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Metocean Buoy Maintenance - Stromar Offshore Windfarm



Mariners are advised Stromar Offshore Wind Farm will be servicing a Floating Lidar System within the boundary of the proposed Stromar array site. The device is marked with serial number E38.


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Export Cable Survey - Gwynt y Môr Offshore Windfarm



Pre-construction survey work is due to be carried out on the Gwynt y Môr export cables close to the shore near Abergele in North Wales starting on 27th May 2024 for a period of 5 days (weather permitting).


The survey vessel Titan Discovery will be surveying an area up to 1km offshore of the HW mark close to Abergele, North Wales.  This survey is being conducted prior to maintenance work that is due to be carried out on one of the export cables later this year.  The location of the survey area is illustrated in the Notice to Mariners.

 

The survey work is due to start on the 27th May 2024 and to last up to 5 days.  These dates are subject to weather and sea conditions.

 

Vessel details

The survey work will be carried out by the vessel Titan Discovery which is a catamaran workboat measuring 13m in length, 5m beam, with a yellow hull.  Information about this vessel is given below:-

  • Titan Discovery: Research / survey vessel | Call sign 2HCR3

Survey operations will be conducted on a 12-hour basis.  The vessel will display the prescribed lights and signals for survey operations and will monitor VHF Channel 12 & 16 at all times.

During this survey the vessel may be towing equipment and will be restricted in its ability to manoeuvre. Other vessels are requested to pass at a safe speed and maintain a wide berth of at least 500m distance.

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Geotechnical Survey - Norfolk Vanguard



The “Aran 250” jack-up barge, “CT Vector” and “CRC Vanguard” support vessels will be conducting geotechnical investigations for the cable landfall for the Offshore Wind Farm Vanguard near the shore at Happisburgh Beach. Geotechnical survey works will commence in Early May (approx. 10th May).


Notice to Mariners

 

Notice of Geotechnical Survey Commencement

 

Mariners are advised that the Vattenfall Norfolk Vanguard Project will be commencing a scope of geotechnical survey works in Q2 2024, starting Early May (approx. 10th May).

 

The “ARAN 250” jack-up barge, “CT VECTOR” and “CRC VANGUARD” support vessels will be conducting geotechnical investigations for the cable landfall for the Offshore Wind Farm Vanguard near the shore at Happisburgh Beach. The “ARAN 250” will be situated for geotechnical investigations at 2 discrete locations between at 350 and 670m from the Happisburgh shoreline.

 

The “ARAN 250” jack up barge will be operating 24 hours a day during the survey works. The Fugro “ARAN 250” will be lit to allow nighttime operations and display RED_WHITE_RED lighting and shapes to indicate that it is a vessel restricted in its ability to manoeuvre.

 

The tug CT Vector will move and position the “ARAN 250”, whilst the “CRC VANGUARD” will complete crew transfers every 12 hours from the “ARAN 250” to Lowestoft.

 

The tugs will standby at Port unless required and will be conducting transits between the site and nearby ports. All vessels will all display relevant lights and shapes as required under COLREGS.

 

Proposed construction activity

 

Project works are due to commence between the 10th of May to the 17th May depending on weather.

 

Operations will be due to complete between the 17th of May to the 28th of May. These estimates include delays associated with bad weather.  

 

Vessel demobilisation due to complete between 28th of May to the 31st of May.

 

 

Safety

 

Note that the vessel will have limited manoeuvrability and it is requested that all vessels operating near the survey vessels maintain a safe distance (at least 500m) and pass at minimum speed.

 

“ARAN 250”, “CT VECTOR”, and “CRC VANGUARD” are supplied with VHF multi-channel radios and mobile phones.

 

All mariners are reminded of their responsibilities under the International Regulations for Prevention of Collisions at Sea (COLREGS).

 

It is requested that anybody having knowledge of any potential objects submerged or moored on the seabed within the construction area that could be damaged or form a hazard to the survey vessels and their equipment advises the Fisheries Liaison (contact details below) of their position and nature.

 

Survey Area for the Happisburgh Beach site

 

The table below shows the programmed works area of “ARAN 250”, dependent on weather for the period 10th of May to 28th of May 2024.

 

 

VANGUARD NORFOLK WORKS AREA

MAP MARKER / LOCATION

LAT

LON

1 - NW

52°49'28.61"N  

1°32'59.20"E

2 - NE

52°49'29.01"N  

1°33'31.94"E

3 - SE

52°49'11.47"N  

1°33'32.52"E

4 - SW

52°49'11.07"N  

1°32'59.79"E

 

Stakeholder and Fisheries Liaison contact details

 

A continuous listening watch will be conducted on VHF Channel 16 by the survey vessel. Operations will be conducted on a 24-hour basis and the Seafox 7 will have a Fisheries Liaison Representative who will engage in all communications with fishers as much as possible.

 

Fisheries Liaison Officer (FLO) Contact Details

 

Brown and May Marine (Appointed FLO)

 

Name:

Role:

Company:

Tel:

Email:

Jonathan Keer

Vattenfall Fishing Liaison Officer

Brown and May Marine

+44 7850 604851

jonathan@brownmay.com

Name:

Role:

Company:

Tel:

Email:

Molly Jones

Vattenfall Fishing Liaison Officer

Brown and May Marine

 +44 7857 500609

Molly.Jones@brownnmay.com

Name:

Role:

Company:

Tel:

Email:

Freya Sandison

Vattenfall Fishing Liaison Officer

Brown and May Marine

+44 7857 500609

freya@brownnmay.com

 

Vattenfall Contact Details

 

Vattenfall Wind Power Ltd. (Client)

Name:

Role:

Company:

Tel:

Email:

Darryl Hall

Marine Operations Manager

Vattenfall

 +44 75 27 43 13 55 / +44 18 43 42 31 07

 darryl.hall@vattenfall.com

Name:

Role:

Company:

Tel:

Email:

Maiya Medetbekova

Project Lead

Vattenfall

+45 27 87 58 09

maiya.medetbekova@vattenfall.com

Name:

Role:

Company:

Tel:

Email:

Joanne Blackwell

Project Engineer

Vattenfall

+44 7929 395849

joanne.blackwell@vattenfall.com

 

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Array Boulder Clearance and Pre-trenching Works - Sofia Offshore Wind Farm



All Mariners are advised that that the ASSO Subsea vessel “TSV Aethra” continues with boulder clearance and pre-trenching works within the Sofia Offshore Wind Farm Array.


The works are scheduled to be deployed during four visits to site (from Port of Blyth). Vessels are requested to leave a wide berth during the installation operations of at least 0.5 Nm.

 

The length of the boulder clearance and pre-trenching activities will vary depending on the execution progress, and details of any changes will be confirmed in further Notice to Mariners to be issued during the course of the project.

 

The table above provides the coordinates of the total working area of the boulder clearance and pre-trenching works at the SOWF array. 

 

The TSV Aethra shall be monitoring VHF 77 during the scope of the works and shall also be exhibiting the correct day shapes and night lights for a vessel restricted in ability to manoeuvre.

 

**Note: In the exclusion zone, temporary reduction by approx. 1 meter in navigable depth might be created from the pre-plough spoil heaps.

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

 

Vessel Name Vessel Type Length Beam Draft Gross Tonnage Call Sign MMSI Number
TSV Aethra Boulder Clearance and Pre-Trenching Vessel 94.10m 22m 7.1m 7,082 SVDM6 241831000
Enterprise II Guard / Scout Vessel 26.00m 9.2m 4.7m 421 MPFN7 232006130

 

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Scour Protection Installation Works - Sofia Offshore Wind Farm



All Mariners are advised that the Fallpipe Installation Vessel 'Nordnes' continues with Campaign 2 of the Scour Protection Works.


The Nordness will transit to and from site to replinish rock when required.

 

Two layers (armour & filter) are foreseen to be installed for the scour protection: The armour layer will be installed at all 100 WTG locations and the filter layer will be installed at 88 of the WTG locations.

 

All Mariners are requested to remain outside the works area are identified within the table above and pass at a safe speed and distance. Mariners should be aware there will be a reduction in navigable depth of up to 9% at all 100 WTG locations following the installation of the scour protection.

 

Vessel information in relation to these scope of works are outlined below;

 

Vessel Name Vessel Type Length (m) Draught (m) Call Sign MMSI Number
Nordness Subsea Rock Installation Vessel 166.70 10.51 PHOG 244962000
Enterprise II Guard / Scout Vessel 26

4.7

MPFN7 232006130
Artemis Guard / Scout Vessel 23.13 3.2 2SNV 235006582

 

The Enterprise II continues with infield and Export Cable Corridor guard vessel duties. T

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Construction of Wind Farm - Triton Knoll



Activities related to the development of the Triton Knoll wind farm continue, as detailed below. For background information visit: http://www.tritonknoll.co.uk. Mariners are advised that the asset installation phase of the Triton Knoll OWF is now complete.


Mariners are advised that the following vessels are expected to commence operations at the Triton Knoll Offshore Wind Farm (TKOWF) export cable route as outlined within recently issued NtM's

 

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Green Isle Support Vessel 2IAV3 235108183 9707962 Grimsby 10/06/2024

 

The Green Isle will work from approx. the 10m depth contour on the export cable route inwards towards shore (as outlined within ECR work area table), using an ROV. Fishers are requested to give a 500m clearance to the vessel whilst she is working in this area.

 

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
Cardinal P Support Vessel 2FKK9 235092017 - Grimsby 05/05/2024
Njord Amunsen Support Vessel ZDSO3 236112802 1036355 Grimsby 10/05/2024
CRC Vulcan Support Vessel 2EAH2 235083437 - Grimsby 20/05/2024
Glomar Worker Support Vessel 3EKK8 352110000 9344227 Grimsby 24/05/2024
Captain P Support Vessel 2FSO5 235093878 - Grimsby 22/05/2024

 

The Glomar Worker will work from approx. the 10m depth contour on the export cable route towards the wind farm and inside the windfarm, using an ROV. Mariners are kindly requested to give a 500m clearance to the vessel whilst she is working in this area.

 

The CRC Vulcan will be operating initially within area A1 using both MBES and SSS.  Future working areas will be updated in further revisions of this Kingfisher Bulletin and NtMs.

 

Work undertaken by the Cardinal P is expected to last around 7 weeks. The Captain P will be replacing the Cardinal P temporarily, whilst she is in for a repair.

 

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:

  • 500m “rolling” safety zones around any structure where construction is being undertaken (as indicated by the presence of construction vessels).
  • 50m pre-commissioning safety zones surrounding partial structures or completed structures prior to commissioning.

Mariners are advised that all foundations monopiles have been installed and all inter-array and export cables have been installed.

 

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

 

Mariners are advised that the following works are planned in and around Triton Knoll Offshore Wind Farm in 2024:

• Subsea Surveys – Approx dates between May/June 2024 for 30 days, weather permitting. Multi-beam Echo Sounder and Towed Side Scan Sonar will be used.  Further information is deatiled within the attached Notice to Mariners (TK 002:2024).

 

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WTG Upgrades / Blade Inspections and Repairs - Moray East Offshore Windfarm



Construction vessel Acta Auriga will be performing WTG Upgrades / Blade Inspections and Repairs.


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Offshore Construction - Dogger Bank B Offshore Wind Farm



Offshore Construction of the Dogger Bank B Offshore Wind Farm commenced on the 21st of April 2023 with the installation of the OSP jacket foundation. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project. The intention is to give an overview of activities and vessels involved. Should anyone have questions regarding the operations, we kindly ask you to put them forward well in advance.


OSP Commissioning works and Export Cable Pull-in

 

The DBB Offshore Substation Platform (OSP) will undergo a Commissioning phase within the Dogger

Bank B construction area. The Jack up Vessel (JUV) HEA Leviathan is now connected to

the DBB OSP by a fixed gangway. The HEA Leviathan will remain on site during the Commissioning phase, acting as the accommodation platform and OSP emergency evacuation vessel.

