All Mariners are advised that Wind Turbine Generator Installation & Commissioning Works are expected to commence operations at the Sofia Offshore Wind Farm on (or around) circa 20th March 2025. The “IWS Seawalker”, “FOB Swath 9” & “FOB Swath 10” will first commence infield trials.
The exact start and finish dates will be dependent on the prevailing weather conditions and work progress. Mariners are requested to remain where possible 500m from Construction vessels when exhibiting the day shapes / night lights for vessels restricted in their manoeuvrability.
Vessels operational during these works are as follows:
Vessel Name | Vessel Type | Length (M) | Gross Tonnage | IMO | Call Sign | MMSI Number |
Wind Peak | WTG Installation Vessel | 150 | 34100 | 9957828 | OZVU2 | 219032994 |
IWS Seawalker | Service Operation Vessel | 90 | 6712 | 9968580 | LAVP8 | 257784000 |
FOB Swath 9 | Crew Transfer Vessel | 33 | 372 | 9920576 | OYKP2 | 219027989 |
FOB Swath 10 | Crew Transfer Vessel | 32 | 372 | 9920588 | OYMX2 |
219027988 |
Service Operation Vessels
The Service Operations Vessels (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to support to the SOWF project throughout the construction of the offshore windfarm.
The SOV “Olympic Notos” departed project on 18th March 2025.
SOVs shall be transiting to / from the Sofia Array and the port of Blyth / Sunderland throughout this period.
All vessels can be contacted on VHF 16 throughout as required. All vessels shall be operating to / from the Port of Hull and will be operational 24 hours / day.
See detailed map on our bulletin website
The Cable Laying Vessel (CLV) “Calypso” continues with Inter-Array Cable operations within the Sofia Offshore Windfarm Array. The exact finish date will be dependent on the prevailing weather conditions and work progress.
The Subsea Viking continues supporting the Inter Array Cable Installation works via Survey, Cable Burial, Rock Bag Installation Works, as required.
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 Acta Orion and Olympic Orion continue to support Inter Array Cable works.
The SOV Olympic Notos departed the project on 18th March 2025.
The Acta Centaurus is also expected to commence operations at the Sofia OWF on the 21st March.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
Vessels shall be transiting to / from the Sofia Array and the ports of Blyth & Sunderland throughout this period.
Crew Transfer Vessel
The Crew Transfer Vessel (CTV) “MHO Balder” is expected to commence operations on or around 9th April 2025.
Mariners are requested to remain where possible 500m from these vessels, as they will have restricted manoeuvrability and shall also be exhibiting the correct day shapes/ lights.
See detailed map on our bulletin websiteThe 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. The Noise Abatement (Big Bubble Curtain) Vessel “SAR Odin” continues supporting Aeolus foundation installation works.
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 shall be transiting to / from the Sofia Array and the ports of Blyth & Tyne throughout this period.
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 |
61 | A03, B01, D01, A05 | C05, A04, C07 |
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.
Noise Monitoring Equipment Installation
Noise monitoring equipment installed in the following positions within the Sofia Offshore Array:
Location | Latitude (DMS) | Longitude (DMS) | Latitude (DDM) | Longitude (DDM) | LAT(m) at Location (Excluding Water Depth Reduction): |
1 | 54° 57' 32.01" N | 2° 3' 15.48" E | 54 57.534N | 002 03.258E | 27m |
2 | 54° 57' 40.07" N | 2° 3' 29.01" E | 54 57.668N | 002 03.484E | 25.5m |
3 | 54° 58' 50.27" N | 2° 6' 11.00" E | 54 58.839N | 002 06.183E | 24.5m |
4 | 54° 59' 16.80" N | 2° 7' 22.60" E | 54 59.280N | 002 07.377E | 25m |
5 | 54° 58' 6.31" N | 2° 18' 31.48" E | 54 58.105N | 002 18.525E | 25m |
***Although all equipment will be submerged during the installation period, ALL Mariners are advised that the navigable water depth within the assigned areas will be reduced by approx. 12 metres due to the equipment protruding from the seabed and are requested to take this into consideration when navigating within the geographical area. In addition, all Mariners are to allow a 100m radius avoidance while the equipment is deployed.***
Service Operation Vessels
The Service Operations Vessels (SOV) “Rem Power” & Daughter craft “Rem Transporter” continues to support to the SOWF project throughout the construction of the offshore windfarm.
The “Olympic Notos” departed project on 18th March 2025.
The SOV Acta Centaurus are expected to commence operations at the Sofia OWF on the 21st March.
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 restricted in ability to manoeuvre.
Crew Transfer Vessel
The Crew Transfer Vessel (CTV) “MHO Balder” is expected to commence operations on or around 9th April 2025.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websitePartrac Ltd., on behalf of Thistle Wind Partners, has deployed and is maintaining metocean equipment, within the boundary of the proposed Bowdun array area located off the east coast of Scotland.
The following equipment will be recovered, maintained, and redeployed on the site:
Maintenance activities will include but not be limited to:
All vessels are requested to maintain a 500m exclusion zone around the location.
See detailed map on our bulletin websitePartrac Ltd., on behalf of Thistle Wind Partners, has deployed and is maintaining metocean equipment, a Seabed mooring, within the boundary of the proposed Ayre array area
Partrac Ltd., on behalf of Thistle Wind Partners would like vessels to note that there is 100m HMPE recovery rope connected to the anchor weight which may be suspended in the water column. All vessels are to avoid the area. There will be an attempt to locate and recover the line and anchor.
The following equipment will be recovered, maintained, and redeployed on the site:
Maintenance activities will include but not be limited to:
All vessels are requested to maintain a 500m exclusion zone around the location.
See detailed map on our bulletin website
All mariners and stakeholders are advised that seabed preparation activities will commence within the Inch Cape Offshore Wind Farm and export cable corridor.
On behalf of Inch Cape Offshore Ltd, N-Sea will commence seabed preparation activities within the wind farm site boundary and its export cable corridor on or around the 30th of March 2025.
Seabed preparation will include the relocation of any boulders and the identification and mitigation of any unexploded ordnance (UXO) which may affect the installation of offshore structures, inter-array cables and export cables.
