200 Floating LiDAR buoys at two sites (Site 1 & Site 3) within the Ossian Floating Offshore Wind Farm off the East coast of Scotland in August 2022. Partrac is planning to service the LiDAR buoy at Site 3 from 9th November 2024 using the vessel Waddenstroom. The works at site are estimated to be carried out over two days, weather permitting. Both LiDAR buoys will be deployed until April 2025, and maintenance visits will be undertaken every 4-6 months.
The floating LiDAR buoys deployed at sites 1 and 3 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 lantern has a flash sequence Fl (5) Y 20s. Please maintain a 500m exclusion around each buoy.
See detailed map on our bulletin websiteThe Fugro Venturer shall undertake a Geophysical Survey over a 4km x 2km Survey area at Tellus Area 1.
The geophysical survey comprises MBES, SSS, UHR2D, HR2D, Seabed Grabs/Camera & shallow Geotechnical data acquisition. Operatons are scheduled to commence around 12th November for up to 6 weeks. Towed sensors will be up to 1300m behind the vessel during operations and Vessel maneuverability shall be limited. Contact w.reid@fugro.com or pc@fvr.fugro.com.
See detailed map on our bulletin website
Major component repairs are to be carried out on Beatrice Windfarm involving the use of a Self-propelled Jack up vessel (Wind Orca) will be undertaken from the 04th of December lasting for approximately 21 days, subject to weather. The vessel will operate at one asset on the Beatrice Windfarm replacing the generator on WTG BE-M09
On the 17th of March the department of Business, Energyand industrial Strategy confirmed that BOWL is permitted to enact temporary 500 metre safety zones around all major maintenence works being undertaken on BOWL assets within the windfarm.
Only vessels involved in activities related to major maintenence work are permitted to enter or remain in the safety zones while they are in force.
Fishermen who have static gear deployed within 500 metres from the WTG where major rapairs are planned are requested to provide the coordinates of such deployed gear in DMS.
Mariners are requested to navigate with caution and keep a continued watch on VHF Ch. 16/70 when navigating the area.
See detailed map on our bulletin websiteInter-array cable rock placement operations will continue within the boundary of the Seagreen Offshore Wind Farm site.
On behalf of Seagreen Wind Energy Ltd, Seaway 7 will conduct rock placement operations on areas of under-buried or surface laid inter-array cable within the boundary of the Seagreen offshore wind farm. The Fall Pipe vessel Yellowstone is expected to arrive at the Seagreen site on or around the 19 th of October. Operations are expected to be completed within 2 weeks. Vessel details below
See detailed map on our bulletin websitePlease be advised that the Ocean Researcher will be undertaking a Geophysical and Benthic survey campaign at the proposed Aspen Lease Area, on behalf of Cerulean Winds.
Please be advised that the Ocean Researcher will be undertaking a Geophysical and Benthic survey campaign at the proposed Aspen Lease Area, on behalf of Cerulean Winds, with the Ocean Geograph also undertaking a Geophysical and Benthic sampling survey of the Offshore Demand Cable (ODC) Corridor from the landing point, south of Muchalls, to the Aspen Lease Area. The purpose of this Notice to Mariners (NtM) is to outline the working area for the survey vessels at the location, as well as their scopeof work. The survey will utilise 2 vessels: - Ocean Researcher - Ocean Geograp
See detailed map on our bulletin websiteSalamander Offshore Wind Farm plans to retrieve the metocean buoy (WS164) from the Offshore Array Area between Sunday 10th and Friday 15th November (weather dependent); the two FLiDAR buoys and echosounder will remain in place. The vessel MS Elizabeth (LHEA) will retrieve the buoy and transport it to Norway, where it will be collected by Fugro. Marine users are advised to maintain a safe clearance distance of 500 m from the buoys.
Planned deployment within the Salamander Offshore Array Area consists of:
Illustrative figures showing the buoy dimensions and general mooring arrangement are provided in the attached NtM.
Once in the water the top of the tallest mast is around 4 meters above the sea level. The buoys' drifting radius is approximately 240 m from their deployment positions.
The buoys are fitted with the following navigational safety features:
Hughes subsea intend to commence UXO clearance works within the East Anglia Three CDM zone along the export cable route near Bawdsey. Works are currently underway to relocate two UXOs
All vessels are requested to avoid the work site by 1500 meters while the DSV Curtis Marshall is on site and performing clearance activities.
See detailed map on our bulletin websiteTwo floating LiDAR buoys have been permanently recovered from the Morven offshore wind farm site, having completed the measurement campaign. The buoys and full moorings have been recovered from the site and returned to shore.
Please be advised that A-2-Sea Solutions Ltd (on behalf of SHEPD) are undertaking a marine geotechnical survey along the two cable routes within Loch Linnhe as detailed below. Surveys will survey vessel ‘Mintaka I’ to complete survey operations: Offshore operations will be undertaken between 11th and 25th November 2024 with a planned total duration of four days works during this period, weather permitting.
Please be advised that A-2-Sea Solutions Ltd (on behalf of SHEPD) are undertaking a marine geotechnical survey along the two cable routes within Loch Linnhe as detailed below. Surveys will survey vessel ‘Mintaka I’ to complete survey operations:
Offshore operations will be undertaken between 11th and 25th November 2024 with a planned total duration of four days works during this period, weather permitting.
The Loch A’Choire / Loch Linnhe sampling operations will be concentrated within a 200m corridor centred on the two routes defined by the coordinates in the attached NtM.
Survey Description
The survey will involve collection of seabed geotechnical sediment testing utilising CPT and vibrocore equipment. This involves Mintaka holding station at certain points along the route to carry out the testing.
Other vessels should maintain an appropriate and safe distance of 500 m when passing Mintaka 1 whilst undertaking operations and should pass at the lowest possible speed to avoid vessel wash effects. The vessel(s) will be working 24-hour operations and will display appropriate day shapes and lights during reduced visibility and night operations. The vessel(s) will also monitor VHF Channels 16 and 12.
The NtM is to advise mariners of the vessel activity within the area. No fishing gear clearance is requested for these works.
See detailed map on our bulletin websiteTwo Floating Lidar buoys will be deployed near the NOAH met mast for an approximately 1-month long wind verification campaign.
Eolos and Partrac will deploy two Floating LiDAR buoys (FLS200 E19 and E41) to conduct post-campaign verification against the NOAH met mast. The measurement period is expected to last approximately one month, concluding once a qualitative and quantitative assessment has been completed and confirmed as compliant with industry standards by an independent third party.
The deployment and subsequent recovery will be dependant on weather window and vessels availability in the area. Hence, the deployment period can be extended for a few weeks.
See detailed map on our bulletin websiteThe trenching support vessel, Grand Canyon III, will perform post-lay burial trenching works at the Dogger Bank B Offshore Substation Platform (OSP) in the Southern North Sea.
Grand Canyon III will undertake these works during the post-lay burial campaign of the Dogger Bank C export cable route, within section 1 (KP0 – KP91.5) and section 3 (KP175 – KP255), which are covered in a separate NtM (LF700013-ESI-DOG-NOT-0016).
The work will be undertaken between 05 November 2024 until 20 November 2024. Work will be performed within the OSP trenching area and will be continuous, 24 hours a day.
Coordinates of the post-lay burial trenching working areas are provided within Table 1 and a chart of the works presented in Figure 1.
During post-lay burial operations, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. Grand Canyon III will be restricted in its ability to maneuver 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.
In the period between cable lay operation until the cable has been permanently protected by means of burial or rock placement, the cable may be locally exposed on the seafloor and the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.
To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM LF700013-ESI-DOG-NOT-0008). The primary purpose of the guard vessels is to protect the exposed cable along the Dogger Bank C Export Cable corridor by monitoring and issuing warnings to marine traffic operating within 6Nm of the construction area with a Closest Point of Approach (CPA) < 1.5Nm.
See detailed map on our bulletin websiteGreen Rebel, on behalf of Magnora Offshore Wind, has deployed a Floating LiDAR (FLS) System buoy and a Directional Wave Rider (DWR) buoy at the Talisk Offshore Wind site, approximately 30km north of the Isle of Lewis for a minimum period of 24 months. The deployment took place on 21 September 2024. Post deployment of the FLS and DWR, service activities be carried out onsite at approximately six-monthly intervals. Additional notice will be provided prior to service activities being undertaken.
Installation of scour protection - Turbine position B4
Mariners are advised that cable lay and burial works (Campaign 1, from KP0 to KP56) for the NeuConnect Interconnector have commenced. Works will be conducted by Prysmian PowerLink and supported by their subcontractors.
Due to altered route and survey scope the vessel turning requirements and operational corridor has been decreased in certain locations. This updated NtM reflects these changes.
Please be advised that A-2-Sea Solutions Ltd (on behalf of SHEPD) are undertaking a marine survey within the cable corridors described below. Surveys will utilise two vessels to complete survey operations: FPV Morven Offshore operations will have a planned minimum duration of 28 days, weather permitting. Nearshore operations will have a planned minimum duration of 28 days, weather permitting.
See detailed map on our bulletin website
The Walk to Work vessel, Norside Supporter, will assist the IAC termination and testing works in Dogger Bank A Offshore Wind Farm Array Area
The works are scheduled to be performed continuously. The campaign is envisaged to commence upcoming week and expected to continue for upcoming winter months. The works will be continuous, 24 hours a day.
The operations consist of offshore accommodation and transfer of personnel to the different offshore foundations in place.
During operations, the NORSIDE SUPPORTER 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.
See detailed map on our bulletin websiteCylindrical metal item dropped on the seabed with ground line and rope in the water column. Dimensions: 1m wide, 0.8m long, 0.4m tall. Weight: 50kg. 100m ground line and clump weight attached to metal item. Potential rope of 30-40m length attached to it floating in water column
UXO and boulder clearance works will continue into November using the vessel 'Glomar Wave and DSV Curtis Marshall within the East Anglia 3 (EA3) OWF & ECR. All underwater (Boulder) activities associated with the Glomar Wave are being carried out using WROV. All underwater (UXO Clearance) activities associated with the Curtis Marshall will be carried out using divers. Activities are expected to be complete by end of November.
Mariners are advised that Orsted Hornsea Project Three (UK) Limited will be commencing a scope of UXO inspection works in 2024. The surveys are being undertaken for the purposes of UXO investigations for the Hornsea Project Three Offshore Wind Farm project, located within the UK Sector of the North Sea.
Proposed survey activity:
Explosive Ordance Detonation (EOD) of the confirmed Unexploded Ordance (cUXO) within the Hornsea Project Three export cable route is being undertaken by the 4-Winds in accordance with licence L/2024/00441/1. The EOD works are expected to be completed in March 2025.