 

The works commenced on the 25th of April 2024 and will continue until approximately 31st of August 2023. The works will be continuous 24 hours a day. During operations, a Statutory Safety zone of 500m radius will be in place around the HEA Leviathan for the duration of the Commissioning phase of the DBA OSP. Vessels are requested to maintain a minimum safe passing distance of 1km from the HEA Leviathan during the operation. The PSV SAR Loke will carry out irregular supply runs to the HEA Leviathan.

 

The previously wet-stored export cable end, near the DBB OSP has been recovered, re-laid and then pulled into the OSP by the Cable Laying Vessel (CLV), NKT Victoria.

 

 

Monopile foundation installation works. The Offshore installation vessel, HLV Seaway Strashnov, will install mono-pile foundations in the Dogger Bank B offshore windfarm construction area. The works will commence on the 22nd of April 2024, continuing until approximately Q3 2024. The works will be continuous 24 hours a day. A chart of the DBB construction area and the foundation locations are provided below. A running list of the installed foundations and next locations are presented in the Weekly Notice of Operations. The installed monopiles will be marked with temporary lighting with the following characteristics:

• Flashing (Fl) Yellow (Y) 2.5 seconds (s) • IALA Availability Category 2 (not less than 99.0%) • 360° visibility – up to two lights per structure may be used to achieve this • At least 2 nm range. During operations,The Offshore Installation Vessel Alfa Lift will install Foundation Transition Pieces onto the monopiles, removing the temporary lighting at the same time. During operations, the HLV Seaway Strashnov and the Alfa Lift will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessels will also transmit an Automatic Identification System (AIS) message. During operations, a Statutory Safety zone of 500m radius will be in place around the HLV Seaway Strashnov and the Alfa Lift. The safety zones will be monitored by a guard vessel.

 

 

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Exclusion Zone established at H05 - Moray East Offshore Wind Farm



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) has established an exclusion zone of 500m around WTG (Wind Turbine Generator) H05. This is due to a section of fibreglass lifting on the roof of the Nacelle, which has the potential to become a dropped object.


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) has established an exclusion zone of 500m around WTG (Wind Turbine Generator) H05. This is due to a section of fibreglass lifting on the roof of the Nacelle, which has the potential to become a dropped object.

 

General Safety Advice

Advise all vessels to exercise caution when at or near the area of H05 ensuring a safe passing distance, extreme vigilance in case the fibreglass roof is dislodged and becomes a danger to navigation. Moray East Marine Coordination Centre will be monitoring the Moray East Wind Farm via AIS. If any further information is required, please contact via the details below.

 

Contact details

The following contact can provide more information if required. Please note that specific queries can also be addressed to the relevant vessel or shore-based representative.

CONTACT DETAILS

Marine Coordination Centre 24/7

Email mcc@morayeast.com

Richard Mutch – Lead Marine Coordinator Email richard.mutch@oceanwinds.com

Tel : +44 07884630427

For fisheries related matters

Alex Winrow-Giffin – Brown and May Marine Ltd. Email: alex@brownmay.com

Tel : +44 1379 872148 / +44 7760 160039

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Metocean buoy at Bellrock Offshore Wind Farm site



Please be advised that EOLOS has successfully relocated the Bellrock Floating LiDAR System buoy FLIDAR E25 on 24th February 2024. The new coordinates are shown in Table 1 in the attached. The Bellrock FLS200 E25 will remain in the Bellrock Offshore Wind Farm site for an approximate period of 24 months (i.e. until April 2025).


Please be advised that EOLOS has successfully relocated the Bellrock Floating LiDAR System buoy FLIDAR E25 on 24th February 2024. The new coordinates are shown in Table 1 in the attached.

 

The Bellrock FLIDAR E25 was initially deployed within the Bellorck Offshore Wind Farm site in April 2023, for acquisition of Wind and Metocean Data. A description of the device is presented in Section 2 in the attached.

 

The works completed on the 24th February 2024, with the Voe Earl vessel, consisted of recovering the Bellrock FLIDAR E25 device from its original location, and redeploying it at the new location (See Table 1 and Figure 1 in the attached).

 

The Bellrock FLS200 E25 will remain in the Bellrock Offshore Wind Farm site for an approximate period of 24 months (i.e. until April 2025).

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Offshore Construction - Dogger Bank A Offshore Wind Farm



Offshore Construction of the Dogger Bank A Offshore Wind Farm commenced on the 18th of March 2022. The development of the windfarm is made up of several elements - current ongoing elements  are described below in the 'full notice' and in the attached file. This notice will be updated weekly, giving information on the progress and resources involved in the offshore project.


The development of the windfarm is made up of several elements - current ongoing elements include:

 

The Offshore installation vessel, HLV Seaway Strashnov has completed installation of all 95 monopile foundations, within the Dogger Bank A construction area.  

 

The HLV Seaway Alfa Lift has also now completed TP installation in the construction area. All temporary lighting on the monopiles has been withdrawn.

 

Construction Support Activities

 

The Offshore Construction Support Vessels Edda Boreas, Grampian Tees, Grampian Derwent, Grampian Tyne, IWS Skywalker, GO Supporter and Wind Evolution will carry out construction support activities within Dogger Bank A construction site.

 

The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately 30th September 2023. The works will be continuous, 24 hours a day.

 

 

 

Wind Turbine Generator (WTG) Installation

The Jack-up WTG Installation Vessel, Voltaire, will install wind turbine generators (WTG) within the Dogger Bank A construction area. the Voltaire has completed scheduled maintenance and has returned to WTG Installation operations.

 

The works commenced on the 18th of July 2023, continuing until approximately Q4 2024.  The works will be continuous, 24 hours a day.  A running list of the completed WTG installations and the next locations to be installed is presented in the Installation progress table in the WNoO.

 

Inter Array Cable (IAC) Installation

The Cable Lay Vessel (CLV) VIKING NEPTUN will continue the Inter Array Cable laying operations in the Dogger Bank A OWF, with the third cable installation campaign. The Offshore Supply Vessel, GO Supporter will support the continuation of IAC installation. The Service Operations Vessel, Wind Evolution will continue with IAC termination and testing works. During operations, the Viking Neptun, Go Supporter and Wind Evolution will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessels will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 500m 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 area.

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Site Investigation Survey - Norfolk Windfarm Vanguard West



Please be advised of this notice advising mariners of the site investigation survey of the Norfolk Vanguard West windfarms and export cable. The Noordhoek Pathfinder and Geo Focus will be completing survey operations in UK waters. The surveys started in March 2023 and are scheduled to last until the end of July 2024 (subject to weather and additional scopes).


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WTG Debris Survey - Moray Offshore Windfarm (West) Limited



This notice to mariners is to inform that Moray Offshore Windfarm (West) Limited (Moray West) will be engaged in survey activities associated with construction of the Moray West Offshore Windfarm located on the Smith Bank in the Outer Moray Firth approximately 25NM north of Buckie.


Surveys will be undertaken by Uncrewed Surface Vessels (USVs) which are planned to sail out of Buckie, Caithness during May 2024 and into early June. Operations will take place subject to weather and other operational factors from 25th May 2024 for approximately 1 week.

A support vessel will escort the USV from the active ports to clear water.

Although the vessel itself is uncrewed, it is crewed throughout the 24-hour operation, piloted remotely using 360-degree cameras and other navigational aids.

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Site investigation survey - Norfolk Vanguard East and Boreas



RWE is required to complete a UXO survey, Geotechnical and 2DUHR campaign in relation to the installation of subsea cables and the offshore WTG’s for the future Norfolk windfarms. The export cable will terminate on the east coast of England, North of Great Yarmouth.


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Post-Lay Cable Burial Works - Sofia Offshore Wind Farm



All Mariners are advised that the Normand Pacific continues with post-lay cable burial works on the Sofia Export Cable. The exact finish dates will be dependent on the prevailing weather conditions and work progress. The Normand Pacific has now departed the project and is expected to return in Mid-June 2024 to recommence operations.


The post-lay burial (PLB) vessel “Normand Pacific” will be present for the entire scope of works. The Normand Pacific will transit from Middlesborough Support Depot and remain on site for 24hr operations. The PLB vessel will make passage to and from the support depot as required based on operational constraints.

 

The PLB will be supported by those guard vessels outlined in the table above.  Guard vessels will remain be onsite 24 hours per day to monitor the export cable until approximately the end of Q2 - 2024.

 

Exclusion zone coordinates for the 2023 to 2024 post-lay burial works are identified within the table above and remain the same for those during cable lay works as outlined in NtM 11 (rev 02).

 

The coordinates of the guard vessel locations for the post-lay burial works for Campaign 1 are detailed within the table above and attached NtM.

 

Please be aware that by virtue of mode of operation and the equipment deployed, the Normand Pacific will at times be Restricted in their Ability to Manoeuvre as defined under COLREGS (International Regulations for Preventing Collisions at Sea 1972 and shall be exhibiting the correct day shapes / lights for vessels restricted in ability to manoeuvre.

 

Mariners are requested to remain where possible 500m from vessels and equipment. Fishing vessels are requested to pass at a safe speed and distance and remain outside of the exclusion area identified. All vessels can be contacted on VHF 16 for further information as required reference proximity/nearby operations etc.

 

Mariners are advised of the following vessels operating at the Sofia Offshore Wind Farm (SOWF).

 

Vessel Name Vessel Type Length (m) Beam (m) Draft (m) Gross Tonnage (T) Call Sign MMSI Number
Normand Pacific Post-Lay Cable Burial Vessel 122 23 7.0 9778T LAXI7 257743000
Sancta Maria Guard Vessel 20.37 6 3.03 106 2FOV7 235093015
Inge Guard Vessel 29.7 6.2 3.1 192 YJSN5 577097000
Jason II Guard Vessel 26.02 6.01 3.21 127 MJFY4 232036020
Dolfijn Guard Vessel 27 6.2 3.1 99 YJQL8 576697000
Mary Ann Guard Vessel 32.7 7 3.6 53 YJTV2 577256000
Venus II Guard Vessel 24 7.4 3.15 145 HP9337 370046000
Walvis Guard Vessel 27 6.4 3.32 108 YJQG3 576448000
Flamingo Guard Vessel 31 7 3.5 159 YJVW2 576259000
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
Karima Guard Vessel 26.10 6.0 4.0 88 MPKV5 232006310
Merlin Diver Guard Vessel 24.99 6.18 3.8 88 YJQG4 576451000
Enterprise II Guard / Scout Vessel 26 9.2 4.7 421 MPFN7 232006130
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Sofia OWF - Offshore Converter Platform Survey Works



All Mariners are advised that the survey vessel “Glomar Supporter” will be undertaking non-intrusive seabed survey works within the Sofia Array. Works are expected to commence week commencing 22nd April 2024 and are expected to take approx.7days (weather permitting).


The Glomar Supporter shall be operating within the Sofia OWF Exclusion Zone coordinates, as detailed below.

 

The Glomar Supporter shall be exhibiting day signals and night lights identifying a Vessel Restricted in its Ability to Manoeuvre. All vessels are requested to give a wide berth. Glomar Supporter can be contacted on VHF 16 when infield.

 

Glomar Supporter will be transiting to Sofia Offshore Wind Farm from Great Yarmouth.

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

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Infield Array Works - Sofia Offshore Wind Farm



All Mariners are advised that from around 06th May 2024 for a period of approx. one year, (weather permitting), the TSV Subsea Viking will be undertaking PLGR, Trenching Trials, Pre-Trenching and Post Trenching Works, Rock Bag Installation and Survey Works in the Sofia Offshore Wind Farm Array.


The table below provides the coordinates of the total working area of works to be undertaken by the Subsea Viking. 

 

The vessel shall be transiting to / from the Sofia Array from the Port of Blyth throughout this period.

 

Vessels are requested to leave a wide berth during the installation operations of at least 0.5 Nautical Miles. 