The boulder relocation vessel, FS Aries is expected to arrive at the work site on or around the 30th of March with the UXO identification & mitigation vessel,
4-Winds arriving on or around the 4th of April.
Works are expected to be completed by November 2025.
See detailed map on our bulletin websitePlease be advised that the Broadshore Hub Offshore Wind Farms’ Floating LiDAR buoy E26, is unlit. The floating LiDAR buoy remains unlit as previously reported, and the project team await a suitable weather window to undertake the lighting repair.
Please be advised that the Broadshore Hub Offshore Wind Farms’ Floating LiDAR buoy E26, is unlit.
The floating LiDAR buoy remains unlit as previously reported, and the project team await a suitable weather window to undertake the lighting repair.
The floating LiDAR buoy’s passive AIS (MMSI 992351405) is confirmed as being operational. Vessels passing within ca. 4 nm will receive the AIS signal from the floating LiDAR.
The project team will confirm via updated Notice to Mariners when the lighting repair is completed.
See detailed map on our bulletin websiteGlobal Marine will be conducting the installation of the Q&E North telecommunications cable from Joss Bay, UK to Ostend, Belgium. The first campaign commenced in February 2025. Timings are dependent upon weather and other operational conditions. Further details can be found in the attached NtM.
The vessels will be limited in manoeuvrability therefore, vessels working in the area should proceed with caution and alert the vessel within 1NM from the cable ship during operations and all activity should remain clear 250m either side of the vessel, 500m corridor in total.
For a further breakdown of operations, please don't hesitate to get in touch.
See detailed map on our bulletin websitePartrac Ltd. deployed a FLS200 Floating LiDAR buoy at two sites (Sites 1 & 3) within the Ossian floating offshore wind farm off the East coast of Scotland in August 2022. Partrac is planning to recover both Floating LiDAR buoys from 22nd April 2025, and the works are estimated to be carried out over two days, weather permitting. The vessel to be used for the works is the Mar Fortune with call sign LEZI, MMSI Number 257011630 and IMO 9267273.
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 websiteMariners are advised that the Jack Up Vessel Seaway Ventus will commence monopile and transition piece installation operations within the East Anglia THREE offshore windfarm area circa the 27/03/2025. Operations will be conducted by Seaway 7 and the main working area will be inside the CDM Zone of the wind farm array.
Seaway Ventus will install 95 monopiles and transition pieces at the WTG locations set out in attached East Anglia Three Notice To Mariners 012 /2025. During the monopile and transition piece installation campaign, all vessels are requested to keep a 500m safety distance from the Seaway Ventus. It is currently anticipated that weather permitting, offshore works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week)
During operations, the ‘Seaway Ventus’ will have restricted manoeuvrability as defined under COLREGS (International Regulations for Preventing Collisions At Sea, 1972). They will display the appropriate day shapes and lights and will transmit an Automatic Identification System (AIS) message.
See detailed map on our bulletin websiteGlobal Marine will be conducting the installation of the Q&E South telecommunications cable from Newhaven, UK to Cayeux-sur-Mer, France, with the first campaign commencing in April 2025. Timings are dependent upon weather and other operational conditions. Further details can be found in the attached NtM.
The vessels will be limited in manoeuvrability therefore, vessels working in the area should proceed with caution and alert the vessel within 1NM from the cable ship during operations and all activity should remain clear 250m either side of the vessel, 500m corridor in total.
For a further breakdown of operations, please don't hesitate to get in touch.
See detailed map on our bulletin websiteTo conduct a seabed survey will be conducted at the Morlais Tidal Demonstration site. The survey will adhere to a methodology agreed upon with Menter Môn Morlais Ltd and will include the following components: • UXO Survey • Pre-construction Marine Archaeology Survey • Bathymetric Survey (for navigation monitoring) • Pre-Construction Monitoring Survey (to assess the location, identification, and abundance of conservation habitats) • Environmental Monitoring (including a bathymetric survey)
Mariners are advised that Fraunhofer IWES has deployed a Floating Lidar System (FLS) next to the NOAH (National Offshore Anemometry Hub), 3NM off Blyth. The ODAS buoy was moored on the 1st November 2024 and is now expected to stay at its deployed position until August 2025.
Additional vessel and manpower working within Sheringham Shoal Windfarm.
Sheringham Shoal windfarm will be undertaking additional works outside of scheduled maintenance commencing 20th March 2025. This work will involve the retrofit of the Push on Plates (PoPs) on 80 WTGs and the 2 Offshore Substations to allow “Walk to Work” operations to be completed via Service Operation Vessel (SOV).
The project is expected to last for approximately 16 weeks and will require 1 additional CTV vessel to be present in the windfarm for this period. However, there should be some expectation of weather delays therefore some contingency should be applied to the planned dates.
The Crew Transfer Vessel (CTV) Manor Victor is contracted for normal service operations will support in the field with crew transfers and additional transport.
The additional work scope and vessel should not cause any impact to local vessels or activities, but normal due care should be taken within the boundary of the windfarm due to increased vessel activity and work on turbines and offshore sub stations.
See detailed map on our bulletin websiteGeophysical survey using a towed array to be conducted in the Kentish Flats/Kentish Flats Extension and Thanet offshore windfarms
A towed geophysical array, at a length of approx. 120m, will be conducted inside the Kentish Flast and Thanet Offshore Windfarms. The vessel (Spectrum 1) being used will be restricted in her ability to manouver due to the towed equipment.
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.
Inter Array Cable Multibeam Survey Operations
The Survey Vessel Karina will perform multibeam survey operations along the inter array cable routes in the Dogger Bank C Offshore Wind Farm construction area. During operation, Karina 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 vessel will also transmit an Automatic Identification System (AIS) message.
See detailed map on our bulletin website
Installation 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 websitePlease be advised that circa the 01/04/2025, Hughes Subsea Services intend to commence UXO Clearance works within the East Anglia THREE CDM zone along the Export Cable Route near Bawdsey. Diving operations will be carried out onboard the vessel “DSV Curtis Marshall”. All vessels are required to maintain a minimum of 500 metres safety distance from “DSV Curtis Marshall” making minimal wash and navigating with caution.