Safety:
All vessels are requested to maintain a safe distance of at least 1km during EOD. During the works, a listening watch will be maintained on VHF Channel 12 and 16 when the survey vessel is within the appropriate port authority area and will actively transmit an AIS signal. A four-hour warning will be transmitted via VHF Channel 16 during detonation. The 4-winds will also broadcast at regular daily intervals the vessel position, operational information and intentions.
See detailed map on our bulletin websiteOffshore Construction of the Dogger Bank C Offshore Wind Farm commenced on the 5th of October 2024. The development of the windfarm is made up of several elements - current ongoing elements are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.
There is currently no construction Activity in the DBC construction site
See detailed map on our bulletin website
Offshore Construction of the Dogger Bank B Offshore Wind Farm commenced on the 21st of April 2023 with the installation of the OSP jacket foundation. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project. The intention is to give an overview of activities and vessels involved. Should anyone have questions regarding the operations, we kindly ask you to put them forward well in advance.
Monopile foundation installation works
The Offshore installation vessel, HLV Seaway Strashnov, will install mono-pile foundations in the Dogger Bank B offshore windfarm construction area. The works will commence on the 22nd of April 2024, continuing until approximately Q3 2024. The works will be continuous 24 hours a day. A running list of the installed foundations and next locations are presented in the Weekly Notice of Operations. The installed monopiles will be marked with temporary lighting with the following characteristics:
• Flashing (Fl) Yellow (Y) 2.5 seconds (s) • IALA Availability Category 2 (not less than 99.0%) • 360° visibility – up to two lights per structure may be used to achieve this • At least 2 nm range.
The Offshore Installation Vessel Alfa Lift will install Foundation Transition Pieces onto the monopiles, removing the temporary lighting at the same time. During operations, the HLV Seaway Strashnov and the Alfa Lift 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. During operations, a Statutory Safety zone of 500m radius will be in place around the HLV Seaway Strashnov and the Alfa Lift. The safety zones will be monitored by a guard vessel.
The SOV Wind Evolution will assist with Asset Maintenance works.
During operations, the HLV Seaway Strashnov, Alfa Lift and the Wind Evolution 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.
Dogger Bank B IAC Cable Installation
The Cable Lay Vessel (CLV) Viking Neptun will perform the inter array cable installation works with the commencement around 5th of October 2024. The works will continue over the winter. The vessel will further be assisted by the Walk to Work Vessel Sudri Enabler for the deployment of cable pull in teams. The Grampian Tees will conduct cable termination and testing works following cable lay and pull-in. The Trenching Support vessel (TSV) C-Installer will complete trenching and burial of the installed cables. All works will be continuous, 24 hours a day.
The cable lay vessel will deploy the inter array cable onto the seabed through her dedicated deck spread. The cable will remain exposed on the seabed till trenching works by C-INSTALLER are performed.
During operations, the VIKING NEPTUN, C-INSTALLER, SUDRI ENABLER and GRAMPIAN TEES 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
The SOV IWS SEAWALKER will conduct trials at various locations in DBB
See detailed map on our bulletin website
Offshore Construction of the Dogger Bank A Offshore Wind Farm commenced on the 18th of March 2022. The development of the windfarm is made up of several elements - current ongoing elements are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.
The development of the windfarm is made up of several elements - current ongoing elements include:
Construction Support Activities
The Offshore Construction Support Vessels Edda Boreas, Grampian Tees, Grampian Derwent, Grampian Tyne, IWS Skywalker, and Norside Supporter will carry out construction support activities within Dogger Bank A construction site.
The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately 30th September 2023. The works will be continuous, 24 hours a day.
Wind Turbine Generator (WTG) Installation
The Jack-up WTG Installation Vessel, Voltaire, will install wind turbine generators (WTG) within the Dogger Bank A construction area. the Voltaire has completed scheduled maintenance and has returned to WTG Installation operations.
The works commenced on the 18th of July 2023, continuing until approximately Q4 2024. The works will be continuous, 24 hours a day. A running list of the completed WTG installations and the next locations to be installed is presented in the Installation progress table in the WNoO.
Rock Placement Operations
The fall pipe vessel, Rollingstone, will perform seabed rock installation at various foundation locations in DBA in the next two weeks
During operations, the Rollingstone 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.
See detailed map on our bulletin websiteSpiorad na Mara Ltd deployed an array of metocean equipment, including one floating LiDAR (FLIDAR) buoy, over a period of 24 months, and two Datawell Waverider buoys and one Seabed mooring for 12 months within the Spiorad na Mara offshore wind farm site. An additional seabed mooring has been deployed on site.
Servicing of the equipment is scheduled to take place between the 4th - 7th of November 2024.
See detailed map on our bulletin website
This NtM is an update to the nearshore geotechnical NtM issued on 8 July 2024 pertaining to the ongoing nearshore geotechnical survey for the Eastern Green Link 3 (EGL3) project. The remaining geotechnical operations are due to commence on the 1st November 2024, although this is weather dependent and are anticipated to take two weeks to complete.
This survey will be undertaking Geotechnical operations (CPTs) within the area defined. EGL3 believes this work will take two weeks to complete, although this is weather dependent.
The nearshore geotechnical survey works are being carried out by Next Geo Solutions using the following vessel:
Survey vessel: NG Driller (IMO 9420186;MMSI 247452300; Call Sign ICEA).
Vessels and their contact details are given in Table 1 in the attached NtM.
Vessels are requested to pass at a safe speed and distance, approximately 550m from the areas identified. During these works the survey vessel will have restricted manoeuvrability as it completes its work scope.
See detailed map on our bulletin websiteThis updated Notice to Mariners (NtM) is related to the Landfall Preparation Works for the NeuConnect Interconnector. Installation works are now complete between KP 0.4 (51°27.9768'N 000°42.9291'E) and KP 2 (51°28.6756'N 000°43.7398'E). Due to restrictions of tide and weather windows, all operations are anticipated to require 24-hour working. A post-landing survey to define the scope of remedial works will be undertaken following cable landing operations, commencing from the 23 October 2024.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the Clyde marine areas.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the Clyde 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 vessels conducting these works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes.
Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (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.
See detailed map on our bulletin websiteConducting an offshore cable route geophysical survey for the proposed Morven Windfarm.
Survey will consist of geophysical data collection from towed sensos operated by Uncrewed Surface Vessels (USVs). Survey continuing through all of October when weather allows. Upto 4 vessels will be operational at any one time during this period. The USVs will be operating out of both Eyemouth and Scarborough Harbours. A crewed Support Vessel will be based in these ports at all times to assist the USVs in escorting in out of the harbour in an emergency. The USVs, although uncrewed, are remotely controled at all times and are equipped with cameras, AIS, radar along with other situational awareness sensors. A closest point of approach of 0.5nm should be maintained with the USV at all times.
See detailed map on our bulletin websiteMariners are advised that vessel "Rockpiper" is due to commence Scour Protection installation operations within the East Anglia Three Offshore Windfarm, circa 5th November 2024. Operations will be conducted by Seaway 7/Boskalis with the main working area being inside the Offshore Windfarm Array.
Installation of scour protection by fallpipe vessel "Rockpiper" at the WTG and OFCS foundation locations within the offshore wind farm site, preventing removal of sediment around the base of structures once they have been installed.
During the period of scour protection installation works, vessels are advised to navigate with caution and are requested to keep a 500m safety distance from all offshore construction vessels.
See detailed map on our bulletin websitePlease be advised that confirmed Unexploded Ordinance has been identified at the following locations. In the interim period prior to disposal, all vessels are advised to stay clear of locations. Please see attached notice to mariners for further information regarding exclusion zones.
Multibeam and Side Scan Sonar survey to identify exposed cables and free spans on the London Array OWF export cable route.
The Wind Turbine Installation Vessel 'Aeolus' continues with Foundation Installation Works within the array site. The finish date will be dependent on the prevailing weather conditions and work progress.
Foundation Installation Works (Aeolus)
The Aeolus has commenced the Offshore Foundation Transport and Installation works within the Sofia Offshore Wind Farm Array. These works include the transport and installation operations of primary components, namely Monopiles, and secondary components, namely Main Access Platforms, Internal Platforms, Boat Landings and Upper Ladders.
Vessels will be transiting to Sofia Offshore Wind Farm field from the Port of Tyne in the UK.
The following table highlights foundation installation progress and next 7 day forecast.
Total Foundations Installed (100 in Total) |
Foundations Installed Last 7 Days / (Date Fully Installed) | Foundation Installation Next 7 Day Forecast |
34 |
2 (L05 - 22nd October 2024) (Q11 - 26th October 2024) |
4 - (S01, R01) |
The Sofia Offshore Wind Farm Exclusion Zone coordinates, are shown below and included within the relevant NtM. Mariners are requested to remain outside this Exclusion Zone.
Vessels are requested to pass at a safe speed and distance and fishing vessels are advised to remain outside of the areas identified.
Service Operation Vessels
The Service Operations Vessel (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to support to the SOWF project throughout the construction of the offshore windfarm.
SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.
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.
Guard Vessels & Crew Transfer Vessels
While in operation, the guard vessel 'Defender' will be present in the field in close proximity for guarding the cable lay vessel (Calypso) and SOV vessels (Acta Orion & Acta Auriga) when active in the operation.
The Guard Vessel 'Accord' is also expected to commence operations during October 2024.
The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.
The Crew Transfer Vessel (CTV) ‘Maintainer’ is expected to commence operations infield and will be supporting Van Oord with infield personnel transfers and cargo runs between the Port of Blyth to the offshore array.
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websiteAll Mariners are advised that Partrac Ltd using “Green Isle” continues with a service inspection of the Sofia Offshore Wind Farm met-ocean buoys within the Sofia Array as well as the Export Cable route. Mariners are requested to refrain from entering and transiting through the construction area as demarcated by these demarcation buoys.
An additional met-ocean buoy will be installed at KP180 along the export cable route at a later date.
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.