 

The length of Subsea Viking activities will vary depending on the execution progress, and details of any changes will be confirmed in further Notice to Mariners to be issued during the course of the project.

 

Mariners should be aware that some aspects of the work may result in a temporary reduction in navigable depth greater than 5%. Once installed, the cable protection system stabilisation is expected to have a reduction in navigable depth greater than 5%, localised in close proximity to the WTG.

 

The Subsea Viking shall be monitoring VHF 16 / 77 during the scope of the works and shall also be exhibiting the correct day shapes and night lights for a vessel restricted in ability to manoeuvre. The vessel will be operating 24 hours per day.

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

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Foundation Installation Works & Noise Monitoring Works - Sofia Offshore Wind Farm



All Mariners are advised the Subsea Viking carried out the placement of the moorings and subsequent noise monitoring equipment within the Sofia Offshore Wind Farm Array and remains on site to monitor equipment. The Subsea Viking may potentially commence jetting trials. The Wind Turbine Installation Vessel 'Aeolus' continues with Foundation Installation Works within the array site.


Noise Monitoring Works

The Subsea Viking will commence deployment, operation and retrieval of noise monitoring stations deployed within the Sofia Offshore Wind Farm Array. Five stations will be deployed for the purpose of noise monitoring during the first four monopile foundations installation. Each station consists of two chain anchor blocks, a buoy including a Fl (5) Y 20s navigation light with nominal range of 2nm, and a hydrophone. The noise monitoring buoy and mooring schematic are outlined within the relevant Notice to Mariners (NtMs).

 

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.

 

The following table highlights foundation installation progress and forecast.

 

Total Foundations Installed

(100 in Total)

Foundations Installed Last 7 Days Foundations Installed Next 7 Day Forecast
3 3 - (K01, L01, M01) 3 - (S05, Q05, P01)

 

 

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.

 

Vessel will be transiting to Sofia Offshore Wind Farm field from port of Tyne in the UK.

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

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Demarcation / Met-Ocean Buoys - Sofia Offshore Wind Farm



All Mariners are advised that the “Mar Fortune” continues with the service works as required on demarcation buoys within the Sofia Offshore array.


The Kingdom of Fife and Voe Earl are currently off location, but are expected back in field in due course.

 

The Met-ocean buoys at KP2 has already been removed and the metocean buoy at KP40 on the Export Cable Route will also be permanently recovered. There will also be an additional three Met-ocean buoys installed within the Sofia Offshore Windfarm Array as well as an additional met-ocean buoy at KP180 along the export cable route.

 

Vessels will be working daylight hours only and shall be monitoring VHF 16 during the scope of the works and shall also be exhibiting the correct day shapes and night lights for a vessel restricted in ability to manoeuvre.

 

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

 

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

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° 59.756' 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 KP2 (From Shore) 54 36.508N 001 00.175W June 2023 Now recovered
Export Cable KP8 54 36.584N 000 54.674W June 2023 Will remain in position until further notice
Export Cable KP40 54 40.524N 000 26.735W June 2023 Will be recovered permanently
Export Cable KP130 54 50.543N 000 54.689E June 2023 Will remain in position until further notice
Export Cable KP180 TBC TBC March 2024 Will remain in position until further notice
SOWF Array North 55° 5.392' N 002° 12.993' E June 2023 Will remain in position until further notice
SOWF Array South 54° 54.987' N 002° 15.585' E June 2023 Will remain in position until further notice
SOWF Array East 54° 58.160' N 002° 22.521' E March 2024 Will remain in position until further notice
SOWF Array West 55° 01.528' N 002° 04.052' E March 2024 Will remain in position until further notice
SOWF OCP 55° 00.439' N 002° 14.798' E March 2024 Will remain in position until further notice

 

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Navigation Warning Off Station Cardinal Buoy - Sofia Offshore Wind Farm



Mariners are advised that the an East Cardinal Buoy (E4) marking the perimiter of the Sofia OWF array was reported off station and has since been recovered. The Mar Fortune is currently on site and continues with the service campaign on the infield demarcation buoyage.


It is expected that the mooring remains in position at the as built location. All components are expected to be on the seabed, however please avoid the area by 100m until further notice.  Water depth at this location is 27m LAT.

 

Further details are detailed below.

 

Buoy ID Latitude Longitude Characteristics
East Cardinal E4 54° 55.085’ N 002° 26.631’ E
  • Pillar shaped with an east cardinal shaped top mark
  • Exhibiting a V Q (3) 5s light character

 

Depedning on Ma Fortune work progress, the Voe Earl may be on site for the reinstatement of the East Cardinal Buoy “E4”.

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

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Navigational Warning - Demarcation Buoys - Sofia Offshore Wind Farm



Mariners are advised that a number of the Perimeter Buoyage that demarcates the Sofia Offshore Wind Farm as an area under construction have the Top Marks missing. There are also now 3 (three) perimeter buoys that have extinguished lights. The Mar Fortune is currently on site and continues with the service campaign on the infield demarcation buoyage.


Those demarcation buoys that are now an unlit hazard during hours of Darkness are outlined below;

  • N1 - 55° 08.13’ N x 002° 09.52’ E
  • SP2 - 55° 06.57’ N x 002° 05.76’ E
  • E5 - 54° 51.52’ N x 002° 20.71’ E

As N1 & SP2 are adjacent to each other, the Guard Vessel “Enterprise II” will position themselves in this vicinity during the hours of darkness (weather permitting) to monitor vessel traffic movements in the area and direct any vessels away from the unlit hazard.

This will be supplemented with regular safety broadcasts from the Enterprise II. The Guard Vessel will also monitor the array via AIS and Radar.

 

Sofia MCC will also monitor the Sofia Offshore Array remotely via AIS and has initiated triggered guard zones within areas of concern.

 

It is expected that the remedial programme will commence in approx. 7 days (weather permitting).

 

The "Enterprise II” continues with infield and Export Cable Corridor guard vessel duties.

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Cable Landfall and Cable Lay Works - Sofia Offshore Wind Farm



All Mariners are advised that from around 24th May 2024 (weather permitting), the Ocean Energy will perform Controlled Flow Excavation operations along the assigned export cable corridor from the HDD pits out to KP3 on the export cable trench. The exact start and finish dates will be dependent on the prevailing weather conditions. The Celtic Guardian has commenced nearshore MBES survey works and shall be travelling daily to the works site from Hartlepool Dock.


The Capall Mara will also be utilised from 26th May 2024 as a diving platform to support grouting activities on the export cable HDD ducts.

 

The Capall Mara and Ocean Energy shall be travelling daily to the works site from Port of Middlesbrough. Both vessels may remain on site for longer periods but will make passage to and from Port as required based on operational weather constraints.

 

The Celtic Guardian shall be travelling daily to the works site from Hartlepool Dock.

 

Construction works will be carried out on a 24hr basis as required.

 

The table below is specific to the exclusion boundary in place for the construction works from the HDD pits out to KP3. Vessels are requested to leave a wide berth during the installation operations.

 

The 2 Export Cables & 1 Fibre Optic Cable (all bundled) have been installed into the HDD ducts at Landfall (Marske by The Sea). 

 

Guard vessels will remain be onsite 24 hours per day to monitor the export cable until approximately the end of Q2- 2024.

 

Exclusion zone coordinates for 2023 cable pull-in and cable lay works are detailed within the table above and relevant Notice to Mariners.

 

The coordinates of the guard vessel locations for the cable pull-in and cable lay works for Campaign 1 are detailed within the table above and attached NtM.

 

Mariners are requested to remain where possible 500m from the vessels and leave a wide berth during the installation operations. Fishing vessels are requested to pass at a safe speed and distance and remain outside of the exclusion area identified.

 

Vessels will be monitoring VHF 16 during the scope of the works and shall also be exhibiting the correct day shapes/ lights and flag for vessels engaged in diving operations and restricted in ability to manoeuvre.

 

Special Marker Buoys (SMB) will be in place to mark the HDD works area and will remain in place until completion of the export cable landing activities. The locations of these SMBs are detailed in the above table and attached NtM.

 

***Within the working area there may be a temporary reduction in navigable depth up to 2m due to excavated material being placed in spoil heaps***

 

***Please note that the Ocean Energy (Multicat) has recovered 3 of the 4 (A / B / D) anchors from the seabed nearshore HDD Pits and only one anchor remains in situ on the seabed at the HDD Pit in position “C”***

 

The Ocean Energy (Multicat) may attempt to recover the remaining anchor (C) from the seabed nearshore HDD Pits.

 

Mariners are advised of the following vessels commencing operations at Sofia Offshore Wind Farm (SOWF).

 

Vessel Name Vessel Type Length (m) Beam (m) Draft (m) Gross Tonnage (T) Call Sign MMSI Number
Ocean Energy Multicat 22.04 9.04 3.2 102 MNKI5 232046909
Capall Mara Dredger 39.6 14 2.5 498 MBSF3 232010652
Celtic Guardian CTV 14 4.3 0.7 9.5 2IZH5 235114006
Sancta Maria Guard Vessel 20.37 6 3.03 106 2FOV7 235093015
Inge Guard Vessel 29.7 6.2 3.1 192 YJSN5 577097000
Jason II Guard Vessel 26.02 6.01 3.21 127 MJFY4 232036020
Dolfijn Guard Vessel 27 6.2 3.1 99 YJQL8 576697000
Mary Ann Guard Vessel 32.7 7 3.6 53 YJTV2 577256000
Venus II Guard Vessel 24 7.4 3.15 145 HP9337 370046000
Walvis Guard Vessel 27 6.4 3.32 108 YJQG3 576448000
Flamingo Guard Vessel 31 7 3.5 159 YJVW2 576259000
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
Karima Guard Vessel 26.10 6.0 4.0 88 MPKV5 232006310
Merlin Diver Guard Vessel 24.99 6.18 3.8 88 YJQG4 576451000
Enterprise II Guard / Scout Vessel 26 9.2 4.7 421 MPFN7 232006130

 

The table below also provides the position and description of any equipment/asset/item that will remain in place following demobilisation of the Ievoli Ivory.

 

Location Equipment and Description Latitude Longitude Approximate Depth (LAT)
A

Concrete mattresses

3 of 5.95 m x 2.95 m x 0.30 m

54°38.544’ N 000°35.147’W 55m
B

Concrete mattresses

1 of 5.95 m x 2.95 m x 0.30 m

54°38.572’ N 000°35.142’W 55m
C

Concrete mattresses

2 of 5.95 m x 2.95 m x 0.30 m

1 of 5.55 m x 2.95 m x 0.50 m

54°48.144’ N 000°37.515’E 74m
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Maintenance of Floating LiDAR buoy and removal of Metocean Equipment



A Floating LiDAR buoy, surface metocean equipment buoys and seabed landers were deployed to assist with the development of MachairWind Offshore Wind Farm. Following the completion of a twelve month data collection campaign, the surface metocean buoys and seabed landers will be removed. The Floating LiDAR buoy will be serviced and remain deployed for a further twelve months. The Bommelbas (Call Sign: LLGZ) will be used for maintenance and removal activities, mobilising from the Port of Kishorn.


The Floating LiDAR buoy and surface metocean equipment buoys are tethered to the sea bed with single mooring lines. The Seabed Lander is a frame anchored on the seabed, approximately 1.7 m diameter and 0.6 m high.

 

The Bommelbas will retrieve all surface metocean equipment and seabed landers equipment components to deck for removal to port as part of the decommissioning activities. The Floating LiDAR buoy will be temporarily retrieved to deck for maintenance activities and redeployed at Site 1. A revision of this notice to mariners will be distributed providing confirmation of the redeployment coordinates for the Floating LiDAR buoy.

 

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.