The scope of work for the “DSV Curtis Marshall” comprises of surface fed diving to conduct disposal of two confirmed unexploded ordnance. Whilst diving operations are underway, the vessel will display an alpha flag and make appropriate VHF announcements prior to commencing operations. The “DSV Curtis Marshall” will be assisted by the “GPS Battler” workboat during mooring operations, with the “Hughes Hunter” Providing support during clearance operations.
The “DSV Curtis Marshall” will be working in 4-point mooring mode.
Whilst diving operations are underway, ‘DSV Curtis Marshall’ will display an alpha flag, broadcast relevant sécurité messages and will transmit an Automatic Identification System (AIS) message. All three Vessels will maintain a listening watch on VHF Channel 16 and VHF DSC Channel 70 continuously throughout operations. Diving Operations will be conducted during daylight hours and are dependent on tides.
For Further information regarding ECR UXO clearance operations, please see attached East Anglia Three Notice To Mariners 015/2025.
See detailed map on our bulletin website
Mariners are advised that the vessel ‘Njord R’ is due to commence dredging operations within the East Anglia THREE export cable corridor. Works are due to commence Circa the 29/03/2025. Operations will be conducted by NKT/Rohde Nielsen, during the period of export cable corridor dredging works all vessels are requested to keep a 500m safety distance from the Njord R.
The objective of the scope is to carry out dredging in areas where there are large sandwaves that could impact cable burial operations. There are 60 sandwave locations identified within the export cable route that will be targeted for dredging. The extent of dredge areas varies for each location. The lengths of dredge sections range from between 5m and 50m and the width of the sections is ~20m. The 60 dredge areas are located between KP41 and KP123 of the export cable route. The disposal of dredge material will be within the designated disposal area (HU212) and will be contained within the boundaries of the EA THREE DCO limits. HU212 extends from ~KP56 to ~KP140 along the export cable route.
For more information regarding EA3 Export cable corridor dredging operations, please see attached Notice To Mariners 014/2025.
See detailed map on our bulletin websiteMariners are advised that the vessel ‘Seaspan Situla’ will commence monopile installation noise monitoring operations within the East Anglia THREE Offshore windfarm area circa the 30/03/2025. Operations will be conducted by Seaway 7 and Seiche, the main working area will be inside the CDM Zone of the wind farm array. During the monopile installation noise monitoring campaign, all vessels are requested to keep a 500m safety distance from the Seaspan Situla.
Seaspan Situla will deploy noise monitoring equipment during installation of the first six piled foundations. Noise monitoring will be conducted using a combination of moored monitoring stations and vessel-based deployment. Prior to each pilling event to be monitored, four moored stations will be deployed on the seabed in a straight transect at distances of 500-750 metres, 1.5km, 3-6km and 8-15km. Each station will have a mounted hydrophone which will sit approximately 2.5 metres above the seabed. The vessel-based deployed hydrophone will be positioned in the middle of the water column. For further information regarding monopile noise monitoring, please see attached East Anglia Three Notice To Mariners 013 /2025. Positions of deployed noise monitoring equipment will be notified via future notice to mariners.
See detailed map on our bulletin websiteMariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) will be recommenicng a scope of Horizontal Directional Drilling (HDD) works in April 2025. These works are being undertaken for the purpose of installing export cable ducts for the Hornsea Project Three Offshore Wind Farm (‘Hornsea Three’) project, located within the UK Sector of the North Sea.
The first vessels are expected to mobilise on 24th March from both Great Yarmouth and Tilbury. The works will take approximately 30 days to complete, not including mobilisation/demobilisation time and weather contingency.
The contents of this notice are based upon our current understanding of Hornsea Three’s requirements. Any amendents to the information contained within this notice will be communicated accordingly.
See detailed map on our bulletin websiteOffshore 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
Installation vessels HLV Seaway Strashnov and Seaway Alfa Lift are planned to return to Dogger Bank B by Q2 2025 to complete the installation of the remaining monopiles and transition pieces when weather conditions will be expected to have improved
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.
Dogger Bank B IAC Cable Burial
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.
During operations, the C-INSTALLER,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 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 Boreas Enabler, Grampian Tyne IWS Skywalker, IWS Starwalker and Grampian Tweed will carry out construction support activities within Dogger Bank A construction site.
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 2025. 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.
See detailed map on our bulletin website
Due to completion of the metocean survey, the demobilisation of the waverider buoy and seabed frame is scheduled to take place during March or April 2025, subject to weather. The works will be executed from Peterhead Port by the vessel GAOTH NA MARA. ALL VESSELS ARE REQUESTED to give the vessel engaged in the replacement activity a wide berth. MARINERS ARE REMINDED to navigate with caution and keep continued watch on VHF Ch. 70 / 16 when navigating the area.
Metocean instrumentation and a floating LiDAR system (FLS) have been deployed by Green Rebel within the boundary of the proposed Muir Mhòr Offshore Wind Farm Project site in the North Sea since February 2023.
Due to completion of the metocean survey, the demobilisation of the waverider buoy and seabed frame is scheduled to take place during March or April 2025, subject to weather. The works will be executed from Peterhead Port by the vessel GAOTH NA MARA. ALL VESSELS ARE REQUESTED to give the vessel engaged in the replacement activity a wide berth.
MARINERS ARE REMINDED to navigate with caution and keep continued watch on VHF Ch. 70 / 16 when navigating the area.
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 Gargano. The scouting/guard vessel will be the Courage.
Survey Duration
The survey is planned to mobilise on 26 February 2025 lasting approximately 5 weeks. To account for weather downtime we will extend the validity of this notice to 31 May 2025.
Survey Tasks
The scope of work within the main array area will entail deep push Cone Penetration Tests (CPTs) and Vibrocores at approximately 104 locations, with the campaign lasting for 4-5 weeks.
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 500m from the vessel(s). No towed equipment will be used.
See detailed map on our bulletin websiteUXO Clearance Works using the vessels; DSV Curtis Marshall, Workboat GPS Battler and Support Craft Hughes Hunter will recommence on the EA3 Worksite from April 1st 2025 and is expected to last approximately 2 weeks.