Buoy | ID | Latitude | Longitude | Lantern Characteristics | Lantern Colour |
North Cardinal | N1 | 55° 08.133’ N | 002° 09.518' E |
VQ 0.5s |
White |
North Cardinal | N2 | 55° 08.436’ N | 002° 13.418’ E |
Q 1s |
White |
East Cardinal | E1 | 55° 06.480’ N | 002° 16.929’ E |
Q(3) 10s |
White |
East Cardinal | E2 | 55° 02.571’ N | 002° 23.925' E |
VQ(3) 5s |
White |
East Cardinal | E3 | 54° 59.043’ N | 002° 30.269’ E |
Q(3) 10s |
White |
East Cardinal | E4 | 54° 55.085’ N | 002° 26.631’ E |
VQ(3) 5s |
White |
East Cardinal | E5 | 54° 51.523’ N | 002° 20.709' E |
Q(3) 10s |
White |
South Cardinal | S1 | 54° 49.725’ N | 002° 16.726' E |
Q(6) + LFL 15s |
White |
West Cardinal | W1 | 54° 51.829’ N | 002° 12.194' E |
Q(9) 15s |
White |
West Cardinal | W2 | 54° 56.229’ N | 002° 03.867' E |
VQ(9) 10s |
White |
West Cardinal | W3 | 55° 00.623’ N | 001° 56.196' E |
Q(9) 15s |
White |
West Cardinal | W4 | 55° 04.648’ N | 002° 02.498' E |
VQ(9) 10s |
White |
Special Mark | SP1 | 55° 02.741’ N | 001° 59.265' E |
FI Y 5s |
Yellow |
Special Mark | SP2 | 55° 06.569’ N | 002° 05.756' E |
FI Y 5s |
Yellow |
Special Mark | SP3 | 55° 04.525’ N | 002° 20.428' E |
FI Y 5s |
Yellow |
Special Mark | SP4 | 55° 00.617’ N | 002° 27.418' E |
FI Y 5s |
Yellow |
Special Mark | SP5 | 54° 56.871’ N | 002° 29.602' E |
FI Y 5s |
Yellow |
Special Mark | SP6 | 54° 53.324’ N | 002° 23.621' E |
FI Y 5s |
Yellow |
Special Mark | SP7 | 54° 54.030’ N | 002° 08.026' E |
FI Y 5s |
Yellow |
Special Mark | SP8 | 54° 58.427’ N | 001° 59.703' E |
FI Y 5s |
Yellow |
The table below provides a summary of the Met-ocean Buoys deployed at the SOWF Array.
Site Location | Buoy Position | Latitude | Longitude | Deployment Date | Recovery Date |
Export Cable | KP8 | 54 36.584N | 000 54.674W | June 2023 | Will remain in position until further notice |
Export Cable | KP130 | 54 50.543N | 000 54.689E | June 2023 | Will remain in position until further notice |
Export Cable | KP180 | 54 51.740N | 001 41.110E | TBC | TBC |
SOWF | Array North | 55° 05.392' N | 002° 12.993' E | June 2023 | June 2026 |
SOWF | Array South | 54° 54.987' N | 002° 15.585' E | June 2023 | June 2026 |
SOWF | Array East | 54° 58.160' N | 002° 22.521' E | March 2024 | June 2026 |
SOWF | Array West | 55° 01.528' N | 002° 04.052' E | March 2024 | June 2026 |
SOWF | OCP | 55° 00.439' N | 002° 14.798' E | March 2024 | June 2026 |
See detailed map on our bulletin website
Please be advised that during a recent routine inspection of the Aberdeen Offshore Windfarm, the following lighting issues have been identified.
Please be advised that during a recent routine inspection of the Aberdeen Offshore Windfarm, the following lighting issues have been identified:
LAT 57° 13.809' - N 1° 58.450' W
Please be assured that we are working to rectify these defects as soon as weather conditions and operational schedules permit. We will provide an update once the repairs have been successfully completed.
Should you have any questions or require further information, please do not hesitate to contact us.
See detailed map on our bulletin websiteActivities related to the development of the Triton Knoll wind farm continue, as detailed below. For background information visit: http://www.tritonknoll.co.uk. Mariners are advised that the asset installation phase of the Triton Knoll OWF is now complete.
Mariners are advised that the following vessels will be arriving at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined within previously issued NtM's:
The MJM Enterprise is expected to commence operations at Triton Knoll Offshore Wind Farm, for work along the export cable route. The Vessel will work approx. 4km from the coast, working inwards towards the shore as far as practicable using a Geolink, which will be hard towed from the frame positioned aft on the vessel. The Geolink will be maintained at a distance of approximately 3 – 4m from the Seabed during the survey period. The Survey essentially requires two tide periods, so the duration of this survey will be potentially 24 Hrs, weather dependant. Please give a 500m clearance to the vessel whilst she is working in this area.
Vessel Name |
Type |
Call Sign |
MMSI |
IMO |
Operating Port |
Commence Date |
MJM Enterprise | Research Vessel | MPAL7 | 232054596 | 1062536 | Hartlepool | 06/11/2024 |
Mariners are advised that the following vessels continue to be active at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined within previously issued NtM's:
The Cardinal P will be conducting a short seabed survey following Rock Dumping operations. Commencement date is approximate and dependant on weather. Work is expected to last around 6 Hours and will be performed by ROV deployment around the following location: 53° 27.04' N 0° 53.38' E
All vessels can be contacted via VHF channel 16 when operational in field.
*** Note ***
All 90 WTG's have now been fully installed, whilst WTG commissioning and service continues. All Export Cables are fully installed/buried and need to be deemed live/energised. All Inter Array Cables are fully installed and buried and need to be deemed live/energised. Whilst the main installation works have been completed, major construction commissioning works are continuing.
*** Note ***
Whilst TKOWFL is reopening the site to fishing from the 14th December 2021, TKOWFL kindly request that all fishermen intending to fish within the boundaries of the Triton Knoll wind farm, contact the Triton Knoll control room prior to entering and exiting the field, and inform them of their fishing intentions.
This precaution is requested to safeguard all vessels operational at the TKOWF site (including fishing vessels) and your cooperation, to ensure the safety of all parties is appreciated. The following contact details should be used when notifying the Triton Knoll control room of fishing activity:
Control Room Manager: Derek Whyte Radio: VHF channel 16 Callsign: TK MCC Phone: +44 1793 896250 Email: tkcr@rwe.com *** Note ***
Application of Triton Knoll Wind Farm Safety Zones During Construction The Secretary of State has granted the Application of Safety Zones on the Triton Knoll Wind Farm Project as follows:
|
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.
Description of Target | Latitude | Longitude |
Water Depth (LAT) Metres |
Required Exclusion Zone (Metres Radius) |
Archaeological - The item is thought to be an air-delivered bomb. It appears to be in a stable condition and is resting on the seabed. Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. | 53°31'50.249"N | 00°47'45.908"E | 20 | 10 |
Archaeological - The item is thought to be an air-delivered bomb. It appears to be in a stable condition and is resting on the seabed. Marine growth and concretion cover the body, indicating it has been in situ for a significant duration. The tail section of the bomb is missing, which is typical of unexploded bombs from WWII found in these circumstances and there is a significant hole in the case. The dimensions and characteristics gathered are consistent with a 500kg German bomb. Considering the state of the bomb the Net Explosive Quantity of the bomb is likely to be <5kg. | 53°31'49.895"N | 00°47'45.115"E | 20 |
10 |
On behalf of Dogger Bank Windfarm, NKT have carried out nearshore intervention works in support of the installation on the Dogger Bank C Export Cable in the Dogger Bank C Export Cable Corridor. The survey vessel MV Elysse will conduct some additional multi-beam echosounder surveys (MBES) of the seabed for approximately another week of work.
Equipped on a side-mounted pole extended into the water, the MV Elysse will make several passes at reduced speed over the area. The MV Elysse will transit to the work site from the Port of Hartlepool periodically throughout the project. During operations, the MV Elysse 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 give the MV Elysse a wide berth and pass at reduced speed when the vessel is engaged in survey activities. The vessel will monitor VHF CH16 and VHF DSC Ch70 continuously throughout.
See detailed map on our bulletin websiteMariners are advised that the Glomar Wave is due to commence Boulder Clearance Operations within EAST ANGLIA THREE Offshore windfarm.The wWorks are due to commence Circa 1st November 2024.Operations will be conducted by Seaway 7 and the main working area will be inside of the offshore wind farm Arrway as per Section 2.1.
Relocation of Boulders and non Geological Debris in areas of installation in the offshore windfarm site.(WTG IAC OFCS EC) is a critical pre construction activity to reduce significant health and safety risks to the construction phase.Boulders will be moved by designated relocation zones.
See detailed map on our bulletin websitePlease be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence major component repairs on nine (9) Wind Turbine Generators (WTGs). These activities will be undertaken using the Jack-up vessel Seaway Ventus. Activities are expected to take place between 04/10/2024 and 06/11/2024.
Please be aware that, during the major repair activities, by virtue of its mode of operation the Jack-up vessel 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 Seaway Ventus and their crew, and the ability to undertake its contracted works, fishermen who have static fishing gears deployed within 500 m from the WTG where major repairs are planned 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- lostgear#marking-of-fishing-gear).
The Scottish Ministers have authorised the establishment of a 500-metre radius safety zone around all major maintenance works being undertaken. The safety zones will be active when the jack-up vessel involved in undertaking major maintenance works is attached to, or anchored next to, the renewable energy installation. No more than one 500 metre major maintenance safety zone will be active at any given time.
All mariners are requested to give a wide berth to all vessels involved in the major repair activities.
Mariners are requested to navigate with caution, to use all means appropriate to aid safe navigation as defined under COLREGs Rule 7, and keep continued watch on VHF Ch. 16, 87 and 73 when navigating the area.
See detailed map on our bulletin websiteThe two floating LiDAR buoys currently deployed on the Morven offshore wind farm site at locations referred to as Morven North and Morven South are now due for recovery, having completed the measurement campaign.
The two floating LiDAR buoys currently deployed on the Morven offshore wind farm site at locations referred to as Morven North and Morven South are now due for recovery, having completed the measurement campaign.
These works will be undertaken at the next available window of weather and vessel availability. The buoys and full moorings will be recovered from the site and returned to shore as part of these operations.
Until this recovery is completed, and while the service vessel is operating on site, marine users are requested to maintain the safe clearance distances as outlined in Section 4 of the attached NtM.
Details of the surface present devices and relevant aids to navigation are provided below. Mooring diagrams for all instrumentation are provided in Section 8 of the attached NtM.
See detailed map on our bulletin websitePartrac, on behalf of The Crown Estate, is planning scheduled servicing of the array of Metocean equipment deployed within three Project Development Areas (PDAs) located off the coast of Wales and Southwest England. The equipment (including three floating LiDAR buoys) was deployed between 09th and 10th May 2024. The equipment will remain deployed for a period of at least 9-months after the servicing is complete.
Mariners are advised that Partrac, on behalf of The Crown Estate, is planning scheduled servicing of the array of Metocean equipment deployed within three Project Development Areas (PDAs) located off the coast of Wales and Southwest England (Table 1, Figure 1 to Figure 3). The equipment (including three floating LiDAR buoys) was deployed between 09th and 10th May 2024. The equipment will remain deployed for a period of at least 9-months after the servicing is complete.