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Floating LiDAR and Metocean Survey Deployment - MachairWind Offshore Wind Farm



A floating LiDAR buoy, surface metocean equipment buoys and seabed landers have been deployed at two sites to assist with the development of MachairWind Offshore Wind Farm. The floating LiDAR buoy and metocean equipment was deployed between 28th April – 29th April 2023 by Fugro from the Port of Burntisland. The Forth Warrior vessel deployed the floating LiDAR and Metocean survey equipment. Mariners are requested to keep a distance of 500 metres from the Site 1 and Site 2 deployment locations.


The floating LiDAR buoy, surface metocean equipment buoys and seabed landers have been deployed at two separate locations. The equipment deployed will gather wind and metocean data which will be used to inform the development of the Project.

 

The Floating LiDAR  buoy , Metocean Midi Buoy and Metocean Wavescan Buoy are all surface buoys, tethered to the sea bed with single mooring lines. The Seabed Lander is a frame anchored on the seabed, approximately 1.7 m diameter and 0.6 m high. 

 

The Floating LiDAR buoy, Metocean Midi Buoy and Metocean Wavescan Buoy have light marking characteristics comprising FI (5) Y 20s with a nominal range of 5 nautical miles.

 

Surface equipment at Site 1 and Site 2 are transmitting their locations via AIS.

 

Equipment details and mooring designs of the floating LiDAR buoy, metocean buoys and seabed lander are provided in this notice to mariners.

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Geotechnical Survey - Eastern Green Link 4 (EGL4) project



Mariners are advised that marine environmental surveys and geotechnical surveys are planned for the Eastern Green Link 4 (EGL4) project. The marine survey activities for EGL 4 are expected to commence early June 2024 and complete by late August 2024.


Eastern Green Link 4 is a HVDC electricity transmission interconnector between Scotland and England, a joint venture between National Grid and Scottish Power Transmission (SPT).

 

The EGL 4 project will play a vital role in achieving the UK and Scottish governments net zero targets and significantly increase the UK’s capacity for clean, green renewable power.

 

The marine survey works are being carried out by GEOxyz and require a minimum of 500m exclusion zone around their vessels. Static fishing gear is not being requested to be relocated.

 

The survey vessel contacts details for the project found in Table 1. Contact details for the project Fisheries Liaison Officers are detailed at the end of the document.

 

The static intrusive survey works are being carried out by GEOxyz using the following vessel:

Survey vessel:

Geo Ocean III (MMSI: 253596000; Call Sign: LXGP)

Geo Ocean IX (MMSI: 341182001; Call Sign: V4IG5)

 

Vessels and their contact details are given in Table 1 below.

 

Vessels are requested to pass at a safe speed and distance, whilst fishing vessels are requested to remain a safe distance (approximately 550m or 0.3 nautical miles) (COLREGs Rule 16 & 18) from the areas identified during marine survey operations. The aforementioned survey vessels will be restricted in their ability to manoeuvre and shall deploy static survey equipment.

 

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

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Component Exchange - Hywind Scotland Windfarm



Hywind Scotland windfarm will be undertaking a major component exchange on all 5 x Turbines starting 11th April 2024.


Hywind Scotland windfarm will be undertaking a major component exchange on all 5 x Turbines commencing 11th April 2024. This work will involve the complete disconnection of the mooring lines and electrical cabling which will be lowered and temporarily secured to the seabed, prior to towing each turbine back to Wergeland in Gulen, Norway. The project is due to last around 4 months in total; however there should be some expectation of weather delays therefore some contingency should be applied to the planned dates.

The Service Operation Vessel (SOV), Island Diligence will remain in the windfarm for the duration of the project to carry out all preparatory works. This vessel will also act as the supporting guard vessel as operations are likely to take place 24/7 during the project period. The SOV will be supported by 3 x Anchor Handling Vessels (AHV), Normand Sapphire, Normand Sigma and Skandi Vega. These vessels will be towing the turbines to Norway and then back from Norway after repair.

The Crew Transfer Vessel (CTV) MCS Swath and Goath Na Mara are contracted for normal service operations will support in the field with crew transfers and additional transport requirements 24/7.

As the windfarm area will be extremely busy with vessel movements and operations it is recommended that this area is restricted for entry for any vessels that are not involved in the project.

 

Subsea structures will remain in place once a turbine has been removed, therefore the below locations should be avoided at all times.

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Major Component Exchange - Hywind Scotland windfarm



Hywind Scotland windfarm will be undertaking a major component exchange on all 5 x Turbines commencing 11th April 2024. This work will involve the complete disconnection of the mooring lines and electrical cabling which will be lowered and temporarily secured to the seabed, prior to towing each turbine back to Wergeland in Gulen, Norway.


Hywind Scotland windfarm will be undertaking a major component exchange on all 5 x Turbines commencing 11th April 2024. This work will involve the complete disconnection of the mooring lines and electrical cabling which will be lowered and temporarily secured to the seabed, prior to towing each turbine back to Wergeland in Gulen, Norway. The project is due to last around 4 months in total; however there should be some expectation of weather delays therefore some contingency should be applied to the planned dates. The Service Operation Vessel (SOV), Island Diligence will remain in the windfarm for the duration of the project to carry out all preparatory works. This vessel will also act as the supporting guard vessel as operations are likely to take place 24/7 during the project period. The SOV will be supported by 3 x Anchor Handling Vessels (AHV), Normand Sapphire, Normand Sigma and Skandi Vega. These vessels will be towing the turbines to Norway and then back from Norway after repair. The Crew Transfer Vessel (CTV) MCS Swath and Goath Na Mara are contracted for normal service operations will support in the field with crew transfers and additional transport requirements 24/7. As the windfarm area will be extremely busy with vessel movements and operations it is recommended that this area is restricted for entry for any vessels that are not involved in the project. Subsea structures will remain in place once a turbine has been removed, therefore the below locations should be avoided at all times

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Inter Array Cable Post-Lay Burial Operations - Dogger Bank A Offshore Wind Farm



The Multi-Purpose Offshore Vessel, Livingstone, will resume Inter Array Cable Post-Lay Burial operations in Dogger Bank A Offshore Windfarm Area


This campaign will commence on the 05th of June 2024 and continue until approximately 30th of July 2024. The works will be continuous, 24 hours a day.

 

The operations include the post lay burial operations for part of the array cable routes, by means of jetting and mechanical cutting in order to protect the inter-array cables.

 

During operations, the Livingstone 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 TSV and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

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Route Clearance & Pre-Lay Grapnel Run - 2 Africa Cable Project - Bude



Vessel 'Ile De Batz' is due to return to UK waters to carry out Route Clearance & Pre-Lay Grapnel Run for 2Africa Project. Vessel speed for RC / PLGR is approx. 17km / day. Vessel will be towing grapnel therefore will have limited maneuverability.


Vessel - Cable Vigilance IMO - 9247041 Operations: Route Clearance Operations will be conducted to the laying and buria operations. This operation is to ensure that as far as practically possible, the burial operation will not be interrupted.  RC will be performed at specific locations, in areas with planned burial where old Out-of- Service (OOS) cables are known to cross the cable route. The vessel will remove a suitable section of this old cable to ensure safe ploughing. The cable ends of any cut out-of-service cables will be laid onto the seabed and weighted, in accordance with ICPC recommendations. PLGR is required in planned burial areas prior to cable installation (approx 221km). The PLGR operation will be to industry standards employing towed grapnels; the type of grapnel being determined by the nature of the seabed. This process will remove all debris on the seabed surface (e.g. old fishing net, rope/wire, anchor chain) that may obstruct the ploughing process. Sea bed debris can damage cable and burial equipment. The PLGR vessel will operate as close to shore as possible. Divers will remove debris near shore or adjust the cable route if debris cannot be removed. Any debris recovered during these operations will be discharged ashore on completion of the operations and disposed of in accordance with local regulations. RC and/or PLGR operations can be performed by the cable ship or by a vessel of opportunity specifically fitted with winches and grapnels. The vessel will be equipped with navigation and positioning system to the same specification as the main lay vessel.

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Metocean Equipment Deployment - Wales & Southwest England



Partrac, on behalf of The Crown Estate, has deployed an array of Metocean equipment, including three Floating LiDAR (EOLOS FLS200) buoys, as part of a Metocean Survey. The equipment was deployed on 09th -10th May 2024 at three sites located off the coast of Wales and Southwest England. The equipment will remain deployed for a period of 12 months (excluding servicing).


Mariners are advised that Partrac, on behalf of The Crown Estate, has deployed an array of Metocean equipment, including three Floating LiDAR (EOLOS FLS200) buoys, as part of a Metocean Survey. The equipment was deployed between 09th and 10th May 2024 within three Project Development Areas (PDAs) located off the coast of Wales and Southwest England (Table 1, Figure 1 to Figure 3). The equipment will remain deployed for a period of 12-months with 3-monthly servicing intervals.

Note: Site 1A Wave bouy is currently off location. The bouy will be re-deployed from approximately 03rd June 2024 (exact date TBD).

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Anchor on Seabed - Dogger Bank A Offshore Windfarm



An anchor and part of the shaft remains on the seabed at a depth of 26m at 'spare' WTG location on the periphery of Dogger Bank A Offshore Windfarm.


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Ile De Batz - Shore End Landing - Bude - Widemouth Bay



Vessel Ile De Batz will carry out a shore end landing for 2Africa Project offshore Bude - Widemouth Bay


The Cable Ship is dynamically positioned at a water depth between 12m and 16m (depending on sea conditions). This is normally between 500m and 2500m from the coast.  • The vessel firstly sends a floating rope to the landing ashore. • The shore end crew attach this line to a pulling device (an excavator, winch, or similar). • The line is then attached to the Submarine cable (kept afloat by buoys), and pulled ashore. • The line is then pulled ashore through a Horizontal Directional Drill (HDD) pipe •  Divers will then detach the buoys and position the cable on the seabed.  • The buoys are then returned to the vessel. • The vessel is then ready to lay the cable (in the direction away from the shore) or has then completed the lay (direction into shore).   This operation usually begins at day break and is completed within one day (subject to conditions).  

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Plough Trials - UK EEZ - Ile De Batz - Celtic Sea



Ile De Batz will call to UK EEZ to carry out some Jetting Plough along the 2Africa cable route. Jetting Plough trials will be carried out to test the plough equipment is ready for next plough burial operations. once vessel has arrived in trials area, vessel will perform a PLGR run to clear the area from obstruction, then will deploy the plough with some test cable. 


Vessel: Ile De Batz IMO: 9247041  

An industry-standard cable plough weighs approximately 30 tonnes in water. It is deployed from the stern of the installation vessel and towed behind the ship, burying the cable into the seabed as it progresses along the route. Burial is achieved using a share blade: as the plough is towed through the seabed, it lifts a triangular wedge of soil and depresses the cable into the cut trench; as the plough progresses forwards, this sediment falls back into the trench to cover the cable. The process of lifting and replacing the wedge of sediment is continuous and results in very little disturbance to the soil inside the wedge. When all equipment has been checked, plough and test cable will be recovered onboard. Continuous  video & sonar monitoring of the plough operation from the vessel allows the plough to avoid hazards or features of interest, whether these are pre-identified or unexpected.  

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Offshore Geophysical Survey Operations - Eastern Green Link 2



The marine survey activities for EGL 2 recommenced on 5 April 2024 , starting offshore in English waters and are currently working south towards Bridlington following the route shown in Figure 1. It is proposed that the survey activities will then return to Scottish waters at the end of May/early June working south from Peterhead, Scotland. The survey is due to be completed by the end of June 2024, subject to weather.


Mariners are advised about Marine Survey Works for the Eastern Green Link 2 Project.

 

Scottish Hydro Electric Transmission Plc and National Grid Electricity Transmission Plc are delivering the Eastern Green Link 2 (EGL 2) Project.

The EGL 2 project will play a vital role in achieving the UK and Scottish Government’s net zero targets and significantly increase the UK’s capacity for clean, green renewable power.

 

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 EGL 2 marine survey works are being carried out by GeoXYZ with the survey vessel ‘Geo Ocean III’ and support vessel ‘GV Fortuna’.