UXO Clearance Works involving the vessels; DSV Curtis Marshall, Workboat GPS Battler and Support Craft Hughes Hunter will recommence within the EA3 Export Cable Route at the following specific locations:-
Easting |
Northing |
Lat |
Long |
403246.31 |
5767487.92 |
052° 02.973'N |
001° 35.343'E |
403356.08 |
5767577.42 |
052° 03.022'N |
001° 35.437'E |
UXO Clearances will be carried out utilising a Low Order Disposal technique on 2 x cUXOs.
Diving operations will be carried from the DSV Curtis Marshall which will be operating in 4-point mooring mode.
The Workboat GPS Battler will be supporting the DSV Curtis Marshall with Anchor deployments and recovery’s.
The Support Craft Hughes Hunter will be supporting operations.
Diving operations will be carried out during day shift slack water periods. Vessels will remain on stanby on site during the night.
All vessels are required to maintain a minimum of 500 metres safety distance from “DSV Curtis Marshall” making minimal wash and navigating with caution.
The vessel will broadcast relevant sécurité messages and maintain a listening watch on VHF channel 16.
See detailed map on our bulletin websiteDredging - East Anglia Three Offshore Converter Station Area: Mariners are advised that the Njord R is due to commence dredging operations within East Anglia Three Offshore Windfarm (EA3 OWF). The works are due to commence Circa the 7th of March 2025. Operations will be conducted by Seaway 7/Rohde Nielsen and the main working area will be inside of the offshore wind farm array as per the attached notice to mariners.
The Vessel Njord R will carry out the following operations within the EA3 offshore windfarm array.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables in 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 in 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, defined by the start and end coordinates listed in Table 1 of the attached NtM.
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 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 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.
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 that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections in the Argyll marine areas.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections in the 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.
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 websiteThe offshore geotechnical survey of the proposed Morgan Offshore Wind Project (Generation Assets) and Morgan Offshore Wind Project is estimated to commence on the ~28th of March 2025 with the survey coming to an end ~ the 30th of September 2025. The works will be undertaken by Horizon Geodrill (details and contact in attached)
The survey involves the drilling, sampling and coring of boreholes throughout the two Array Areas. The vessel will be stationary at each borehole location for 1 to 3 days, depending on borehole depth, to allow the samples and cores to be taken from the seabed. 24 hour and 7-day lookaheads will be provided, containing details of the positions of Horizon Geodrill.
An Offshore Fisheries Liaison Officer (OFLO) will not be present on board the vessel during the survey, but the project Fishing Industry Representative (FIR) and/or Company FLO (CLFO) can be contacted with any specific queries.
Contact details for the FIR and CFLO are provided in attached.
See detailed map on our bulletin websiteContinued operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of the marina at Hartlepool during February to mid March 2025. The vessel will conduct survey activities associated with a cable route investigation for a proposed offshore wind farm. Up to 1 vessel will be operational at any one time within the survey area, with the focus towards the nearshore area off Seaham.
A crewed support vessel will escort the USVs from port to clear water. For any activities nearshore around Seaham, a support vessel will potentially be in attendance of the USV. Although the USV is uncrewed, it will be remotely crewed throughout its 24-hour operations and will use its 360-degree cameras, radar and other situational awareness sensors.
More information can be found within the Notice to Mariners attatched.
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 scheduled service from an assigned pool of Platform Supply Vessels 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 EERV Putford Protector is supporting the commissioning phase of the Offshore Converter Platform, providing close standby cover as required during overside works.
Service Operation Vessels
The Service Operations Vessel (SOV) “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.
Crew Transfer Vessel
The Crew Transfer Vessel (CTV) “MHO Balder” is expected to commence operations on or around 9th April 2025.
All vessels can be contacted on VHF 16 for further information as required reference proximity / nearby operations etc.
See detailed map on our bulletin websitePlease be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections in the Outer Hebrides marine areas.
Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections in the Outer Hebrides marine areas.
Given the different conditions and water depths anticipated at each site.
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 websiteThis is to inform that Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out Midel Exchange works on OSP 1 & OSP 2
This is to inform that Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out Midel Exchange works on OSP 1 & OSP 2. The works are due to start 18th / 19th March 2025 and will continue until circa 30th April 2025, these timings include weather contingency, however the operations may be subject to further extension. The works will be carried out from the Jack-Up Barge JB 117.
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 15th 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 websiteMariners are advised that Orsted Hornsea Project Four (UK) Limited (hereafter ‘Orsted’) located within the UK Sector of the North Sea, off the coast of East Yorkshire. will be commencing a scope of geophysical survey works in late March/April 2025.
The geophysical survey will include Multibeam Echosounder (MBES)/ Backscatter, Side Scan Sonar (SSS), Magnetometer (MAG), Innomar sub-bottom profilers (SBPs) and an Ultra-short baseline (USBL) acoustic positioning system will be used to calculate the position of underwater targets.
The geophysical survey works will be conducted by the following 3 survey vessels. “Ocean Endeavour”, “Titan Endeavour”, and “Ocean Researcher” as well as one support vessel “GV Jacoba”. The mobilisation of the first geophysical vessel will start 14th March 2025 and the survey operation will commence from around 1st April 2025. The works are expected to last approximately 180 days, including weather downtime. The exact survey dates are subject to mobilisation time, weather and work progress.
See detailed map on our bulletin websiteRWE Renewables UK Wind Ltd at Rampion windfarm would like to inform mariners that we are carrying out the decommissioning of the Rampion Meteorological Mast during the dates of 17th to 23rd March 2025, within the Rampion OWF Area, depending on weather conditions. The previous notice to mariners released for this work is superseded by this Notice. If works continue past this date, a further Notice to Mariners will be released.
RWE Renewables UK Wind Ltd at Rampion windfarm would like to inform mariners that we are carrying out the decommissioning of the Rampion Meteorological Mast during the dates of 17th to 23rd March 2025, within the Rampion OWF Area, depending on weather conditions. The previous notice to mariners released for this work is superseded by this Notice. If works continue past this date, a further Notice to Mariners will be released.