Partrac plans to conduct service works on the following moorings:
Work is expected to commence from 3rd November over an estimated period of 2 days, weather permitting, vessel TBD.
See detailed map on our bulletin website
Please be advised from circa 1st November 2024 East Anglia Three Offshore Windfarm construction works will commence, subsea boulder and debris clearance operations will be the first construction activity as per the attached NTM document. Followed by Scour protection Installation circa 05th November 2024 as per NTM 050 in attachment.
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.
See detailed map on our bulletin websiteGeotechnical Site Investigation of the Caledonia Offshore Wind Farm's Offshore Export Cable Corridor
The Caledonia Offshore Wind Farm will be undertaking a geotechnical survey campaign within the proposed offshore export cable corridor (OECC). The OECC adjoins the site located in the Moray Firth, to the Aberdeenshire coast. The activity commenced on the 7th of August 2024 with the vessel Armada 7803. As of the 30th of October 2024, the vessel Ross Eagle will be undertaking the work, due to be completed by the 31st of December 2024.
Mariners are advised to keep a safe distance of 500m from the vessel.
Works consist of:
The Cable Lay Vessel “Leonardo Da Vinci” continues with the cable jointing and simultaneous lay / bury operations within the Sofia Offshore Export Cable Corridor. The exact finish date will be dependent on the prevailing weather conditions and work progress. The vessel will be supported by the Guard Vessels “Gleaner” & “Phoenix”.
Cable Lay, Plough and Jointing
Campaign 2 of the Cable lay and plough works will take place from KP130 to KP222 (the OCP). The cable jointing works, and cable lay and plough operations will take place from approximately 5th October for a duration of approximately 5 weeks. This duration will be weather dependant.
Cable Pull-In
Cable pull-in and support works at the Offshore Converter Platform (KP222) will also take place using the cable lay vessel (CLV) “Leonardo Da Vinci”. This will take place from approximately 15th November for a duration of 15 days. This will take place within the wind farm area, at the OCP. This duration will be weather dependant.
Cable Lay Vessel and Support Guard Vessels & CTV
The Leonardo Da Vinci will be present for the entire scope of works. The Leonardo Da Vinci will transit from Middlesborough support depot or transit directly from Nordernham (Germany) Factory to site. 24hr operations will be undertaken for simultaneous cable lay and burial. The CLV will make passage to and from the support depot as required based on operational constraints. Since the cable will be simultaneously installed and buried with the plough the use of Guard Vessels will be reduced.
The CLV will be supported by 2 guard vessels (Gleaner and Phoenix) that will cover the section where the joint has been deployed (KP 130) and the section with the crossings (KP163.5-165.5). The guard vessels will be onsite 24 hours per day, returning to North Shields based on operational requirements.
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
Vessel Name | Vessel Type | Length | Beam | Draft | Gross Tonnage | Call Sign | MMSI Number |
Gleaner | Guard Vessel | 23.9m | 6.71m | 3m | 184T | MGGH9 | 233296000 |
Phoenix | Guard Vessel | 24.2m | 7.3m | 4.2m | 237T | MJMB2 | 2350013120 |
Star of Faith | Guard Vessel | 17.0m | - | 3.5m | - | MMSL | 234903000 |
Rix Cheetah | Crew Transfer Vessel | 25.0m | - | 1.8m | - | 2GGY7 | 235097312 |
Exclusion zone coordinates for the 2024 cable lay and plough, jointing and pull-in works are identified within table above as well as an additional table showing the coordinates of the guard vessel locations supporting Campaign 2.
Please be aware that by virtue of mode of operation and the equipment deployed, the Leonardo da Vinci will at times be Restricted in their Ability to Manoeuvre as defined under COLREGS (International Regulations for Preventing Collisions at Sea 1972, Rule 3).
Mariners are requested to remain where possible 500m from vessels and equipment. Fishing vessels are requested to pass at a safe speed and distance and remain outside of the exclusion area identified. During these works the Leonardo Da Vinci (CLV) will have restricted manoeuvrability as it carries out the cable pull-in and lay works. All vessels can be contacted on VHF 16 for further information as required reference proximity/nearby operations etc.
Vessels will be monitoring channel VHF 16 and shall also be exhibiting the correct day shapes/lights and flag for vessels restricted in ability to manoeuvre.
See detailed map on our bulletin websiteThe Jack Up Vessel “Seafox 2” is positioned alongside the Sofia OCP and is jacked to working height supporting the commissioning element of the works.
A regular service of Platform Supply Vessels commenced 8th September 2024 providing supplies to the Offshore Converter Platform & JUV Seafox 2 until further notice. Those nominated vessels are:
An eight legged jacket with 8 driven pin piles has been installed as a foundation for the OCP followed by the OCP itself.
All vessels will be arriving from non UK Ports throughout.
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.
The As Laid Coordinates of the anchors are also provided below.
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 EERVs Putford Viking, Putford Achates and Putford Ajax are supporting the commissioning phase of the Offshore Converter Platform, providing close standby cover as required during overside works.
Only one of the three nominated vessels will be on location at any one time.
Service Operation Vessels
The Service Operations Vessel (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to support the SOWF project throughout the construction of the offshore windfarm.
SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.
Guard Vessels & Crew Transfer Vessel
While in operation, the guard vessel 'Defender' will be present in the field in close proximity for guarding the cable lay vessel (Calypso) and SOV vessels (Acta Orion & Acta Auriga) when active in the operation.
The Guard Vessel 'Accord' is also expected to commence operations during October 2024.
The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websiteThe Subsea Viking continues supporting the Inter Array Cable Installation works as required.
The table below provides the coordinates of the total working area of works to be undertaken by the Subsea Viking.
The vessel shall be transiting to / from the Sofia Array from the Port of Blyth throughout this period.
Vessels are requested to leave a wide berth during the installation operations of at least 0.5 Nautical Miles.
The length of Subsea Viking activities will vary depending on the execution progress, and details of any changes will be confirmed in further Notice to Mariners to be issued during the course of the project.
Mariners should be aware that some aspects of the work may result in a temporary reduction in navigable depth greater than 5%. Once installed, the cable protection system stabilisation is expected to have a reduction in navigable depth greater than 5%, localised in close proximity to the WTG.
The Subsea Viking shall be exhibiting the correct day shapes and night lights for a vessel restricted in ability to manoeuvre. The vessel will be operating 24 hours per day.
Service Operation Vessels
The Service Operations Vessel (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to provide support to the SOWF project throughout the construction of the offshore windfarm.
SOVs continue to support Inter Array Cable works.
SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.
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.
Guard Vessels & Crew Transfer Vessels
While in operation, the guard vessel 'Defender' continues to support and guard the cable lay vessel (Calypso) and SOV vessels (Acta Orion & Acta Auriga) when active in the operation.
The Guard Vessel 'Accord' is also expected to commence operations during October 2024.
The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websiteThe Cable Laying Vessel (CLV) “Calypso” continues with Inter-Array Cable operations within the Sofia Offshore Windfarm Array.
The vessel shall be transiting to / from the Sofia Array and the ports of Blyth & Sunderland throughout this period.
The exact finish date will be dependent on the prevailing weather conditions and work progress.
Mariners are requested to remain where possible 500m from Calypso. During these works, Calypso will have restricted manoeuvrability and shall also be exhibiting the correct day shapes/ lights.
The Calypso can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
Service Operation Vessels
The Service Operations Vessel (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to support to the SOWF project throughout the construction of the offshore windfarm.
SOVs continue to support Inter Array Cable works.
SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.
Guard Vessels & Crew Transfer Vessels
While in operation, the guard vessel 'Defender' will be present in the field in close proximity for guarding the cable lay vessel (Calypso) and SOV vessels (Acta Orion & Acta Auriga) when active in the operation.
The Guard Vessel 'Accord' is also expected to commence operations during October 2024.
The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.
The Crew Transfer Vessel (CTV) ‘Maintainer’ is expected to commence operations and will be supporting Van Oord with infield personnel transfers and cargo runs between the Port of Blyth to the offshore array.
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websiteAll Mariners are advised that the Cable Burial vessel Normand Pacific continued and completed until further notice with Post Cable Lay Burial Works within the Sofia Export Cable Corridor KP3 – KP90. The exact finish dates will be dependent on the prevailing weather conditions and work progress.
The post-lay burial (PLB) vessel “Normand Pacific” will be present for the entire scope of works. The Normand Pacific will transit from Middlesborough Support Depot and remain on site for 24hr operations. The PLB vessel will make passage to and from the support depot as required based on operational constraints.
The PLB will be supported by those guard vessels outlined in the table below. Guard vessels will remain be onsite 24 hours per day to monitor the export cable until approximately the end of Q4 - 2024.
Exclusion zone coordinates for the post-lay burial works are identified within the table below.
The following table highlights zonal areas where guard vessels are patrolling and guarding the campaign 1 export cable.
Guard Vessel | KP Start & Position | KP End | Approx Start Position | Approx End Position |
GA1 |
KP1 |
23.5 |
54 36.29N x 001 01.04W | 54 37.89N x 000 40.12W |
GA2 | 23.5 | 53.8 | 54 37.89N x 000 40.12W | 54 41.83N x 000 13.90W |
GA3 | 57.6 | 89.5 | 54 42.59N x 000 10.44W | 54 45.68N x 000 18.58E |
Please be aware that by virtue of mode of operation and the equipment deployed, the Normand Pacific will at times be Restricted in their Ability to Manoeuvre as defined under COLREGS (International Regulations for Preventing Collisions at Sea 1972 and shall be exhibiting the correct day shapes / lights for vessels restricted in ability to manoeuvre.
Mariners are requested to remain where possible 500m from vessels and equipment. Fishing vessels are requested to pass at a safe speed and distance and remain outside of the exclusion area identified. All vessels can be contacted on VHF 16 for further information as required reference proximity/nearby operations etc.
Mariners are advised of the following vessels operating at the Sofia Offshore Wind Farm (SOWF).