 

The area of work, pertaining to this Notice to Mariners (NtM) is illustrated in Figure 1 and Table 1, with the survey and support vessel contact details found in Tables 2 and 3. Contact details for the project’s Fisheries Liaison Officers are detailed below.

 

The marine survey activities for EGL 2 are planned to recommence on 5 April 2024 , starting offshore in English waters before working south towards Bridlington in May following the route shown in Figure 1. It is proposed that the survey activities will then return to Scottish waters working south from Peterhead, Scotland at the end of May. The survey is due to be completed by the end of June 2024, subject to weather. 

 

The works consist of a detailed geophysical survey for the purposes of identifying potential unexploded ordnance. There are no intrusive works planned nor will there be any unexploded ordnance investigation or detonation works. The vessel will be towing equipment close to the seabed and will have restricted manoeuvrability.

 

All vessels are requested to pass at a safe speed and distance, approximately 500 metres where possible (COLREGs Rule 16 & 18) from the areas identified during marine survey operations. The survey vessel will be restricted in her ability to manoeuvre and shall deploy towed sensors during geophysical survey operations only. The survey vessels will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed at the end of this NtM.

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Marine Survey Activities - Rattray Head & Outer Moray Firth



Mariners are advised of coastal marine survey activities at Rattray Head & outer moray firth from 4th to 24th May 2024. The vessel shall be restricted in her ability to manoeuvre, tethered ROV and/or over the side equipment will be in use. Keep well clear of the vessel whilst under survey operations.


Description of works:

• The vessel will be working through daylight hours only.

• Vessel-mounted and towed equipment may be in use for the purposes of geophysical survey of the seabed and subsurface.

• The survey vessel is likely to be steaming a pattern of regular parallel lines, and as such may make sudden unpredictable changes of course, including sudden changes of course onto reciprocal headings.

 

Mariners are advised to provide the survey vessel with ample clearance, ideally 1000m.

 

Mariners are advised to exercise caution and follow any additional instructions provided.

 

The vessel will maintain a listening watch on VHF Channel 16

 

The survey office may be contacted via telephone on 01857-595-595

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Uncrewed Surface Vessel (USV) Survey Operations - Irish Sea, North Wales Coast



Operation of a remotely piloted Uncrewed Surface Vessel (USV) are planned in the Irish Sea during May 2024. The vessel will be engaged in cable inspection survey activities relating to a local offshore wind farm in the Irish Sea approximately 3.5nm North East of Rhyl, North Wales coast.


Dates: Survey operations are expected to start subject to weather and other operational factors from Wednesday 16 May for approximately 3 days. Location: Although the USV is uncrewed, it is managed throughout the 24 hour operation, piloted remotely using 360 degree cameras and other navigational aids. 

In addition to the survey area, the USVs will transit from/to Whitehaven.

 

 Vessel Details Name: X 26 UNCREWED MMSI: 232052508 Length: 4.5m Beam: 2.2m Speed: 3.5kts Draught: 1.5m Tonnage: 750kg

 

The USV sends real time images and situational awareness data over satellite to a team of operators keeping watch and controlling the vessel remotely 24/7.

Safety Precautions: The USV is equipped with the following to make it conspicuous to other marine traffic:

â–ª AIS

â–ª Navigation Lights & Sound Signal

â–ª Active Radar Reflector

â–ª Superstructure Painted Yellow

 

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

 

XOCEAN Emergency Contact Details:

â–ª USV Supervisor +353 (0) 42 94 28119 usv.supervisor@xocean.com

â–ª  Rhiannon Evans (Project Manager) +44 (0) 7817 485935 rhiannon.evans@xocean.com

â–ª Oliver Harris (Head of Projects) +44 (0) 7549 555961 oliver.harris@xocean.com

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Lifting Operations - Humber Gateway Offshore Wind Farm



Jack Up Vessel JV Wind Pioneer (Callsign OWLA2) is conducting lifting operations from 30th May until 30th June 2024 at Humber Gateway Offshore Wind Farm


Please be advised that the Vessel JV Wind Pioneer, IMO NO. 8660222, will arrive on site 30th May 2024 and depart 30th June 2024 (programme and weather dependent).

 

During this period she will conduct lifting operations at WTG C12 within the Humber Gateway Wind Farm boundary.

 

The location of WTG C12 is 53° 38.8768’N 000° 17.3383’E

 

She will be accompanied by an additional windfarm support vessel and will be under tow by tugs to the wind farm boundary.

 

The JV Wind Pioneer is a four legged non-self propelled jack up vessel and is restricted in its ability to manoeuvre.

All Vessels in the area are requested to give the JV Wind Pioneer a 500m wide berth during these operations.

 

The JV Wind Pioneer will be monitoring VHF channels 16, 14 and the Humber Gateway Working Channel.

JV Wind Pioneer call sign is OWLA2

JV Wind Pioneer MMSI is 219017684

 

For further information please contact Humber Gateway Control Room on +44 (0)7891 412139 or Email: humbergateway.controlroom@rwe.com

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Passive Acoustic Monitoring Device - Spiorad na Mara Offshore Wind Farm



The Scottish Association for Marine Science (SAMS) has successfully deployed a Passive Acoustic Monitoring Device (PAM) on behalf of Spiorad na Mara Ltd. A second PAM was deployed on the 11th May The PAMs will be deployed on site over a period of 9 months within the Spiorad na Mara offshore wind farm site.


Positions of equipment can be seen in Figure and Table 1 of attached. 

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Abandoned fishing equipment/seabed fastener - Exa Hibernia Segment C



Fouled fishing equipment. Following on from a repair completed to the Hibernia/Exa Dublin – Southport cable, abandoned trawl equipment fouled on the seabed and very close to the submarine cable has been identified in position 53 48.2166N  04 28.7343W


All fishermen are strongly advised to avoid fishing in this area, giving a minimum clearance of 0.25 nautical miles from this abandoned fishing equipment, to avoid risk of further fouling and/or entanglement with the Hibernia/Exa cable and therefore possible endangerment to the vessel and its crew.

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Unmanned Surface Vessel(USV) - Scarborough and Grimsby



Activity: Operations of remotely piloted Uncrewed Surface Vessels (USVs) are planned out of Scarborough and Grimsby commencing mid-late May, continuing until end of June 2024. The vessels will be engaged in geophysical survey activities associated in the North Sea.


Dates: Operations will take place subject to weather and other operational factors from 24 May 2024 until the end of June 2024. A support vessel will escort the USVs from the active ports to clear water. It is anticipated that up to 4 USVs will be operational at any one time.

 

Although the vessel is uncrewed, it is crewed throughout the 24 hour operation, piloted remotely using 360 degree cameras and other navigational aids.

 

In addition to the survey area, the USVs will transit from one of the named ports above to site.

 

Fisheries Liaison for this survey will be co-ordinated by Natural Power. All commercial fishery queries, should be directed to Peter Berney or Hollie Maven; Mobile T: 07391402387 / Email: Ossian.FLO@naturalpower.com. XOCEAN will not be requesting fishing gear clearance at this time.

 

The USV’s will operate around all fishing activities. Up to two vessels will be operating towed equipment to gather data on the seabed. The vessels will be restricted in their ability to manoeuvre, and mariners are advised to maintain a safe distance of 500m.

 

The USV sends real time images and situational awareness data over satellite to a team of operators keeping watch and controlling the vessel remotely 24/7. Safety Precautions: The USV is equipped with the following to make it conspicuous to other marine traffic:

 AIS

 VHF

 Navigation Lights & Sound Signal

 Active Radar Reflector

 Superstructure Painted Yellow

 

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

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Export Cable Corridor Geophysical Survey - Thistle Wind Partners Bowdun (E3) Offshore Wind Farm



Thistle Wind Partners are developing the proposed Bowdun (E3) Offshore Wind Farm. The MV Ondine Jule, on behalf of Thistle Wind Partners (TWP), is undertaking a Geophysical survey of the proposed Bowdun (E3) Offshore Wind Farm Export Cable Corridor. The purpose of this Notice to Mariners (NtM) is to update the working area for the survey vessel and, outline the scope of work. The survey will utilise the vessel MV Ondine Jule.


The MV Ondine Jule will be conducting a Geophysical survey over Bowdun (E3) Export Cable Corridor Area utilising towed sensors. During the survey the vessel will be operating at approximately 4 knots with equipment being towed at a distance of up to 300m astern of the vessel.

 

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

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Geophysical Survey - Thistle Wind Partners proposed (E3) Offshore Wind Farm



Thistle Wind Partners are developing the proposed Bowdun (E3) Offshore Wind Farm. Please be advised that G-Tec, on behalf of Thistle Wind Partners (TWP), is undertaking a Geophysical Survey of the proposed Bowdun (E3) Offshore Wind Farm Array Area. The purpose of this Notice to Mariners (NtM) is to outline the working area for the survey vessel, as well as the scope of work. The survey will utilise the vessel Karina.


G-Tec will be undertaking a geophysical survey over Bowdun (E3) Area Area utilising towed sensors. During the survey the vessel will be operating at approximately 4 knots with equipment being towed at a distance of up to 300m astern of the vessel.

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Seawatch Wind Lidar Buoys - Caledonia Offshore Wind Farm



Deployment of two (2) Floating Seawatch Wind LiDAR buoys in the Moray Firth for the acquisition of Wind and Metocean Data for a period of 24 months.


*Reinstated after maintence on the 8th of May 2024*

On the 3rd of June 2023, Fugro deployed two (2) Floating Seawatch LiDAR buoys within the Caledonia Offshore Wind Farm site for the acquisition of Wind and Metocean Data. The two buoys are intended to remain in-situ for a minimum period of 24 months.

 

Mariners are advised to maintain a 500 m clearance from the deployed equipment.  Operations were completed by the Fishing vessel ‘MS Elisabeth’.

 

The buoys will remain in situ until June 2025, the exact removal date will depend on weather and be determined at a later stage. A separate NtM will be issued for the removal activity.

 

Details on the Seawatch Wind LiDAR (3.0) Buoys including navigational safety features and mooring layout design are provided in the attached NtM (V10).

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Loch Erisort Marine Survey - Laxay to Kershader



On the instruction of Scottish Hydro Electric Power Distribution [herein SHEPD], a survey campaign is required to provide detailed information on the seabed characteristics and current velocity of an area within Loch Erisort, Isle of Lewis to enable a route engineering feasibility study to be undertaken as part of a planned submarine cable installation project.


On the instruction of Scottish Hydro Electric Power Distribution [herein SHEPD], a survey campaign is required to provide detailed information on the seabed characteristics and current velocity of an area within Loch Erisort, Isle of Lewis to enable a route engineering feasibility study to be undertaken as part of a planned submarine cable installation project.

 

One of two MCA Category III vessels - Marine Sensor or Coastal Sensor II will be utilised on the project. The survey area is a 150m corridor, defined by the coordinates listed in the attached NtM.

 

Survey operations at these locations are expected to commence from w/c 27th May 2024, with an anticipated duration of 7 days.

 

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.

 

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LionLink Marine Survey -Next Geolsolutions- Geophysical Survey



The Detailed Marine and Geotechnical survey works are being undertaken by the vessels OSV Ievoli Cobalt, Ievoli Amber, Ievoli Grey, Shore Presence, Shore Possibility, are planned to commence operations in the survey area on or around 15 May 2024. A scouting Vessel Ardent will support the project. During the survey works the vessels will be running survey lines and all vessels are requested to remain 1 km clear as the vessel will be towing sensors in the water as part of standard operations.