The work involves; removal of the topside of the structure, removal of subsea scour protection and cutting of the monopile structure below seabed level. The current outline planning is as follows:
Start Date: Subject to weather 19th March 2025. For the safety of the working party and anyone in the vicinity of the works, mariners are requested to be vigilant if approaching the below listed location and stay outside of 500m from the works operations at all times.
See detailed map on our bulletin websiteRemoval of stage 1 Construction Buoyage & Deployment of Interim Construction buoyage.
Stage 1 construction phase buoyage has now been fully removed by the MultiCat vessel Green Isle and interim construction buoyage consisting of 2x special marks have been deployed. The operational lighting and marking of the Stage 1 WTGs are now operational.
Please see attached NTM 02/2025 rev2
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 04th March 2025.
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 Seiche Limited have completed a Service on the 12 Passive Acoustic Monitoring (PAM) Stations that have been deployed on the seabed in and at locations around the East Anglia THREE Offshore Windfarm Area.
Completion of service on the 12 Passive Acoustic Monitoring (PAM) stations that have been deployed on the sea bed, in and at locations around the East Anglia THREE Offshore Windfarm Area. There is an exclusion zone of 250m around each PAM station, all marine traffic is advised to abide by the 250m safety zone and navigate with caution at all times.
For further information regarding PAM station locations, please see attached East Anglia Three Notice To Mariners 0010- 2025.
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 websiteA geophysical offshore survey for the Northern Endurance Project will take place for an estimated 4 weeks within the Endurance Survey Area. The Ocean Resolution is estimated to transit from the port of Great Yarmouth to the survey area on the 4th March 2025.
The 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 May 2025 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 websiteThe survey vessel KARINA will perform multibeam survey works along the inter array cable routes
With commencement around 01st of March 2025 and will take approximately 1 week. The works will be continuous, 24 hours a day. During operations, the KARINA 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 websiteThe survey vessel KARINA will perform multibeam survey works along the inter array cable routes
With commencement around 01st of March 2025 and will take approximately 1 week. The works will be continuous, 24 hours a day. During operations, the KARINA 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 websiteAll mariners and stakeholders are advised that construction activities will commence within the Inch Cape Offshore Wind Farm and export cable corridor on or around the 1st of April 2025.
Inch Cape Offshore Ltd will commence construction activities on or around the 1st of April 2025. Construction activities will commence with operations at the export cable landfall site. Construction effort within the main array site is expected to commence this summer. Further Notices to Mariners detailing individual work scopes will be promulgated in good time prior to works starting. Weekly Notices of Operations including a project vessel report will commence on the 1st of April 2025. These Weekly Notices will be promulgated to stakeholders and posted on the Inch Cape website, please visit www.inchcapewind.com
Offshore construction activities are expected to be completed by late 2027.
See detailed map on our bulletin websiteA UXO was found and is currently sitting in position 51'57.924'N 001'56.122'E as per NTM. This is inside the Greater Gabbard windfarm - we have no plans to remove/ move/ detonate. This has been surveyed and the risk of detonation is low however we would advise a 500m Exclusion zone
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
This Notice is to inform that one of the Green Volt Offshore Windfarm Ltd floating metocean devices (Triaxys wave buoy) broke free from its moorings on 23rd July 2024 due to being dragged by a passing vessel. Marine users should be aware that the Triaxys wave buoy’s mooring system, including the two floats remain on site and unmarked. The buoy itself has been recovered and relocated. The area provided is where the event occurred.
The mooring system consists of a 15 m rubber cord, a 60 mm polypropylene rope, two floats, another 80 m of polypropylene rope attached to bottom chains (see Figure 2). Marine users should maintain a recommended 500 metre safe clearance distance from the buffer area shown in Figure 1 due to the risk of snagging or propellor fouling. Updates will be issued via a revised Notice to Mariners when available.
UPDATE: The Mar Fortune will be mobilised on 17th January (weather permitting) to recover the mooring system. Further updates will be issued via a revised Notice to Mariners when available.
See detailed map on our bulletin websiteScottish Hydro Electric Transmission Plc and National Grid Electricity Transmission Plc are delivering the Eastern Green Link 2 (EGL 2) Project.
Ref: NtM_EGL2_O4_001_20250219
The marine survey activities for EGL 2 are due to commence on 26th of March 2025, the area is shown below in Figure 1.
The survey is estimated to take approximately 1 day, finishing on approximately the 27th of March 2025, subject to weather.
See detailed map on our bulletin websiteScottish Hydro Electric Transmission Plc and National Grid Electricity Transmission Plc are delivering the Eastern Green Link 2 (EGL 2) Project.
Ref: NtM_EGL2_O1_001_20250219
The marine survey activities for EGL 2 are due to commence on 23rd of March 2025, the area is shown below in Figure 1.
The survey is estimated to take approximately 1 day, finishing on approximately the 24th of March 2025, subject to weather.
See detailed map on our bulletin website
Mariners are advised that NKT will conduct route clearance and inspection operations along the East Anglia Three export cable corridor utilising the vessel 'Trym'.
Route clearance of out of service cables, boulders and debris will be performed between KP4 -KP148 of the East Anglia Three Export Cable Route. Inspection operations will be performed at third-party asset locations.
During periods of operation, vessel Trym will be restricted in her ability to manoeuvre. All vessels are requested to keep a minimum safe distance of 1000m from the vessel and pass at a reduced speed, fishers are requested not to deploy gear within the 500m fishing gear exclusion zone. For further information, please see attached East Anglia Three Notice To Mariners 011-2025.
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 works are planned in and around Triton Knoll Offshore Wind Farm in 2025. Please note, all dates are weather dependant:
Mariners are advised that the following vessels continue to be active at the Triton Knoll Offshore Wind Farm (TKOWF) as outlined within previously issued NtM's:
Vessel Name |
Type |
Call Sign |
MMSI |
IMO |
Operating Port |
Commence Date |
Windcat 11 | Crew Transfer Vessel | 2BIS9 | 235066459 | N/A | Grimsby | 14/12/2020 |
Esvagt Havelok | Service Operations Vessel | OYFR2 | 219026496 | 9878981 | Grimsby | 25/09/2021 |
Njord Amundsen | Support Vessel | ZDSO3 | 236112802 | 1036355 | Grimsby | 10/05/2024 |
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 |
Survey works ahead of Scottish Hydro Electric Transmission Plc and National Grid Electricity Transmission Plc delivering the Eastern Green Link 2 (EGL 2) Project.