Vessel Name | Vessel Type | Length (m) | Beam (m) | Draft (m) | Gross Tonnage (T) | Call Sign | MMSI Number |
Normand Pacific | Post-Lay Cable Burial Vessel | 122 | 23 | 7.0 | 9778T | LAXI7 | 257743000 |
Sancta Maria | Guard Vessel | 20.37 | 6 | 3.03 | 106 | 2FOV7 | 235093015 |
Dolfijn | Guard Vessel | 27 | 6.2 | 3.1 | 99 | YJQL8 | 576697000 |
Walvis | Guard Vessel | 27 | 6.4 | 3.32 | 108 | YJQG3 | 576448000 |
Haulbowline | Guard Vessel | 22.3 | 7 | 2.7 | 88 | MEZW9 | 232021354 |
Star of Hope | Guard Vessel | 23.9 | 7.2 | 3.4 | 101 | MKDN2 | 232038483 |
Merlin Diver | Guard Vessel | 24.99 | 6.18 | 3.8 | 88 | YJQG4 | 576451000 |
Enterprise II | Guard / Scout Vessel | 26 | 9.2 | 4.7 | 421 | MPFN7 | 232006130 |
Star of Faith | Guard Vessel | 17.0m | - | 3.5m | - | MMSL | 234903000 |
Rix Cheetah | Crew Transfer Vessel | 25.0m | - | 1.8m | - | 2GGY7 | 235097312 |
The Guard Vessel 'Star of Faith' and Crew Transfer Vessel 'Rix Cheetah' will provide support services as required from around week commencing 4th November 2024. Both vessels shall be operating from UK East Coast Ports as required.
See detailed map on our bulletin websiteThe MachairWind Floating LiDAR buoy will be serviced during the next available weather window. While the Floating LiDAR buoy is serviced, a temporary marker will be deployed. The temporary marker will have a light, but will not transmit AIS. The Bommelbas (Call Sign: LLGZ) will be used for maintenance activities. Mariners are requested to maintain a distance of 500 metres from the Floating LiDAR buoy and vessel.
The Floating LiDAR buoy is tethered to the seabed with a single mooring line. The Floating LiDAR buoy has light marking characteristics comprising FI (5) Y 20s with a nominal range of 5 nautical miles in addition to transmitting its locations via AIS.
The Bommelbas will temporarily remove the Floating LiDAR buoy for servicing. A temporary marker buoy will be deployed in its place whilst maintenance activities are being undertaken. The Floating LiDAR buoy will be redeployed at Site 1 (shown on the figure below) once maintenance activities are completed. A revision of this notice to mariners will be distributed providing confirmation of the redeployment coordinates for the Floating LiDAR buoy.
See detailed map on our bulletin websiteMariners are advised that a nearshore and offshore marine benthic and geotechnical survey (sampling campaign) is planned for the Sea Link project along the planned Sea Link cable route corridor between the Suffolk approaches, and the Outer Pegwell Bay, Ramsgate, Kent. The marine survey activities are planned to commence mid October and extend throughout late October depending on weather conditions.
Mariners are advised that a nearshore and offshore marine benthic and geotechnical survey (sampling campaign) is planned for the Sea Link project along the planned Sea Link cable route corridor between the Suffolk approaches, and the Outer Pegwell Bay, Ramsgate, Kent
The marine survey activities are planned to commence 26th October and extend throughout to approximately the 9th October, depending on weather conditions.
About Sea Link – National Grid Electricity Transmission is proposing to reinforce the transmission network between Suffolk and Kent via a new, primarily offshore, cable link. More information about the Sea Link project can be found on their website: https://www.nationalgrid.com/electricity-transmission/network-and-infrastructure/infrastructure-projects/sealink/about-sea-link
The Sea Link nearshore and offshore geotechnical survey works are being carried out by Next GeoSolutions onboard the NG DRILLER.
The specific areas of work and sample locations, pertaining to this Notice to Mariners (NtM) , are shown in more detail in Figures 2, 3 and 4 of the attached document.
The benthic sampling, utilising grab sampling and a drop-down video (DDV) camera was completed by the Ievoli Grey in September. The Geotechnical sampling utilising a Cone Penetrometer system (CPT) and a Vibrocore (VC) system will be perfromed from the NG Driller within October.
NG DRILLER | |
Call Sign |
ICEA |
IMO |
9420186 |
MMSI |
247452300 |
All vessels shall pass at a safe speed and distance, whilst fishing vessels are asked to remain at a safe distance (approximately 500 metres where possible) (COLREGs Rule 16 & 18) from the areas identified during marine sampling operations. The survey vessel will monitor VHF Channel 16 at all times.
See detailed map on our bulletin website1x Floating LiDAR buoy with co-located wave rider buoy and seabed mounted current mooring
Mariners should be aware that from week commencing 4th November 2024 works begin on the installation of a single tidal turbine in the Sound of Islay. Mariners are asked to stay clear of construction vessels and any temporary works during this time.
The Sound of Islay tidal turbine will be a single, mid water column in-flow turbine. The turbine will operate at varying depths and across the Turbine Operating Area as defined below. The clearance between the sea surface and the turbine will not reduce below 3.5m at any time. Once operational the turbine will be marked by a virtual AIS AtoN ‘located’ approximately 25m to the east of the turbine, this will be broadcast to vessels as a virtual East Cardinal Mark. There will be no physical markers.
A power cable will run along the seabed from the turbine to the shore following the route as per 'Cable Route' below.
See detailed map on our bulletin websiteShefa-2 Segment 7 cable breaks occurred October 2022 and May 2023. The Post Repair Inspection revealed that, due to rocky seabed, cable burial is not possible and other cable protection measures are being evaluated. Hence, a section of 2600m cable is exposed to seabed and poses a high risk to fishing activity. Please pay attention to this section of wet stored cable which is sensitive to any external impacts and constitutes a snagging risk for fishing, anchoring or other seabed equipment.
Shefa-2 Segment 7 cable break has been repaired and the Post Repair Inspection and Burial (PRIB) now completed. Hence, minor sections of wet stored cable are sensitive to any external impacts and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.
All Mariners are advised that on or around 1st November 2024 a site borehole drilling campaign is expected to commence at the Sofia Offshore Wind Farm (commencement date subject to change).
The campaign will be carried out by one of three nominated vessels, namely:
The nominated vessel shall either be arriving from the UKCS or from ports of Lowestoft / Great Yarmouth and can be contacted on VHF 16 throughout as required.
See detailed map on our bulletin website1x Floating LiDAR buoy, 1x wave rider buoy & 1x seabed mounted current mooring
The trenching support vessel, Grand Canyon III, will perform post-lay burial works on section 1 (KP0 – KP91.5) and section 3 (KP175 – KP255) of the Dogger Bank C export cable route in the Southern North Sea
Post-lay burial operations will be undertaken throughout the full extent of the export cable, except for un-trenchable areas such as existing third-party crossing locations and inline joint location, or where ground conditions are unsuitable for trenching.
The work will mobilize 01 November 2024 until 31 January 2025. Work will be performed within the Export Cable (EC) route and will be continuous, 24 hours a day.
During post-lay burial operations, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. Grand Canyon III will be restricted in its ability to maneuver 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.
In the period between cable lay operation until the cable has been permanently protected by means of burial or rock placement, the cable may be locally exposed on the seafloor and the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.
To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM LF700013-ESI-DOG-NOT-0008). The primary purpose of the guard vessels is to protect the exposed cable along the Dogger Bank C Export Cable corridor by monitoring and issuing warnings to marine traffic operating within 6Nm of the construction area with a Closest Point of Approach (CPA) < 1.5Nm
See detailed map on our bulletin websiteThe Geotechnical and Benthic survey works are being undertaken by the vessels Ievoli Grey, NG Driller and Viking Energy, OCM 80 MARINER. Operations are planned to commence operations in the survey area on or around 28 August 2024. During the survey works the vessels will be moving from one geotechnical and benthic sampling location to the next. All vessels are requested to remain 0.5 km clear as the vessel will be deploying geotechnical systems in the water as part of standard operations.
Scope |
Vessels |
Comment |
Marine Geotechnical surveys Nearshore |
Viking Energy |
Completed |
Marine Geotechnical surveys Nearshore | OCM 80 Mariner | October -November 2024 |
Marine Geotechnical surveys offshore |
Ievoli Grey |
Completed |
Marine Geotechnical surveys offshore |
NG Driller |
November -December 2024 |
See detailed map on our bulletin website
Galloper Windfarm Geophysical Survey by CTV Spectrum 1 - version 2 - date updated to commence 26/10/24
Dogger Bank Offshore Windfarm is being developed in 3 phases – Dogger Bank A (DBA), Dogger Bank B (DBB) and Dogger Bank C (DBC), located off the North-east coast of England in the Southern North Sea
Mariners are advised of potential floating debris in the vicinity of the Dogger Bank A offshore wind farm array area. Any sightings of floating debris should be reported to the Duty Marine Coordinator.
See detailed map on our bulletin websiteNotice of Potential Temporary Navigational Hazard. Mariners are advised that a potential temporary navigation hazard exists within the Seagreen export cable corridor at the coordinates and locations. This potential temporary hazard is 1.5 KM from the Seagreen export cable landfall site at Carnoustie, Angus.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking a subsea inspection of a cable in the West Highlands.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking a subsea inspection of a cable in the West Highlands.
A range of vessels will be available for the project.The inspection works will be centred on a 50m cable corridor.
LOCATION DETAILS
The cable location and indicative survey corridor is noted below for information. Equipment calibration operations may take place out with the defined corridor and these areas will be chosen so as not to interfere with fishing / marine traffic activity.
VESSEL DETAILS
The vessels conducting these works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (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.
See detailed map on our bulletin websitePlease be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the West Highlands and Argyll marine areas.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the West Highlands and Argyll 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.
LOCATION DETAILS
Cable location and indicative survey corridors are noted in the attached NtM for information. Equipment calibration operations may take place out with the defined corridor and these areas will be chosen so as not to interfere with fishing / marine traffic activity.
VESSEL DETAILS
The vessels conducting these works will be restricted in their ability to manoeuvre and will display the appropriate lights and shapes. Other vessels are requested to pass at a safe speed and provide a minimum clearance of 500m (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 this NtM.
See detailed map on our bulletin websitePlease be advised of this notice advising mariners of the site investigation survey of the Five Estuaries windfarm. The Elisa will be deploying one floating LiDAR buoy and up to two supporting buoys at a maximum of two locations within the area shown. The anticipated starting date within the UK sector late October early November 2024 and is expected to take 1 day for deployment of the equipment. The equipment is to remain at the location for 12 months, subject to weather and additional scopes.