Vessel

From

Expected Duration

Ievoli Amber

 

15/05/24

50 days

Ardent

16/05/24

-

Ievoli Cobalt

28/05/24

35 days

Ievoli Grey

26/07/24

50 days

Shore Presence

15/05/24

27 days

Shore Possibility

11/06/24

16 days

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Metocean Survey - Salamander Offshore Wind Farm



Both FLiDAR buoys (now with cameras installed) have been successfully redeployed; as laid positions provided in full NtM. It was not possible to fix the technical issue on metocean buoy AIS; vessel is scheduled to return today or tomorrow to attempt this repair. The old clump anchor from FLiDAR 2 is assumed to be on seabed and could present a snag hazard; as soon as a suitable vessel is available a recovery attempt will be made. Marine users are advised to maintain 500 m from the buoys.


Planned deployment within the Salamander Offshore Array Area consists of:

  • 2x Fugro Sea-watch LiDAR Buoys (SWLB079 and SWLB086)
  • 1x Fugro Wavescan Metocean Buoy (WS164) with a Nortek Signature 250 kHz Acoustic Doppler Current Profiler (ADCP) on the keel weight.

Illustrative figures showing the buoy dimensions and general mooring arrangement are provided in the attached NtM.

 

Once in the water the top of the tallest mast is around 4 meters above the sea level. The buoys' drifting radius is approximately 240 m from their deployment positions. 

 

The buoys are fitted with the following navigational safety features:

  • Buoys painted yellow in colour;
  • Yellow St Andrews Cross;
  • Passive radar reflector (Mobri S-4);
  • AIS AtoN (with MMSI numbers: 992351428, 992351430, 992351429); and
  • Marine lantern (with flash character Fl (5) Y 20s - 5 yellow flashes every 20 seconds) with a range of 4 nautical miles.
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Cable exposures - IFA2000 Interconnector



A cable route maintenance survey has detected a section of cable with intermittent exposures and potential free spans in the UK sector of the IFA 2000 Interconnector. These exposures are found across all four cables west of 001° 17.2’E . Fishing vessels are advised to keep clear of this area.


The exposures are present intermittently across all four cable routes as shown below/on the map.

 

Application for licence to remediate exposures has been submitted. Fishermen are requested to stay well clear.

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Sheringham Shoal Windfarm Export Cable Corridor (Temporary Hazard)



There is the potential that two separate lengths of export cable and ducting have become exposed on the seabed (export cable route from Sheringham Shoal Windfarm). Potentially this may create an unguarded snagging hazard of approximately 20m for each of the cables/locations identified. The hazard notice remains active until such time that a survey can be completed and the hazard investigated.


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Benthic Ecology Survey - Stromar Offshore Wind Farm



Mariners are advised Stromar Offshore Wind Farm are commencing an offshore benthic ecology drop-down camera and grab sample survey from the Curtis Marshall survey vessel. The survey is commencing no sooner than 13 May 2024 in the Moray Firth around 50 km offshore of Wick, Scotland. Survey completion is anticipated by 4 June 2024.


The survey vessel Curtis Marshall will attend to a number of sampling positions within the survey area presented. At each sampling position a drop-down video and sediment grab sample will be acquired before moving along to the next position.

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Construction Area Boundary Demarcation Buoy Installation - Dogger Bank C Offshore Windfarm



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.

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Environmental Study - PELAgIO Offshore Windfarm



Marine Scotland intend to undertake Offshore Wind Farm environmental surveys around the Seagreen Offshore Windfarm site, and wider Firth of Forth and Tay as part of the PELAgIO programme. PELAgIO is a three-year project, led by the University of Aberdeen and cofunded by the Natural Environment Research Council (NERC) and The Crown Estate (TCE), that will help improve understanding of how OWFs may influence marine productivity and, consequently, fish, bird, and marine mammal distributions.


As part of the survey activity three seabed frames shall be deployed within the Seagreen site boundary. The frames/moorings all have an acoustic release & recovery system. Mooring M4_WBAT has an associated groundline and thermistor chain, the attached polyester line contains mini CTD sensors. The surface mark shall display a yellow light, flashing 5 every 20s, range 4 nautical miles. The moorings shall be laid by the research vessel Scotia, which is expected on site on Thursday the 02nd of May to lay moorings. The mooring operation is expected to be completed within 24 hours. Mooring M3_WBAT shall be laid at a date later in May which will be confirmed in a revision to this notice.

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Benthic Survey Campaign - Dogger Bank C Offshore Wind Farm Array Area and Export Cable Corridor



The DSV Curtis Marshall, will perform drop down video and benthic grab sampling within Dogger Bank C Array and Export Cable Route construction areas


The works will be performed in a single campaign, commencing on the 31st of May 2024 and continuing until approximately 30th June 2023. The works will be continuous, 24 hours a day. 

 

During operations, the DSV Curtis Marshall 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 corridor.

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Export Cable Rock Placement - Dogger Bank C Export Cable Installation, Campaign 2



The rock placement vessel, Flintstone, will perform rock placement within section 2 of the Dogger Bank C export cable route (KP91 – KP177) in the Southern North Sea


Rock will be placed on the export cable at a third-party asset crossing location. In/out surveys will be performed prior to and following rock placement. 

The work will be performed in a single campaign with 1 planned load of rock, mobilising within the window 25 May 2024 until 15 June 2024.

 

During this time the vessel will be onsite for a duration of 7 days. Work will be performed within the Export Cable (EC) route and will be continuous, 24 hours a day. During rock placement operations, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. Flintstone will be restricted in its ability to maneuver as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. 

 

It is requested that all vessels maintain a minimum of 1.5Nm separation distance from Flintstone and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor. In the period prior to protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention. To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM). The guard vessels will contact vessels approaching within 1.5Nm

 

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Floating Marine Hazard - Dogger Bank A Offshore Wind Farm



Dogger Bank Offshore Windfarm is being developed in 3 phases – Dogger Bank A (DBA), Dogger Bank B (DBB) and Dogger Bank C (DBC), located off the North-east coast of England in the Southern North Sea.


Mariners are advised of potential floating debris in the vicinity of the Dogger Bank A offshore wind farm array area. Any sightings of floating debris should be reported to the Duty Marine Coordinator on the contact details below.

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Marine Hazard and Archaeological Exclusion Zone - Dogger Bank C Export Cable



A new marine hazard has been identified during UXO identification and investigation operations in the Dogger Bank C export cable corridor.


The marine hazard is located on the seabed in the near vicinity of the intended route of the DBC export cable and is a group of metallic objects associated with military (probably WW2) activity in nature.

 

A 50 metre Archaeological Exclusion Zone (AEZ) has been implemented under the terms of the Written Scheme of Investigation (WSI) produced and agreed with Historic England as per Licence condition in accordance with 16(g) of dML 1 and Condition 13(g) of dML 3.

 

Fishing vessels and other vessels engaged in the deploying of sub-surface and bottom interacting gear should avoid the area.

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Research Buoy Recovery Confirmation - Morlais Demonstration Zone.



Notification of the completed recovery of scientific research buoy from the Morlais Demonstration Zone to the Port of Holyhead.


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Horizontal Directional Drilling (HDD) works - Hornsea Project Three Offshore Wind Farm



Mariners are advised that Orsted Hornsea Project Three (UK) Limited (hereafter ‘Orsted’) will be commencing a scope of Horizontal Directional Drilling (HDD) works in Q2 2024. 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 Haven Seachallenger (jack-up barge (JUB)), the Siskin (tow vessel for the Haven Seachallenger) and the C-Odyssey (a multi cat support vessel) are expected to mobilise on 13th May 2024 from Tillbury, Essex. The works will last until approximately September 2024, not including 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

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Diving works on the Kincardine Field



Please be advised that a programme of air diving operations is planned to commence 7th May 2024 in the Kincardine windfarm. The programme is expected to last around 30 days and will visit every floater. At all times the vessel will be working alongside a turbine. There are no planned works outside the Consenting Area. All vessels are requested to provide the Seafast Don due clearances as required for vessels undertaking diving operations.


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Potentially exposed cable - Caithness Moray HVDC link



Scottish Hydro Electric Transmission Plc has become aware of two areas of potential cable exposure on the Caithness Moray HVDC link, and request that a 500m safety zone is observed


Scottish Hydro Electric Transmission Plc has become aware of two areas of potential cable exposure on the Caithness Moray HVDC link, and request that a 500m safety zone is observed centred on the co-ordinates below.

 

KP

Longitude (WGS 84)

Latitude (WGS 84)

99.240

-2.8633908494

58.4590588736

105.282

-2.9656976221

58.4615448756

 

Mariners are requested not to anchor or tow equipment inside the 500m safety zone surrounding the potentially exposed cable, as this would pose a risk of both snagging and / or damage to vessels, gear and the Caithness Moray HVDC link.

 

This email serves as notification under condition 35 of licence 04368/18/2

 

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Exposed Cable - Shefa-2 (Segment 8)



Shefa-2 Segment 8 cable damage has been repaired. There are sections of wet stored (surface laid) cable that are sensitive to any external impacts and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.


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PrePARED Fish Tracking Array - Beatrice and Moray East Offshore Windfarms



Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works. PrePARED is a collaborative research project coordinated by Marine Scotland Science which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms.


Marine Scotland Science (MSS) intend to install 87 acoustic fish tracking moorings in the Beatrice and Moray East Offshore Windfarms areas (BOWL (38 moorings) and Moray East (49 moorings)) as part of the PrePARED programme of works (figure 1 & 2). PrePARED is a collaborative research project coordinated by Marine Scotland Science which aims to concurrently study predator (seabird and marine mammal) and prey (fish) distribution and behaviour in and around offshore wind farms. The moorings hold research equipment that support hydrophone receivers. These receivers log the presence of fish, such as Cod, Haddock and Whiting which will be tagged with acoustic ID transmitter tag s (they will also record salmon and seatrout smolts migrating from Moray Firth Rivers tagged by the Atlantic Salmon Trust (AST) should they pass within range).

 

The proposed locations of the fish tracking moorings are shown (Figure 1); the positions of the moorings are given in WGS84 (Table 1). The moorings will be deployed from the 10th of April 2022 by a the Waterfall operated by Moray First Marine. The moorings will be removed by the 30th of August 2026.

 

Acoustic fish tracking moorings will not be surface marked and will be located on the seabed. The array moorings will extend vertically no more than 4 metres. The moorings will be serviced by boat, using the inbuilt acoustic recovery system. In the unlikely event of failure in the acoustic release system an ROV will be used from the same boat to service the mooring.   Please note the acoustic fish tracking moorings are being deployed as close to the wind turbine generators as possible to minimise interference with fishing operations (50m), should these be accidently caught only the instruments are required to be returned and the location of the discarded weight should be supplied to MSS for recovery later.

 

Fish capture traps and timed-release cages (8 traps and cages in total; Figures 3 and 4) will be deployed in Moray East and Beatrice sites. These traps and cages will be used in the capture and managed release of fish needed for internal electronic tagging with acoustic ID transmitter tags. Traps and cages will be present at Moray East and Beatrice for up to 10 days commencing 13th of April. Traps and cages will move at 1 to 2-day intervals. All traps and cages will be marked with creel style floats and clearly marked “Marine Scotland Science” and be marked with an AIS beacon (visible as MARLAB 1 – MARLAB 8). Traps and cages will be at least 100 metres from turbine locations. Locations of traps and cages will be notified to the relevant windfarm Marine Control Centre as appropriate

 

Contact details

 

All enquiries should be made to the Marine Scotland acoustics mailbox  acoustics@scotland.gsi.gov.uk) marked for the attention of Robert Main. Switch Board Tel: 0131 244 2500

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Floating LiDAR Buoys - Campion Wind



Mariners are advised that CampionWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy SWLB060 will remain mobilised until the 31st October 2024. Service activities on the buoy will be carried out at approximately three monthly intervals, depending on weather conditions.


Mariners are advised that CampionWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy SWLB060 will remain mobilised until the 31st October 2024. Service activities on the buoy will be carried out at approximately three monthly intervals, depending on weather conditions.