Ref:NtM_EGL2_SW_003_20250219
The survey works for EGL 2 precedes the installation of an electricity transmission link from the East coast of Scotland (Sandford Bay, Peterhead) to the East coast of England (South of Bridlington/
Flamborough Head) due to be completed in 2029.
The survey is estimated to take approximately 13 days, finishing on approximately the 22nd of March 2025, subject to weather.
See detailed map on our bulletin websiteMariners are hereby advised that circa the 01/03/2025 the guard vessel Tess will commence guard duty operations at the East Anglia Three Offshore Windfarm area set out in section 2 of the attached Notice to Mariners.
The guard vessel ‘Tess’ will monitor vessel traffic in and around the East Anglia Three Offshore Windfarm 24hours a day, 7 days a week. The vessel will broadcast regular navigational warnings and will contact any non-project vessels they believe could cause potential hazards, risk of collision, or cause an interruption to project vessels or assets. She will be monitoring VHF Channel 16 and VHF DSC Channel 70 continuously throughout the operaton.
See detailed map on our bulletin websitePlease 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 websiteThis notice is to advise that Green Rebel has installed one (1) Floating LiDAR System (FLS) buoy at the OREC National Offshore Anemometry Hub (NOAH), approximately 3 nautical miles off the coast of Blyth, Northumberland for a minimum period of 6-months.
On behalf of Inch Cape Offshore Wind Farm, N-Sea will conduct geophysical survey operations within the Inch Cape site and export cable route.
The geophysical survey vessel, Geo Ranger is expected to arrive in the survey arera on or around the 19th of February with operations expected to continue until the end of April 25. The vessel shall deploy towed survey equipment, mariners are requested to provide Geo Ranger with at least 1000m clearance during survey operations. The fishing vessel Solstice will conduct static fishing gear scouting in relevant survey boundary areas.
See detailed map on our bulletin websiteAn offshore site survey conducted by the Ocean Observer of the proposed Morgan and Mona Offshore Wind Projects (Generation Assets) array areas was scheduled to commence on the 07-03-2025. This survey has now been delayed. The new estimated mobilisation date of the Ocean Observer is now the 14th March 2025.
These surveys will utilise Side Scan Sonar (SSS), Sub-Bottom Profiling (SBP), Magnetometry (Mag), and Multi-Beam Echo Sounding (MBES) focussed along the Inter Array Cable (IAC) routes. Following the geophysical surveys, we will carry out shallow geotechnical survey using Cone Penetration Testing (CPT) and Vibrocore (VC).
Regular lookaheads of the vessel position will be provide by the project Fishing Industry Representative (FIR).
See detailed map on our bulletin websiteMariners are advised that Ørsted Hornsea Project Three (UK) Limited (hereafter ‘Ørsted’) will be commencing a scope of Remotely Operated Vehicle (ROV) survey works in Q1 2025, for the purposes of seabed investigations within the Hornsea Project Three Offshore Wind Farm (‘Hornsea Three’) Development Consent Order (DCO) area, located within the UK Sector of the North Sea.
The survey will utilise a work class ROV deployed from a dynamically positioned (DP) vessel to investigate discrete areas of the seabed, both in the array and on the export cable route. The vessel is expected to mobilise in Rotterdam on 26th February 2025 and begin survey works on 1st March 2025, with operations anticipated to last approximately 60 days, allowing for mobilisation, survey operations, and weather contingencies.
See detailed map on our bulletin websiteThe Post Lay Burial Vessel “Normand Pacific” resumed cable burial operations at Sofia Offshore Wind Farm within the Export Cable Corridor. Guard vessels will remain onsite 24 hours per day to monitor the installed export cable until approximately the end of Q3- 2025.
All Mariners are advised that the 2 Export Cables & 1 Fibre Optic Cable (all bundled) have been installed into the HDD ducts at the Sofia HDD Landfall.
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 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 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 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 currently operating at the Sofia Offshore Wind Farm (SOWF) for this scope.
Vessel Name | Vessel Type | Length (m) | Beam (m) | Draft (m) | Gross Tonnage (T) | Call Sign | MMSI Number |
Normand Pacific | Post-Lay Burial Vessel | 122 | 23 | 7 | 9778 | 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 |
Jason II | Guard Vessel | 26.02 | 6.01 | 3.21 | 127 | MJFY4 | 232036020 |
Merlin Diver | Guard Vessel | 24.99 | 6.18 | 3.8 | 88 | YJQG4 | 576451000 |
Gleaner | Guard Vessel | 23.9 | 6.71 | 3.0 | 184 | MGGH9 | 233296000 |
Phoenix | Guard Vessel | 24.2 | 7.3 | 4.2 | 237 | MJMB2 | 2350013120 |
Star of Faith | Guard Vessel | 17.0 | - | 3.5 | - | MMSL | 234903000 |
Northern Venture | Guard Vessel | 18.45 | 6.8 | 2.76 | 110 | 2CXS3 | 235076636 |
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 |
See detailed map on our bulletin website
Please be advised that confirmed Unexploded Ordnance has been identified at the following locations. All vessels are advised to navigate with caution and keep clear of highlighted positions by a 300m radius. Please see attached notice to mariners for further information regarding exclusion zones.
Confirmed Unexploded Ordnance within the East Anglia Three CDM boundaries of the offshore windfarm array and export cable route.
See detailed map on our bulletin websiteMariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) confirms the presence of 16 confirmed Unexploded Ordnances (cUXO) as yet undetonated within the Hornsea Project Three export cable route. Hornsea Three are recommencing an EOD campaign.
The Explosive Ordnance Detonation (EOD) of these cUXO will be undertaken by a Remotely Operated Vehicle (ROV) deployed from a dynamically positioned (DP) vessel, which will have limited manoeuvrability when operational. The vessel is expected to mobilise in Great Yarmouth on 28th February 2025 and begin operations on 1st March 2025, with the activities anticipated to last approximately 45 days, allowing for mobilisation, operations, and weather contingencies.