RWE Renewables Ltd is deploying the LiDAR buoy to assist in the site investigations in relation to the installation of the offshore WTG’s for the future Five Estuaries windfarm. The buoy is collecting a minimum of 12 months of data, with a full recovery of all equipment at the end of the data collection. The mooring will be via a steel or concrete gravity anchor and a single line rise, not exceeding 9m2 seabed footprint or 20,000 kg. The maximum drift radius is 163m in Extreme conditions. The LiDAR buoy will exhibit navigational lighting as directed by Trinity House and transmit AIS. The Elisa shall be conducting operations, and the works are expected to be 1 day for deployment. The work will consist within the boundaries of the offshore wind farm site. We kindly ask that all vessels in the local vicinity are aware the 500m safety zone around operations. This is designed to avoid possible interactions and ensure safety of all vessels. It is requested that anyone having knowledge of any potential objects submerged or moored on the seabed within the survey area that could be damaged or form and hazard to the survey vessels and their equipment advises the Fisheries Liaison of their position and nature to help aid the survey operations. The extents of the boundaries are in the attached NTM.
See detailed map on our bulletin websiteActivity: Operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of Hartlepool commencing early October, continuing until the end of December 2024. The vessels will be engaged in geophysical survey activities associated in the North Sea.
Activity: Operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of Hartlepool commencing early October, continuing until the end of December 2024. The vessels will be engaged in geophysical survey activities associated in the North Sea.
Dates: Operations will take place subject to weather and other operational factors from 14 th October 2024 until the end of December 2024.
Mothership: The USV(s) will be launched from a mothership to conduct survey operations. The USVs will be loaded onto the deck of the mothership, launched for survey operations within the site boundary and recovered back onto the mothership once each mission is complete. While the USV is engaged in survey operations the mothership may transit back to port or standby offshore depending on operational need. The mothership used for this project is the Haltbakk Star (figure 3).
Although the USVs are uncrewed, it is piloted remotely throughout the 24 hour operation, using 360 degree cameras and other navigational aids. Figure 1 below indicates the operational area. The survey area boundary is indicated in Table 1 below also. In addition to the survey area, the mothership will transit from Hartlepool to site.
Fisheries Liaison for this survey will be co-ordinated by Natural Power. All commercial fishery queries, should be directed to Peter Berney or Hollie Maven; Mobile T: 07391402387 / Email: Ossian.FLO@naturalpower.com.
XOCEAN will not be requesting fishing gear clearance at this time. The USVs will operate around all fishing activities. The vessel will be operating towed equipment to gather data on the seabed.
The vessel will be restricted in their ability to manoeuvre, and mariners are advised to maintain a safe distance of 500m.
The USV sends real time images and situational awareness data over satellite to a team of operators keeping watch and controlling the vessel remotely 24/7.
Safety Precautions: The USV is equipped with the following to make it conspicuous to other marine traffic:
⪠AIS
⪠VHF
⪠Navigation Lights & Sound Signal
⪠Active Radar Reflector
⪠Superstructure Painted Yellow
Seafarers are asked to avoid contact with the vessel and be aware of the operational area during this period
XOCEAN - Emergency Contact Details:
USV Supervisor (24/7) +353 1 223 9950 usv.supervisor@xocean.com
Rhiannon Evans (Project Manager) +44 2080 982107 Rhiannon.evans@xocean.com
Oliver Harris (Head of Projects) +44 2080 982108 oliver.harris@xocean.com
Anthony O’Toole (Marine Superintendent) +353 1 223 9957 Anthony.otoole@xocean.com
See detailed map on our bulletin websitePlease be advised that Seiche Limited have performed a Service on the 13 Passive Acoustic Monitoring (PAM) Stations deployed on the seabed in and at locations around the East Anglia THREE Offshore Windfarm Area.
The PAM stations will remain on the seabed until approximately the 31st of October 2027. The current PAM stations have 12 m height above the seabed, weighing 600 kg and their location is not marked by a surface buoy (OGN).There will be 3 types of monitoring station: 1) not marked with surface buoy (OGN); 2) two anchor points with 600 kg weight on each with max. 100 m seabed line between each mooring and a surface buoy on one of the anchor points (STL); and 3) a surface buoy deployment with two 600 kg anchor lines (TDS). Please see table below for which locations these mooring types will be laid. There is an exclusion zone of 250 m around the PAM Stations. All marine traffic is advised to abide by the 250 m safety zone around the PAM Stations all the time for their safety
See detailed map on our bulletin websiteNotification of the intention to redeploy a scientific research buoy in the Morlais Demonstration Zone to the Port of Holyhead.
The fall pipe vessel, Rollingstone, will perform seabed rock installation on section 1 (KP0 – KP91.5) and section 3 (KP175 – KP255) of the Dogger Bank C export cable route in the Southern North Sea. Rock will be placed at various locations on the export cable.
The work will mobilize 18 October 2024 until 31 December 2024. Work will be performed within the Export Cable (EC) route and will be continuous, 24 hours a day. During rock placement operations, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. Rollingstone will be restricted in its ability to maneuver 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. In the period between cable lay operation until the cable has been permanently protected by means of burial or rock placement, the cable may be locally exposed on the seafloor and the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. 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.
See detailed map on our bulletin websiteArven Offshore Wind Farm has deployed Passive Acoustic Monitoring (PAM) moorings in and around the Arven Offshore Wind Farm area to gather data on marine mammal activity.
All Mariners are advised that the vessel “Ievoli Cobalt” continued and completed pre-lay grapnel run (PLGR), installation of concrete mattresses and cable crossing protection, and a bathymetric survey along the export cable route. The vessel has now left the project.
The table below details the coordinates for the intended working area of the Ievoli Cobalt and mariners are requested to remain outside these coordinates.
The table below details the coordinates of project infrastructure to remain on the seabed following the Ievoli Cobalt’s completion of works. The mattresses are not expected to reduce navigable depth by over 5%.
Location | Equipment and Description | Latitude | Longitude | Approximate Depth (LAT) |
A |
Concrete mattresses 1 of 5.95 m x 2.95 m x 0.30 m |
54° 52.070520N | 001° 25.687020E | 23m |
B |
Concrete mattresses 2 of 5.95 m x 2.95 m x 0.30 m 1 of 5.55 m x 2.95 m x 0.50 m |
54° 51.943620N | 001° 27.690900E | 24m |
The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.
See detailed map on our bulletin websiteThe Cable Lay Vessel (CLV) Viking Neptune will perform the inter array cable installation works with the commencement around 5th of October 2024.
The works will continue over the winter. The vessel will further be assisted by the Walk to Work Vessel SUDRI ENABLER for the deployment of cable pull in teams. Shortly after the start of the cable installation, the Trenching Support vessel (TSV) C-INSTALLER will be mobilised to site for the burial of the installed cables. All works will be continuous, 24 hours a day. Charts of the DBB array area are provided below.
The cable lay vessel will deploy the inter array cable onto the seabed through her dedicated deck spread. The cable will remain exposed on the seabed till trenching works by C-INSTALLER are performed.
During operations, the VIKING NEPTUN, C-INSTALLER and SUDRI ENABLER 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.
See detailed map on our bulletin websitePlease be advised that Partrac Ltd has undertaken deployment of two weather monitoring buoys within the East Anglia THREE Offshore Wind Farm Area as per section 3 of this document. This was completed on 21/09/2023 Partrac utilized the vessel ‘Green Isle’ for the deployment of the buoys.
Mariners are advised that all overwater geophysical surveys conducted by Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) within the Sound of Iona, Argyll & Bute are now complete and the survey vessel has demobilised.
MarramWind Offshore Wind Farm Metocean and Floating LiDAR (FLiDAR) Campaign will be carrying out service visits for FLiDAR Buoy WS198 approximately every three months, until demobilisation in December 2024.
Mariners are advised that MarramWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy WS198 will remain mobilised until the 31st December 2024. Service activities on the buoy will be carried out at approximately three-monthly intervals, depending on weather conditions.
Servicing activities will comprise of the following steps:
− Temporary retrieval of the FLiDAR Buoys WS198 for transport to Aberdeen for servicing;
− Collection of FLiDAR Buoy WS198 in Aberdeen for onsite redeployment.
All locations referred to are outlined in a table 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 75 km off the east coast of Scotland.
FLiDAR Buoy WS198 is 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 buoy is 5 nautical miles.
Further details can be found within the attached Notice to Mariners.
See detailed map on our bulletin websiteMariners are advised that CampionWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy SWLB060 will remain mobilised until the 31st December 2024. Service activities on the buoy will be carried out at approximately three monthly intervals, depending on weather conditions.
Mariners are advised that CampionWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy SWLB060 will remain mobilised until the 31st December 2024. Service activities on the buoy will be carried out at approximately three monthly intervals, depending on weather conditions.
Servicing activities will comprise of the following steps: − Temporary retrieval of the FLiDAR Buoy SWLB060 for transport to Aberdeen for servicing; − Collection of FLiDAR Buoy SWLB060 in Aberdeen for onsite redeployment.
The FLiDAR Buoy will be monitored remotely so that in the event of a mooring failure, a team can be mobilised to carry out recovery and re-deployment activities. The Seawatch FLiDAR Buoy is 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 light on the Buoy is 5 nautical miles.
The FLiDAR Buoys location is outlined below and displayed within the Notice to Mariners (provided as an attachment to this notice). This location is within the CampionWind offshore wind farm array area, off the east coast of Scotland.
CampionWind will not seek to submit an updated AIS licence to support this extended mobilisation as the existing AIS Licence (1280449/3) is valid until September 2027.
See detailed map on our bulletin website
All Mariners are advised that the Survey Vessel “Precision 1” will be carrying out an MBES survey at KP40 on the Export Cable Route.
Further to the NtM circulated on 31st July 2024, notifying of cable recovery works, The Humber Gateway Offshore Offshore Wind Farm subsea inter array cable between Humber Gateway Offshore Sub-Station (53° 39.5162' N 0° 15.1722' E) and WTG C03 (53° 39.7481' N 0° 16.0865' E), has been replaced by the CURO and remains, temporarily, exposed on the seabed, unburied and unprotected.
In the interest of safety, Humber Gateway request that mariners observe the box SAFETY area (figure:1), until such time as the exposed cable is completely buried. The coordinates of this box are
Position A (NW Corner): 053° 39’.680N 000° 14’.584E
Position B (SW Corner): 53° 39’.161N 000° 14’.897E
Position C (SE Corner): 53° 39’.602N 000° 16’.701E
Position D (NE Corner): 53° 40’.106N 000° 16’.372E
See attached figure 1
Humber Gateway will be monitoring activity within, and close to, this box and Guard Vessel Mimer will be on station during the period where the cable is exposed located in the immediate vicinity of the cable. Mariners encroaching on this box will be contacted by the Guard Vessel and reminded of the requests to avoid fishing or transiting through the identified box.