 

Servicing activities will comprise of the following steps: − Temporary retrieval of the FLiDAR Buoy SWLB060 for transport to Aberdeen for servicing; − Collection of FLiDAR Buoy SWLB060 in Aberdeen for onsite redeployment.

 

The FLiDAR Buoy will be monitored remotely so that in the event of a mooring failure, a team can be mobilised to carry out recovery and re-deployment activities. The Seawatch FLiDAR Buoy is yellow in colour and will exhibit a navigation light according to IALA standards: five (5) flashes at one (1) Hertz, every twenty (20) seconds (Fl (5) Y 20s). The ranges for the light on the Buoy is 5 nautical miles.

 

The FLiDAR Buoys location is outlined below and displayed within the Notice to Mariners (provided as an attachment to this notice). This location is within the CampionWind offshore wind farm array area, off the east coast of Scotland.

 

CampionWind will not seek to submit an updated AIS licence to support this extended mobilisation as the existing AIS Licence (1280449/3) is valid until September 2027.

 

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Verena Subsea Cable Survey - UK to Denmark



The survey will be conducted on behalf of McMahon Design & Management using survey vessel GLOMAR VANTAGE. This vessel is appropriately licensed and has the requisite certifications by the Danish and British Survey Offices and Lloyd’s classification. The works will include a 400-metre corridor geophysical survey along the Verena cable route. Work is expected to commence on 03/05/2024 and conclude by w/c 01/07/2024.


This notice provides an update on the upcoming Geophysical Survey in the North Sea.

The survey will be conducted on behalf of McMahon Design & Management using survey vessel GLOMAR VANTAGE. This vessel is appropriately licensed and has the requisite certifications by the Danish and British Survey Offices and Lloyd’s classification. The works will include a 400-metre corridor geophysical survey along the Verena cable route with start and end point locations listed in the table below. Tables 2 and 3 show the coordinates which will be followed by the survey vessel.

 

•    The geophysical survey scope will include MBES, SSS, MAG, and SBP.
•    Work is expected to commence on 03/05/2024 and conclude by w/c 01/07/2024. 
•    From Figure 1, and coordinates in Table 1, the survey will commence from the UK side of the cable corridor. 
•    Vessel GLOMAR VANTAGE will be on cite on 03/05/2024 for mobilisation and commence survey works immediately after. 

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Metocean and Floating LiDAR Campaign extension - MarramWind Offshore Wind Farm



MarramWind Offshore Wind Farm Metocean and Floating LiDAR (FLiDAR) Campaign will be carrying out service visits for FLiDAR Buoy WS198 approximately every three months, until demobilisation in October 2024.


Mariners are advised that MarramWind Limited (a 50/50 Joint Venture company between ScottishPower Renewables UK Limited and Shell New Energies Holding Limited) FLiDAR Buoy WS198 will remain mobilised until the 31st October 2024. Service activities on the buoy will be carried out at approximately three-monthly intervals, depending on weather conditions.

 

Servicing activities will comprise of the following steps:

− Temporary retrieval of the FLiDAR Buoys WS198 for transport to Aberdeen for servicing;

− Collection of FLiDAR Buoy WS198 in Aberdeen for onsite redeployment.

 

All locations referred to are outlined in a table and displayed in Figure 1 within the Notice to Mariners (provided as an attachment to this notice). These locations are all within the MarramWind offshore wind farm 75 km off the east coast of Scotland.

 

FLiDAR Buoy WS198 is yellow in colour and will exhibit a navigation light according to IALA standards: five (5) flashes at one (1) Hertz, every twenty (20) seconds (Fl (5) Y 20s). The ranges for the lights on the buoy is 5 nautical miles.

 

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

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Survey - Sound of Papa from mainland Shetland to Papa Stour



On the instruction of Scottish Hydro Electric Power Distribution [herein SHEPD], a survey campaign is required to provide detailed information on the seabed characteristics and current velocity of an area across the Sound of Papa from mainland Shetland to Papa Stour, to enable a route engineering feasibility study to be undertaken as part of a planned submarine cable installation project.


On the instruction of Scottish Hydro Electric Power Distribution [herein SHEPD], a survey campaign is required to provide detailed information on the seabed characteristics and current velocity of an area across the Sound of Papa from mainland Shetland to Papa Stour, to enable a route engineering feasibility study to be undertaken as part of a planned submarine cable installation project.

MCA Category II vessel - Proteus will be utilised on the project for the offshore element of the project.

 

The survey area is a 1,200m corridor across the Sound of Papa, defined by the coordinates listed in the attached NtM.

 

Survey operations at this location are expected to commence from w/c 8th April 2024, initial works completed over the period of 3 weeks.

 

VESSEL DETAILS

All vessels to be used during the survey campaign are owned and operated by Aspect Land & Hydrographic Surveys Ltd. Operations will be limited to daylight hours only.

 

The vessels conducting these surveys 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.

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Inter Array Cable Installation - Dogger Bank A Offshore Wind Farm



The Cable Lay Vessel (CLV) Viking Neptun will continue the Inter Array Cable laying operations in the Dogger Bank A OWF, with the fourth cable installation campaign. The offshore support DP2 vessels Go Supporter and will assist with cable installation and termination works.


The Go Supporter will carry out pull in preparation and continue installation and termination works until approximately 30th of June 2024. The Viking Neptun will commence cable lay works from the 15th of March 2024. The works will be continuous, 24 hours a day.

 

During operations, the Go Supporter and Viking Neptun will be restricted in their ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights.

 

The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 1.5Nm separation distance from the vessels and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working corridor.

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Export Cable Rock Placement - Dogger Bank C Export Cable Installation



The rock placement vessel, NORDNES, will perform rock placement within section 2 of the Dogger Bank C export cable route (KP91 – KP177) in the Southern North Sea. Rock will be placed as remedial work at various locations on the export cable as well as at various crossing locations. In/out surveys will be performed prior to and following rock placement at each position.


The work will be performed in a single campaign with 1 planned load of rock, mobilising on the 12th of May 2024 until the 31st of May 2024. During this time the vessel will be onsite for a duration of 7 days. Work will be performed within the Export Cable (EC) route and will be continuous, 24 hours a day. Rock placement will be performed at various locations within these working areas within the EC corridor.

 

During rock placement operations, the construction working corridor will remain closed for any static fishing, anchoring or use of other equipment with seabed intervention. NORDNES will be restricted in its ability to maneuver as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. 

 

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

 

In the period prior to protection by rock placement, the cable will be exposed on the seafloor. During this time the cable is sensitive to any external impact and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention. 

 

To protect the cable in the 500m working corridor, guard vessels will be deployed along the route (described in a separate NtM). The guard vessels will contact vessels approaching within 1.5Nm

 

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Export Cable Pre-Lay Survey - Dogger Bank C Export Cable



The vessel ARMADA 7802 will conduct a geophysical pre-lay survey along the Dogger Bank C Export Cable Corridor for section 1 (KP5 to KP95) and section 3 (KP170 to the Offshore Substation Platform (OSP)) in the Southern North Sea, between the 15th of May 2024 and the 31st of May 2024


The geophysical survey includes acquisition of high-resolution Remotely Operated Vehicle (ROV) mounted Multi Beam Echo Sounder (MBES) data and ROV visual inspections of crossings and targets of potential interest. No seabed intervention works to be performed.

 

The extent of the planned pre-lay survey is -/+15m either side of the route, however a wider working area (+/-450m either side of the route) is expected to account for turning radius, third party crossings etc. It is therefore requested that all vessels maintain a minimum 1000m separation distance from the survey vessel and pass at reduced speed.

 

During operations ARMADA 7802 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.

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Fish Monitoring Survey Receiver Deployment - Spiorad na Mara offshore windfarm - As-Laid Positions



Spiorad na Mara Ltd have successfully deployed a series of fish acoustic tagging receivers within the proposed Spiorad na Mara offshore windfarm array area by the vessel Walrus


Each receiver and mooring will not extend >3m from the seabed (See attached). All receiver units will all be of ‘acoustic release’ (Innovasea, AR) type with acoustic retrieval canister (ARC). There will therefore be no markers on the surface whilst the equipment is in situ. Markers will only be deployed when the equipment is to be retrieved and a work vessel is on site to retrieve the equipment.

 

Fishing within the array area is currently active throughout the site, alongside associated gear. However, it is politely requested that vessels avoid ativity around the deployed recievers.

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Offshore Geophysical Survey - Outer Dowsing Offshore Wind Farm



Outer Dowsing Offshore Wind (a joint venture between TotalEnergies, Corio Generation and Gulf Energy) shall be conducting a 2 month offshore geophysical survey between 27th May and 18th July 2024 using the vessel Glomar Supporter call sign: HOAL. The survey vessel shall at times be towing a cable up to approximately 100m behind the vessel (the end marked by a tail buoy) at depths of up to 3m below sea level. The survey vessel shall have limited maneuverability so please allow a safe distance.


Company:                                  Outer Dowsing Offshore Wind

Contractor:                                ROVCO Limited

Survey Vessel:                          Glomar Supporter

Survey Vessel call sign:          HOAL

Earliest Start date:                   27th May 2024

Latest Finish date:                   18th July 2024

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Transition Piece Offshore Installation - Moray Offshore Windfarm (West) Limited



This notice to mariners is to inform that Moray Offshore Windfarm (West) Limited (“Moray West”) will be commencing with the installation of Transition Pieces (TP) at the Moray West Offshore Wind Farm (Windfarm Marine License MS-00009774) from around 23 January 2024. The work comprises of the installation of 60x TPs on the already installed Monopiles. The TPs will be installed by the Jack up vessel Apollo.


The scope of TP installation with Apollo comprises of the installation of 60x WTG TPs and the scope of works for the MP installation with Orion comprises of the installation of approx. 30x MPs.

 

The TP installation will be carried out with the dynamically positioned installation Jack Up Vessel (JUV) Apollo. The MP installation will be carried out by the dynamically positioned installation vessel Orion in addition to the Bokalift 2.

 

 

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SHEPD Subsea Inspections - Orkney Islands



Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the Orkney Islands.


Please be advised that Aspect Land & Hydrographic Surveys Ltd (on behalf of SHEPD) will be undertaking subsea inspections of several cables across the Orkney Islands.

 

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

 

VESSEL DETAILS

The vessel [Offshore Sensor] to be used during the survey and inspection campaign is owned and operated by Aspect Land & Hydrographic Surveys Ltd. Operations will be limited to daylight hours only.

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

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

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Geotechnical Survey Export Cable - Seagreen Offshore Wind Farm



Geo Connector will conduct several deep and shallow seabed cone penetration tests as part of a ground investigation geotechnical survey. The survey locations are located within the proposed Seagreen Phase 1A export cable corridor and the Seagreen Offshore Wind Farm site boundary


On behalf of Seagreen Wind Energy Ltd, Geo will conduct several deep and shallow seabed cone penetration tests as part of a ground investigation geotechnical survey. The survey locations are located within the proposed Seagreen Phase 1A export cable corridor and the Seagreen Offshore Wind Farm site boundary.

 

The survey vessel, Geo Connector, is expected to commence operations within the export cable corridor on or around the 24th of April. Survey works are expected to be complete by the middle of May 24, vessel details below.

 

All vessels are requested to give Geo Connector at least 500m clearance whilst engaged in drilling activities.

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Geotechnical site investigation - Norfolk Vanguard West



Site investigation survey of the Norfolk Vanguard West windfarm. The Ocean Vantage and Kommandor Susan will be completing Geotechnical operations


The Ocean Vantage and Kommandor Susan survey vessels shall be conducting geotechnical survey operations on a 24-hour basis. Their work will consist of Geotechnical Survey ops within the boundaries of the offshore wind farm site.

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Geotechnical Survey - Berwick Bank Offshore Windfarm



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


Overview 

Mariners are advised that SSE Renewables will be returning to Berwick Bank Wind Farm area to continue Geotechnical survey work. The survey will be within the proposed Berwick Bank Wind Farm site boundary (see Figure 1). Respective co-ordinates are listed in Table 1.   