See detailed map on our bulletin websiteDuring 14th January recovery ops, the seabed mounted echosounder and clump weight could not be located/recovered. A search was carried out across ~500m x 400m around deployed position with high resolution echosounder but could not locate items; these may have been dragged to another location. Remains of the anchor (chain links) for FLiDAR 1 could also not be found/recovered. These items are presumed lost but could potentially be a snag risk to fishermen, however do not pose a risk to navigation.
Echosounder and clump weight
A seabed mounted frame (1.6 x 1.6 m x 0.8 m, 350 kg) with echosounder inside was deployed in approx. 91 m water depth on 19th July 2024. The frame was connected with a ground line to a mooring weight/anchor (2,000 kg), which was attached to a standard spherical blue surface marker buoy with a riser to mark its position. The surface marker buoy was not visible at time of recovery operations so is thought to have broken free from the clump weight.
Photos of the echosounder frame, clump weight and surface marker buoy are attached.
The frame was designed to be overtrawlable however the clump weight was not so could pose a snag hazard.
FLiDAR 1 anchor
In April 2024, the FLiDAR buoy broke its mooring; the clump weight for this was made up of several ~1m long lengths of heavy chain bound together with a smaller chain (photo of similar set-up attached as an example). The buoy and mooring were recovered, and subsequent inspection onshore showed that the chain binding the links of heavy chain had come apart as the FLiDAR was dragged, leaving the heavy chain lengths on the seabed. These are expected to have sunk into the seabed sediment and/or have dispersed from original location. Consequently, these links of chain are not considered to pose a snag risk.
Locations of these items are in table below but note that these are deployed locations and they could have moved/been dragged from these points.
Lost item |
|
Latitude |
Longitude |
FLiDAR 1 anchor |
DMS |
57°36′28.8” N |
1°13′37.2” W |
|
DDM |
57°36.480′ N |
1°13.620′ W |
Echosounder |
DMS |
57°36′17.7” N |
1°13′36.5” W |
|
DDM |
57°36.295′ N |
1°13.609′ W |
Echosounder clump weight |
DMS |
57°36′19.6” N |
1°13′37.9” W |
|
DDM |
57°36.326′ N |
1°13.631′ W |
See detailed map on our bulletin website
The Service Operation Vessel (SOV) GRAMPIAN DERWENT will perform the Inter Array Cable Testing and Termination works with the commencement the 25th of February 2025.
The works will continue over the spring. All works will be continuous, 24 hours a day. Charts of the DBB array area are provided below.
During operations, GRAMPIAN DERWENT 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 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.
During a routine inspection of the export cables (ECR A & ECR B) , two sections of the cables were found to be partially exposed through the boulder field. This may constitute a hazard to activities such as fishing and anchoring
It is requested that mariners avoid activities which are likely to disturb the seabed within a 500m Radius of this location until the exposed export cable has been re-investigated. A further Notice to Mariners will be issued to confirm the course of action we will be taking to rectify this. Please note that the standard safety rules apply when fishing in or near wind farms and associated cables. All mariners are requested to make themselves aware of their obligations for conducting activities over buried and protected cables under International and UK Cable (Sub-sea) Protection Legislation.
Mariners are reminded to navigate with caution and keep continued watch on VHF Ch. 12 / 16 when navigating the area. The Marine Coordination Centre will be responsible for monitoring and policing the Safety Zone and can be contacted directly for advice. Further information on the risks to fishing adjacent to subsea cables can be found in Weblinks: www.kis-orca.eu https://www.seafish.org/article/kingfisher-bulletin
See detailed map on our bulletin websiteGalloper Windfarm, RWE - NTM: GWFL-O&M 03-2020 v2 Risk of cable exposure within the Galloper Windfarm
Please be advised that the subsea survey carried out in 2020, identified seven cable routes with 10 exposures in total. The below table provides the locations of the identified exposures.
As cable exposure is a known risk at Galloper and across the offshore wind industry, we would remind Mariners of the safety information found on the KIS-ORCA website ‘The risks of fishing near cables and renewable energy structures. To avoid crossing cables when towing equipment follow the cable corridors- locations of the cables can be found on the Galloper awareness charts via KIS-ORCA.
See detailed map on our bulletin websiteGalloper Windfarm, RWE - NTM: GWFL-O&M 03-2020 v2 Risk of cable exposure within the Galloper Windfarm
Please be advised that the subsea survey carried out in 2020, identified seven cable routes with 10 exposures in total. The below table provides the locations of the identified exposures.
As cable exposure is a known risk at Galloper and across the offshore wind industry, we would remind Mariners of the safety information found on the KIS-ORCA website ‘The risks of fishing near cables and renewable energy structures. To avoid crossing cables when towing equipment follow the cable corridors- locations of the cables can be found on the Galloper awareness charts via KIS-ORCA.
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
Vessels Geo Ocean VI and Geosurveyor VIII will be engaged in geophysical survey activities within a 500m corridor along the proposed Mares Connect subsea cable route.
The Geo Ocean VI will complete geophysical survey operations along the proposed Mares Connect subsea cable route, surveying a 500m corridor along the planned route. The vessel will be surveying using multibeam echosounder, side-scan sonar, magnetometer and sub-bottom profilers.
The side-sonar and magnetometer will be towed subsea at approximately 6m from the seabed, up to 4 times water depth (expected max tow 500m). One of the sub-bottom profilers will be towed behind the vessel with accompanying streamer at a distance of approximately 200-300m behind the vessel.
The closest point of approach to the vessel is 1000m due to towed equipment.
Operations are expected to commence 10th February 2025 until 4th April 2025.
The Geo Surveyor VIII will complete geophysical survey operations along the proposed Mares Connect subsea cable route, surveying a 500m corridor along the planned route from 3mLAT in Wales to 15mLAT. The vessel will be surveying using multibeam echosounder, side-scan sonar, magnetometer and sub-bottom profilers.