Sea attached Figure 2
Guard Vessel Mimer details:
Length: 24.46m
Beam: 7.1m
Draft: 3.51m
Gross Tonnage: 220
Call Sign: T7ACL
MMSI: 268240900
Vsat bridge: +31 (0) 255 78007
Mobile Phone: +31 (0) 255 787 007
Vessel E- Mail: mimer@dbconnect.nl
Mariners are reminded that further safety information related to array cable exposures can be found in “The Risks of Fishing Near Cables and Renewable Energy Structures”, published on the KIS-ORCA website https://kis-orca.org/safety/the-risks-of-fishing-near-cables-renewable-energy-structures/. General safety information can be found here: https://www.seafish.org/article/kingfisher-bulletins. All mariners are requested to make themselves aware of their obligations for conducting activities over buried and protected cables under International and UK Cable (Subsea) Protection Legislation.
Burial of the cable, by the vessel NORA-B (MMSI - 244170504, Callsign -PDKG) will take place between 11th September 2024 and 30th September 2024. A photograph of the Nora-B is attached to this notice. Nora-B will be additionally supported by the Artemis (MMSI - 241813000 , Callsign-SVDQ3) during the operations.
See detailed map on our bulletin website
The works to install a new subsea cable and associated protection and stabilisation measures) have now been completed and these are located within the corridor described below (Figure 1). Updates to nautical charts will be made following completion of as-built surveys. Mariners are thanked for their cooperation during the execution of the works.
The works to install a new subsea cable and associated protection and stabilisation measures) have now been completed and these are located within the corridor described below (Figure 1). Updates to nautical charts will be made following completion of as-built surveys.
Mariners are thanked for their cooperation during the execution of the works.
See detailed map on our bulletin websiteMariners are advised that SSE Renewables will be returning to Berwick Bank Wind Farm area to undertake further Geotechnical survey work. The survey will be within the proposed Berwick Bank Wind Farm site boundary.
Overview
Mariners are advised that SSE Renewables will be returning to Berwick Bank Wind Farm area to continue Geotechnical survey work. The survey will be within the proposed Berwick Bank Wind Farm site boundary (see Figure 1). Respective co-ordinates are listed in Table 1.
It should be noted that 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 Sea Gull. The geotechnical survey is due to start on 02 May 2024. The scouting/guard vessel will be the Artemis.
Survey Duration
The survey is planned to mobilise on 02 May 2024 lasting approximately 4 months. As a result of weather delays, the planned survey end date will be 31 December 2024.
Survey Tasks
The scope of work within the main array area will comprise downhole sampling and cone penetration tests in sand and clay then extended by rotary core drilling in rock to depths up to 50 m below seabed.
During the campaign, the survey vessel will be deploying underwater equipment to 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.
See detailed map on our bulletin websiteInstallation of the Dogger Bank C Offshore Windfarm Export Cable will commence on the 19th of March 2024. Guard vessels will be deployed to protect the cable bundle from the start of cable lay until the cable is adequately protected by means of trenching or rock placement.
To provide the required coverage, approximately 16 guard vessels will be used in the period from the 19th of March 2024 until the 30th of November 2024. Durations at each location will depend on progress of the cable installation, trenching and rock placement operations. Not all the vessels are expected to be used concurrently.
The primary purpose of the guard vessels is to protect the exposed cable along the Dogger Bank C Export Cable corridor by monitoring and issuing warnings to marine traffic operating within 6Nm of the construction area with a Closest Point of Approach (CPA) < 1.5Nm. More specifically, the focus will be on those vessels with potential to be engaging in bottom contact activities such as fishing and anchoring, as these activities pose a risk not only to the exposed cable bundle but also to the vessels themselves.
The guard vessels will be clearly marked and display a highly visible "GUARD" sign on each side. The vessels will operate 24hrs, in all but extreme weather. Exchange of vessels on site will ensure the relevant section of cable is never left unguarded.
In sections where cable protection has been completed, guard vessels will be released, and sections will be opened up for fishing or use of other of equipment with seabed intervention. This may not necessarily be in a sequential order from shoreside outwards.
See detailed map on our bulletin websiteDeployment of two (2) Floating Seawatch Wind LiDAR buoys in the Moray Firth for the acquisition of Wind and Metocean Data for a period of 24 months.
*COWF-SWLB080 relocated 3rd of June 2024*
On the 3rd of June 2023, Fugro deployed two (2) Floating Seawatch LiDAR buoys within the Caledonia Offshore Wind Farm site for the acquisition of Wind and Metocean Data. The two buoys are intended to remain in-situ for a minimum period of 24 months.
Mariners are advised to maintain a 500 m clearance from the deployed equipment. Operations were completed by the Fishing vessel ‘MS Elisabeth’.
The buoys will remain in situ until June 2025, the exact removal date will depend on weather and be determined at a later stage. A separate NtM will be issued for the removal activity.
Details on the Seawatch Wind LiDAR (3.0) Buoys including navigational safety features and mooring layout design are provided in the attached NtM (V10).
See detailed map on our bulletin websiteMetocean monitoring instrumentation is planned for deployment at 4 locations along the proposed Morven wind farm export cable route. Deployment activity is set to begin in September 2024, and the equipment is planned to remain in place for a total of 6 months. They will be recovered around March 2025. Vessels are required to keep a safe distance (500m) from any maintenance vessels at all times. All vessels are requested to maintain a safe distance (400m) from the deployed monitoring equipment.
The vessel 'Green Isle' will be used for the instillation works.
The deployed equipment will comprise a seabed frame, equipped with metocean instrumentation, connected via a ground line to a secondary anchor weight and recovery system. This secondary anchor weight will be positioned up to 270 m away from the seabed frame. An accompanying guard buoy complete with lantern and AIS will also be deployed. Due to ground conditions, the mooring design at the D1 location differs from above. Equipment will comprise a subsurface ‘stumpy’ mooring which will not be visible from the water surface. No guard buoy will be deployed at this location. Specific locations are charted within the attached NtM.
All vessels are requested to maintain a safe distance (500m) from any maintenance vessels at all times. All vessels are requested to maintain a safe distance (400m) from the deployed monitoring equipment as shown in Section 2 at all times (detailed in attached NtM).
The outline of the survey works is as follows:
The Scottish Association for Marine Science (SAMS) has successfully deployed a Passive Acoustic Monitoring Device (PAM) on behalf of Spiorad na Mara Ltd. A second PAM was deployed on the 11th May The PAMs will be deployed on site over a period of 9 months within the Spiorad na Mara offshore wind farm site.
Positions of equipment can be seen in Figure and Table 1 of attached.
See detailed map on our bulletin websiteThe Service Operations Vessel, (SOV) Edda Boreas, will carry out Balance of Plant (BoP) and Asset Preservation operations within Dogger Bank A construction site. The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately Q2 2024. The works will be continuous, 24 hours a day.
The operations will include visual inspections and maintenance at installed WTG foundation locations. During operations, the Edda Boreas will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 500m separation distance from the Offshore Supply Vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working area.
See detailed map on our bulletin websiteAs a berth holder at the Morlais Demonstration Zone (MDZ), a site operated by Menter Môn, HydroWing in partnership with DynamOcean wish to undertake resource/velocity data collection. Data collection will utilise one Acoustic Doppler Current Profiler (ADCP). The ADCP will be placed on the seabed in locations highlighted below and will be left for ~12 weeks. ADCP Deployment/recovery operations will require ~0.5-1 days each on site.
HydroWing – ADCP deployment Plan – English
As a berth holder at the Morlais Demonstration Zone (MDZ), a site operated by Menter Môn, HydroWing in partnership with DynamOcean wish to undertake resource/velocity data collection.
Data collection will utilise one Acoustic Doppler Current Profiler (ADCP). The ADCP will be placed on the seabed in locations highlighted below and will be left for ~12 weeks.
ADCP Deployment/recovery operations will require ~0.5-1 days each on site.
Anticipated Timeline
The below shows the proposed timeline for the data collection operations. Due to weather uncertainties at this time of year, HydroWing have highlighted 1 month windows for deployment and recovery to enable flexibility and ability to be reactive to suitable weather/tide windows.
Expected dates are as follows:
Deployment: 29th August or 12th September
Equipment left subsea: Up to 90 days post deployment
Recovery date: 21st or 28th November
Task |
Date |
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29/08/24 |
05/09/24 |
12/09/24 |
19/09/24 |
26/09/24 |
03/10/24 |
10/10/24 |
17/10/24 |
24/10/24 |
31/10/24 |
07/11/24 |
21/11/24 |
28/11/24 |
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Locational Specifics
Berth BL3 shown in the Map below shows the area in which vessel activities associated with the project will take place along with the proposed locations for equipment deployment
ADCP will be deployed at the following co-ordinates:
WGS84 |
Decimal Degree |
Lat (°N) |
53.291013 |
Lon (°E) |
-4.705037 |
All Mariners are advised that the nearshore HDD works are complete and guard vessels remain onsite 24 hours per day to monitor the installed export cable until approximately the end of Q4- 2024.
An MBES survey of the HDD trenches out to KP 3 was recently performed. The survey indicates the spoil heaps from 2023 back hoe excavation works have largely naturally dispersed. One spoil heap remains with a maximum height above the seabed of < 0.2 m.
Fisheries clerance will remain in place and vessels are requested to leave a wide berth as identified for the nearshore exclusion boundary (HDD pits out to KP3) until further notice.
The 2 Export Cables & 1 Fibre Optic Cable (all bundled) have been installed into the HDD ducts at Landfall (Marske by The Sea) with the exclusion zone coordinates for campaign 1 installation works detailed within the table above and relevant Notice to Mariners. Fishing vessels are requested to pass at a safe speed and distance and remain outside of the exclusion area identified.
The following table highlights zonal areas where guard vessels are patrolling and guarding the campaign 1 export cable.
Guard Vessel | KP Start & Position | KP End | Approx Start Position | Approx End Position |
GA1 |
KP1 |
23.5 |
54 36.29N x 001 01.04W | 54 37.89N x 000 40.12W |
GA2 | 23.5 | 53.8 | 54 37.89N x 000 40.12W | 54 41.83N x 000 13.90W |
GA3 | 57.6 | 89.5 | 54 42.59N x 000 10.44W | 54 45.68N x 000 18.58E |
Mariners are advised of the following vessels commencing operations at Sofia Offshore Wind Farm (SOWF).