The side-sonar and magnetometer will be towed subsea at approximately 6m from the seabed, up to 4 times water depth (expected max tow 60m). One of the sub-bottom profiler will be towed behind the vessel with accompanying streamer at a distance of approximately 50-100m behind the vessel.
The closest point of approach to the vessel is 500m due to towed equipment.
Operations are expected to commence 17th February 2025 until 29th April 2025
See detailed map on our bulletin websiteAEC-1 Cable System break has been repaired but the Post Repair Inspection and Burial (PRIB) operation has not been completed. Hence, a section of approx. 1.5km of cable is sensitive to any external impacts and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention. Please keep a distance of 500m.
Please be advised that Partrac Ltd have completed maintenance on the Northern weather monitoring buoy, installed within the East Anglia Three Offshore Wind Farm Area.
Positions for both North & South weather buoys are identified in the attached Notice To Mariners 005 -2025. There will be periodic maintenance for both weather buoys during construction of EA3.
There is an exclusion zone of 100m around the weather buoys, mariners are advised to abide by the 100m safety zone and navigate with caution at all times.
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 completed end Aug 2024, 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 websiteMariners are advised that Orsted Hornsea Project Four (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of geotechnical survey works in February 2025. The surveys are being undertaken to perform geotechnical seabed investigations, including undertaking boreholes and CPT’s, for the Hornsea Project Four Offshore Wind Farm (‘Hornsea Four’) project, located within the UK Sector of the North Sea, off the coast of East Yorkshire.
The geotechnical survey works will be conducted by the following 3 survey vessels. “Connector”, “Geoquip Saentis”, and “Geoquip Seehorn” as well as one support vessel “GV Independent”, starting from 10th February 2025. The works are expected to last approximately 170 days, including weather downtime. The exact survey dates are subject to mobilisation time, weather and work progress.
Hornsea Four does not request any fishing gear to be cleared as the proposed activities intend to work around any fishing gear encountered. If gear is directly obstructing a sample location, Orsted may request gear relocation though this will be avoided where possible.
The contents of this notice are based upon our current understanding of Hornsea Four’s requirements
See detailed map on our bulletin websiteDeployment of one (1) Floating Seawatch Wind LiDAR buoys in the Moray Firth for the acquisition of Wind and Metocean Data for a period of 24 months.
On the 3rd of June 2023, Fugro deployed a Floating Seawatch LiDAR buoy within the Caledonia Offshore Wind Farm site for the acquisition of Wind and Metocean Data. The buoy is 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 buoy 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 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 Q3 2025. 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 websiteThe 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 websiteThe Offshore installation vessel, HLV Seaway Strashnov, has completed all but two mono-pile foundations in the Dogger Bank B offshore windfarm construction area. She will return in Q2 2025 to complete installation.
The installed monopiles are 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.
a Statutory Safety zone of 50m radius is in place around the installed monopiles. The safety zones are 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 websiteAn application has been submitted for a permanent 500 metre (m) safety zone centered around the proposed Culzean Floating Offshore Wind Turbine Pilot Project. To be in place during construction, normal operations and for periods of maintenance, and decommissioning. The precise start date and co-ordinates of the safety zones will be detailed in the Notice to Mariners prior to their implementation.
Partrac, on behalf of The Crown Estate, is planning servicing of the array of Metocean equipment deployed within three Project Development Areas (PDAs) off the coast of Wales and SW England deployed 09th - 10th May 2024. The maintenance is due to take place at PDA1, Site 1A: Floating LiDAR on Friday 13th December 2024. Note due to a communications outage, extra caution is advised around this location. Visibility of the PDA1, Site 1A Floating LiDAR may also be impaired.
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 6-months after the servicing is complete.
Partrac plans to conduct service works on the following moorings:
Additional works maybe undertaken at the Metocean array at:
The maintenance is due to take place at PDA1, Site 1A: Floating LiDAR on Friday 13th December 2024, over an estimated period of 1 day, weather permitting, with Briggs Marine Vessel, Cameron, call sign MYEK6.
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.
The 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 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).
Seabed preparatory works took place in spring and summer 2024. Further installation works will proceed from spring 2025. The exclusion area remains in force at all times.
More information about the Princess Elisabeth Island is available on the Elia website: www.elia.be/projects.
See detailed map on our bulletin websiteResearch Buoy Confirmation of Deployment Notification - Morlais Demonstration Zone.
The MachairWind Floating LiDAR buoy was re-deployed at Site 1 on 9th November 2024, following the completion of servicing works. The temporary marker installed during the servicing work has now been recovered. The Floating LiDAR buoy will remain on position until decommissioning from 28th April 2025.
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 Floating LiDAR buoy was first deployed on April 28th 2023 and is expected to remain deployed and on position until April 28th 2025. A Notice to Mariners will be published in April 2025 providing information on decommissioning of the Floating LiDAR buoy.
See detailed map on our bulletin website1x Floating LiDAR buoy with co-located wave rider buoy and seabed mounted current mooring
1x Floating LiDAR buoy, 1x wave rider buoy & 1x seabed mounted current mooring
Arven 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.
TO DOWNLOAD THIS FILE, YOU MUST AGREE TO THE TERMS AND CONDITIONS "TERMS" NOTED AT THE FOOT OF THIS WEBSITE WHICH APPLY TO YOUR USE OF THIS WEBSITE AND TO USE OF THE FILE YOU HAVE CLICKED TO DOWNLOAD. IF YOU DO NOT AGREE TO THE TERMS, YOU WILL NOT BE ABLE TO DOWNLOAD THE FILE AND YOU SHOULD NOT USE THIS WEBSITE. TO CONFIRM YOUR ACCEPTANCE OF THE TERMS AND TO COMMENCE THE DOWNLOAD OF THE FILE, PLEASE CLICK THE "DOWNLOAD" CHECK BOX. IF YOU DO NOT AGREE TO THE TERMS, PLEASE CLICK THE "CANCEL" BUTTON. YOUR ATTENTION IS DRAWN TO CONDITION 3 NOTED BELOW WHICH FORMS PART OF THE TERMS IN RELATION TO OUR LIABILITY TO YOU.
Agree and download Cancel