Vessel Name | Vessel Type | Length (m) | Beam (m) | Draft (m) | Gross Tonnage (T) | Call Sign | MMSI Number |
Sancta Maria | Guard Vessel | 20.37 | 6 | 3.03 | 106 | 2FOV7 | 235093015 |
Dolfijn | Guard Vessel | 27 | 6.2 | 3.1 | 99 | YJQL8 | 576697000 |
Walvis | Guard Vessel | 27 | 6.4 | 3.32 | 108 | YJQG3 | 576448000 |
Haulbowline | Guard Vessel | 22.3 | 7 | 2.7 | 88 | MEZW9 | 232021354 |
Star of Hope | Guard Vessel | 23.9 | 7.2 | 3.4 | 101 | MKDN2 | 232038483 |
Merlin Diver | Guard Vessel | 24.99 | 6.18 | 3.8 | 88 | YJQG4 | 576451000 |
Enterprise II | Guard / Scout Vessel | 26 | 9.2 | 4.7 | 421 | MPFN7 | 232006130 |
The table below also provides the position and description of any equipment/asset/item that will remain in place following demobilisation of the Ievoli Ivory.
Location | Equipment and Description | Latitude | Longitude | Approximate Depth (LAT) |
A |
Concrete mattresses 3 of 5.95 m x 2.95 m x 0.30 m |
54°38.544’ N | 000°35.147’W | 55m |
B |
Concrete mattresses 1 of 5.95 m x 2.95 m x 0.30 m |
54°38.572’ N | 000°35.142’W | 55m |
C |
Concrete mattresses 2 of 5.95 m x 2.95 m x 0.30 m 1 of 5.55 m x 2.95 m x 0.50 m |
54°48.144’ N | 000°37.515’E | 74m |
Dogger Bank Offshore Windfarm is being developed in 3 phases – Dogger Bank A (DBA), Dogger Bank B (DBB) and Dogger Bank C (DBC), located off the North-east coast of England in the Southern North Sea
Mariners are advised of potential floating debris in the vicinity of the Dogger Bank A offshore wind farm array area. Any sightings of floating debris should be reported to the Duty Marine Coordinator.
See detailed map on our bulletin websiteThe Dogger Bank D project will be carrying out an MBES geophysical survey within Dogger Bank D Array and Export Cable Route Areas using remotely piloted Uncrewed Surface Vessels (USVs).
The USVs will be mobilised from Scarborough or Hartlepool Harbour where each USV will be escorted out of the harbour limits, before transiting to the survey area. Survey Operations will be continuous 24hrs a day. Although vessels are uncrewed, they are managed remotely continuously using 360 degree cameras and other sensors.
The works will commence on the 13th of August 2024, continuing until 31st December 2024 when all locations have been surveyed. The works will be continuous, 24 hours a day. A chart of the DBD Array Area and Export Cable Route corridor including bounding coordinates is provided below.
It is requested that all vessels maintain a minimum of 500m separation distance from the USVs and pass at reduced speed.
See detailed map on our bulletin websiteMetocean instrumentation and a floating LiDAR system (FLS) have been deployed within the boundary of the proposed Muir Mhòr Offshore Wind Farm Project site. MARINE USERS are requested to maintain a safe clearance distance of 500m from all assets. August 2024: replacement of northern guard buoy & FLS scheduled Aug-Sep 2024, to be deployed from Peterhead Port. All AIS & marine safety information remain unchanged from the original Dec 2022 notice.
All instrumentation is deployed at a single deployment location within the project site. The purpose of the instrumentation is to gather Metocean and wind data to inform the proposed Muir Mhor Offshore Wind Farm Project.
All instrumentation was deployed by Green Rebel from the Port of Aberdeen to the site in February 2023 via the vessel BB Ocean (IMO 9196503, MMSI 258825000).
The FLS mooring comprises of a surface visible buoy moored to the seabed via a two-point mooring system constructed using a combination of rope and chain. Two guard buoys are located at approximately 30m from the main FLS buoy in a North/South orientation, with the mooring spread covering an approximate 315m radius. There is also a seabed frame for current measurements contained within the overall deployment footprint, approximately 30m East of the main FLS buoy. Note: there are 2x orange polyform marker buoys located above the northern anchor position (detailed below) which will be removed during the first planned maintenance visit.
The FLS light characteristics are Fl (5) Y 20s with 5nm range. The guard buoys’ light characteristics are FI Y 5s with 3nm range and include a yellow St. Andrew’s Cross topmark. The FLS is designated as “Muir Mhor Floating Lidar” on AIS, with MMSI number 992351400.
Details of the surface visible buoy, guard buoys, seabed frame and mooring arrangement are provided in the attachments.
MARINE USERS are requested to maintain a safe clearance distance of 500m from all assets.
See detailed map on our bulletin websiteThe Jack-up WTG Installation Vessel, Voltaire, will install wind turbine generators (WTG) within the Dogger Bank A construction area.
The works will commence on the 05th of July 2023, continuing until approximately Q2 2024. The works will be continuous, 24 hours a day. A chart of the DBA 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. The safety zone 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.
See detailed map on our bulletin websitePlease be advised that EOLOS has successfully relocated the Bellrock Floating LiDAR System buoy FLIDAR E25 on 24th February 2024. The new coordinates are shown in Table 1 in the attached. The Bellrock FLS200 E25 will remain in the Bellrock Offshore Wind Farm site for an approximate period of 24 months (i.e. until April 2025).
Please be advised that EOLOS has successfully relocated the Bellrock Floating LiDAR System buoy FLIDAR E25 on 24th February 2024. The new coordinates are shown in Table 1 in the attached.
The Bellrock FLIDAR E25 was initially deployed within the Bellorck Offshore Wind Farm site in April 2023, for acquisition of Wind and Metocean Data. A description of the device is presented in Section 2 in the attached.
The works completed on the 24th February 2024, with the Voe Earl vessel, consisted of recovering the Bellrock FLIDAR E25 device from its original location, and redeploying it at the new location (See Table 1 and Figure 1 in the attached).
The Bellrock FLS200 E25 will remain in the Bellrock Offshore Wind Farm site for an approximate period of 24 months (i.e. until April 2025).
See detailed map on our bulletin websiteMariners are advised of coastal marine survey activities at Rattray Head & outer moray firth from 4th to 24th May 2024. The vessel shall be restricted in her ability to manoeuvre, tethered ROV and/or over the side equipment will be in use. Keep well clear of the vessel whilst under survey operations.
Description of works:
• The vessel will be working through daylight hours only.
• Vessel-mounted and towed equipment may be in use for the purposes of geophysical survey of the seabed and subsurface.
• The survey vessel is likely to be steaming a pattern of regular parallel lines, and as such may make sudden unpredictable changes of course, including sudden changes of course onto reciprocal headings.
Mariners are advised to provide the survey vessel with ample clearance, ideally 1000m.
Mariners are advised to exercise caution and follow any additional instructions provided.
The vessel will maintain a listening watch on VHF Channel 16
The survey office may be contacted via telephone on 01857-595-595
See detailed map on our bulletin websiteThe Trinity House Buoy Installation Vessel, Galatea, has installed the Dogger Bank C boundary demarcation buoys in the Southern North Sea .
The 17 construction boundary demarcation buoys will remain in location until the windfarm construction activities have been completed and handed over to the Operations and Maintenance teams.
Once the permanent Aids to Navigation (AtoN) have been installed on the WTGs, Trinity House will approve the permanent AtoN and the boundary buoys will be removed.
If anyone finds a buoy that is off station or encounters a buoy location where it is not functioning or is missing, they should report this to the Dogger Bank Duty Marine Coordinator as soon as possible.
See detailed map on our bulletin websiteEolos has deployed two floating LiDAR Devices offshore Scotland for the acquisition of Wind and Metocean Data for a minimum period of 24 months.
Eolos has deployed two (2) Floating LiDAR Devices offshore Scotland for the acquisition of Wind and Metocean Data for a minimum period of 24 months.
The units deployed are:
Metocean buoy
Illustrative figures showing the buoy dimensions and general arrangement are provided in the attached NtM.
Once in the water the top of the tallest mast is around 4 meters above the sea level.
The buoy is fitted with the following navigational safety features:
Mooring design
The buoy drifting radius is approximately 240 m from its deployment position. All material will be removed from the seabed after the measurement campaign is complete. The mooring layout design is provided on the final page of this document. The mooring layout design is provided as the final page of the attached NtM.
See detailed map on our bulletin website
The Offshore installation vessel, HLV Seaway Strashnov, will install mono-pile foundations in the Dogger Bank B offshore windfarm construction area
The works will commence on the 17th of April 2024, continuing until approximately Q3 2024. The works will be continuous 24 hours a day. A chart of the DBB construction area and the foundation locations are provided below. A running list of the next locations to be installed and mono-piled locations are presented in the Weekly Notice of Operations.
The installed monopiles will be marked with temporary lighting with the following characteristics:
• Flashing (Fl) Yellow (Y) 2.5 seconds (s)
• IALA Availability Category 2 (not less than 99.0%)
• 360° visibility – up to two lights per structure may be used to achieve this
• At least 2 nm range.
During operations, the HLV Seaway Strashnov will be restricted in 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.
During operations, a Statutory Safety zone of 500m radius will be in place around the HLV Seaway Strashnov. 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
See detailed map on our bulletin websiteMoray Offshore Windfarm (West) Limited (Moray West) will be carrying out Wind Turbine Generator Installation Works across the whole of the Moray West site. The Wind Turbine Installation Vessel ‘Wind Orca’ is expected to arrive to site circa 6th April 2024. The work comprises of the installation of 60 x WTGs (Wind Turbine Generators) on the already installed Transition Pieces.
The ‘Wind Orca’ vessel is expected to arrive on site circa 6th April 2024 to complete offshore Wind Turbine Generator (WTG) installation onto the pre-installed monopile and transition pieces on site. The overall duration is expected to be approximately 6-9 months. The Wind Orca will be supported by the SOV (Service Offshore Vessel) ‘Norwind Breeze’ and two CTV’s (Crew Transfer Vessels) Fob Swath 3 & Fob Swath5.
See detailed map on our bulletin websiteConstruction of the Princess Elisabeth Island. The exclusion zone around the construction site is marked by 4 cardinal buoys (ELI-N, ELI-E, ELI-S and ELI-W).
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).
More information about the Princess Elisabeth Island is available on the Elia website: www.elia.be/projects.
See detailed map on our bulletin websiteResults of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.
Please find attached a chart showing the results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.
The exposed/shallow burial areas are shown as the coloured dots on the cable route highlighted in a black box. Equitix (Greater Gabbard OFTO) have asked that all Fishermen operate with caution when fishing anywhere on the cable route and particularly the areas that are shallow buried around KP10.’
Coordinates of exposed/shallow burial areas are shown on the attached chart.
The OFTO is updating its risk assessments to determine the extent of remedial measures that may be required. Equitix intend to provide an update on remediation after the risk assessment exercise is complete.’
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