 

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

 

The survey work is being undertaken by Fugro and will be conducted from the vessel Sea Gull. The geotechnical survey is due to start on 02 May 2024. The scouting/guard vessel will be the Artemis. 

 

Survey Duration  

The survey is planned to mobilise on 02 May 2024 lasting approximately 4 months. The planned survey end date will be no later than 30 September 2024 weather conditions permitting. 

 

Survey Tasks  

The scope of work within the main array area will comprise downhole sampling and cone penetration tests in sand and clay then extended by rotary core drilling in rock to depths up to 50 m below seabed. 

 

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

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ROV SubSea Campaign - Galloper Wind Farm



ROV subsea foundation inspections internal and external across 42 locations at Galloper Wind Farm.


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Metocean Equipment Deployments - Ossian Offshore Wind Farm



Partrac is planning to redeploy the LiDAR Buoy at Site 3, from 21st April 2024. The works are estimated to be carried out on one day, weather permitting.


Partrac Ltd. deployed FLS200 Floating LiDAR buoys 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 redeploy the LiDAR Buoy at Site 3, from 21st April 2024. The works are estimated to be carried out on one day, weather permitting. The vessel to be used for the works is the Mar Fortune with call sign LEZI, MMSI Number 257011630 and IMO 9267273.

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Geophysical Survey - Celtic Sea Pre-Consent Surveys



Geophysical survey activities undertaken by Kommandor Iona and Fugro Searcher in the Celtic Sea Project Development Areas (PDAs)


Survey vessels, Kommandor Iona and Fugro Searcher, will undertake Geophysical and UXO survey operations in the Celtic Sea. Kommandor Iona will commence survey operations on or around 29th April 2024. Fugro Searcher will join Kommandor Iona on or around 15th May 2024. Completion of the UXO and Geophysical survey phase is estimated to be 30th July 2024, progress permitting.

 

Each survey vessel will have a dedicated Fisheries Liaison Officers (FLO) onboard, who, with the support of Fishing Industry Representatives (FIR) onshore will provide live updates on vessel progress and immediate areas of operation throughout the course of the survey programme.

 

UXO survey operations will be carried out across all three PDAs. Kommandor Iona will commence UXO survey operations from 29th April and will run individual transects at multiple locations across each PDA.

 

Fugro Searcher will commence Geophysical survey operations on or around 15th May 2024. Kommandor Iona will also commence Geophysical survey operations once the UXO survey scope is complete. To assist with communicating survey vessel plans and locations to mariners, the PDAs have been split into smaller sub blocks documented in the attached Notice to Mariners. The survey vessels will work in separate sub blocks. Line orientations in all PDAs have main lines running northwest/southeast and cross lines running northeast/southwest. The survey lines cover the full extents of the PDAs.

 

Mariners are advised that the Kommandor Iona and Fugro Searcher may be found turning beyond the limit of the PDA boundaries. Therefore, a nominal 5km turning area has been identified around each PDA in all directions. This area is designated to provide sufficient space for the vessel to turn and navigate safely whilst towing deployed survey equipment as well as performing marine mammal mitigation procedures prior to acquiring data within the PDA survey blocks.

 

When towing survey instruments, the survey vessels will be restricted in ability to manoeuvre. Vessels will display the lights and shapes appropriate to their survey activities.

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Asset Preservation Campaign - Dogger Bank A Offshore Wind Farm



The Service Operations Vessel, (SOV) Edda Boreas, will carry out Balance of Plant (BoP) and Asset Preservation operations within Dogger Bank A construction site. The works will be performed in a single campaign, commencing on the 6th of November 2022 and continuing until approximately Q2 2024. The works will be continuous, 24 hours a day.


The operations will include visual inspections and maintenance at installed WTG foundation locations. During operations, the Edda Boreas will be restricted in its ability to manoeuvre as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972) and will display the appropriate day shapes and lights. The vessel will also transmit an Automatic Identification System (AIS) message. It is requested that all vessels maintain a minimum of 500m separation distance from the Offshore Supply Vessel and pass at reduced speed. Fishing gear or other equipment with seabed intervention should not be deployed when approaching the working area.

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Dogger Bank A and B Boundary Buoy As-Installed Locations



The NLV Pharos has completed a limited construction boundary demarcation buoy removal and relocation operation on the Dogger Bank A and B boundary demarcation buoys in the Southern North Sea. The resultant boundary buoy deployment now marks both DBA and DBB as one large construction site.


The operation included the removal of 2 previously deployed Special Marks from DBA and 3 from DBB. The DBB SP10 Special Mark has been re-located. A total of 32 construction boundary demarcation buoys will remain in location until the windfarm construction activities have been completed and handed over to the Operations and Maintenance teams. Once the permanent Aids to Navigation (AtoN) have been installed on the WTGs, Trinity House will approve the permanent AtoN and the boundary buoys will be removed. If anyone finds a buoy that is off station or encounters a buoy location where it is not functioning or is missing, they should report this to the Dogger Bank Duty Marine Coordinator as soon as possible.

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Broadshore Wind Farm - Metocean buoy Investigation



Eolos has deployed two floating LiDAR Devices offshore Scotland for the acquisition of Wind and Metocean Data for a minimum period of 24 months.


Eolos has deployed two (2) Floating LiDAR Devices offshore Scotland for the acquisition of Wind and Metocean Data for a minimum period of 24 months.

 

The units deployed are:

  • FLS200 E25 (deployed 09 Apr 2023); and
  • FLS200 E26 (deployed 08 Apr 2023)

 

Metocean buoy

Illustrative figures showing the buoy dimensions and general arrangement are provided in the attached NtM. 

 

Once in the water the top of the tallest mast is around 4 meters above the sea level.

 

The buoy is fitted with the following navigational safety features:

  • Buoy painted yellow in colour;
  • Yellow St Andrews Cross;
  • Radar reflector;
  • AIS AtoN (with MMSI 992351405, corresponding to Broadshore FLIDAR E26); and
  • Marine lantern (with flash character Fl (5) Y 20s - 5 yellow flashes every 20 seconds) with a range of 5 nautical miles.

 

Mooring design

 

The buoy drifting radius is approximately 240 m from its deployment position. All material will be removed from the seabed after the measurement campaign is complete. The mooring layout design is provided on the final page of this document. The mooring layout design is provided as the final page of the attached NtM.

 

 

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Moray West Wind Farm - Array cable burial



Scope of work includes the jet trenching of array cables between the Wind Turbine Generator foundations and Offshore Substation foundations. Also an ROV survey of the array cable routes post burial will conducted.


Please be aware that, during the cable burial work and activities, by virtue of its mode of operation the North Sea Enabler will be Restricted in her Ability to Manoeuvre (RAM) and will also display the appropriate day shapes while conducting cable installaiton operations are taking place as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3).

 

Masters of approaching vessels are therefore requested to maintain their vessels and gears at a minimum safe passing distance from the vessel of 500 metres when it is undertaking work and

showing the appropriate shapes and lights in accordance with COLREGs Rule 27 to not compromise the safety of the ‘North Sea Enabler and their crew, and the ability to undertake its contracted

works.

 

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Foundation Installation Campaign - Dogger Bank B Offshore Wind Farm



The Offshore installation vessel, HLV Seaway Strashnov, will install mono-pile foundations in the Dogger Bank B offshore windfarm construction area


The works will commence on the 17th of April 2024, continuing until approximately Q3 2024. The works will be continuous 24 hours a day. A chart of the DBB construction area and the foundation locations are provided below. A running list of the next locations to be installed and mono-piled locations are presented in the Weekly Notice of Operations.

 

The installed monopiles will be marked with temporary lighting with the following characteristics:

 

•           Flashing (Fl) Yellow (Y) 2.5 seconds (s)

•           IALA Availability Category 2 (not less than 99.0%)

•           360° visibility – up to two lights per structure may be used to achieve this

•           At least 2 nm range.

 

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

 

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

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OSP Commissioning - Dogger Bank B Offshore Wind Farm



The Dogger Bank B Offshore Substation Platform (OSP) will undergo a Commissioning phase within the Dogger Bank B construction area


The Jack up Vessel (JUV) HEA Leviathan will jack up and connect to the DBB OSP by a fixed gangway. The HEA Leviathan will remain on site during the Commissioning phase, acting as the accommodation platform and OSP emergency evacuation vessel.

 

The works will commence on approximately the 19th of April 2024, continuing until approximately 17th August 2024. The works will be continuous 24 hours a day.

 

During operations, a Statutory Safety zone of 500m radius will be in place around the HEA Leviathan for the duration of the Commissioning phase of the DBB OSP. Vessels are requested to maintain a minimum safe passing distance of 1km from the HEA Leviathan during the operation.

 

The Platform Supply Vessel (PSV) SAR Loke will support the HEA Leviathan, carrying out regular supply runs to the offshore site.

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Wind Turbine Generator Installation Works – Moray Offshore Windfarm (West) Limited (Moray West)



Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out Wind Turbine Generator Installation Works across the whole of the Moray West site. The Wind Turbine Installation Vessel ‘Wind Orca’ is expected to arrive to site circa 6th April 2024. The work comprises of the installation of 60 x WTGs (Wind Turbine Generators) on the already installed Transition Pieces.


The ‘Wind Orca’ vessel is expected to arrive on site circa 6th April 2024 to complete offshore Wind Turbine Generator (WTG) installation onto the pre-installed monopile and transition pieces on site.  The overall duration is expected to be approximately 6-9 months. The Wind Orca will be supported by the SOV (Service Offshore Vessel) ‘Norwind Breeze’ and two CTV’s (Crew Transfer Vessels) Fob Swath 3 & Fob Swath5.

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Construction energy island - Princess Elisabeth Island in the Belgian part of the North Sea



Construction of the Princess Elisabeth Island. The exclusion zone around the construction site is marked by 4 cardinal buoys (ELI-N, ELI-E, ELI-S and ELI-W).


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

 

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

 

More information about the Princess Elisabeth Island is available on the Elia website: www.elia.be/projects. 

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Met Mast Special Mark light repair - Moray Offshore Windfarm (East)



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) will undergo repairs to reinstate the light at the special mark buoy around the remaining subsea structure at the meteorological mast (Met Mast) (See Figure 1 & Table 1) at the earliest opportunity. Due to weather and other restrictions, the works are still to be carried out and the Met Mast buoy is currently unlit. The next opportunity for Moray East to complete the repairs is now May 2024.


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) will undergo repairs to reinstate the light at the special mark buoy around the remaining subsea structure at the meteorological mast (Met Mast) (See Figure 1 & Table 1) at the earliest opportunity. Due to weather and other restrictions, the works are still to be carried out and the Met Mast buoy is currently unlit. The next opportunity for Moray East to complete the repairs is now May 2024. Another notification will be disseminated in due course once more precise dates and the vessel involved are confirmed.

 

Please be aware that while navigating the area to keep an extra look out for the unlit Met Mast Special marker buoy during the hours of darkness and reduced visibility, until such a time as the buoy is repaired. Please also note that the Met Mast is currently marked by a virtual AtoN.

 

Please be aware that, during the survey activities, by virtue of its mode of operation the vessel will be Restricted in her Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe passing distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule

 

27. In order to not compromise the safety of the Vessel, their crew, and their ability to undertake its contracted works, fishermen who have static fishing gears deployed within 500 m from the Met Mast location (see Table 1 and Figure 1) are requested to provide the coordinates of such deployed gears in DMS and details of whether the surface markers used are visible at all states of visibility to Alex Winrow-Griffin (Brown & May Marine) using the contact information below (Section 58 of the Merchant Shipping Act 1995). Fishermen who have static gears deployed beyond 12 nm are reminded that static gear must be marked in accordance with Commission Implementing Regulation (EU) No. 404/2011

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Geophysical and Geotechnical Surveys - Morecambe Offshore Wind Farm



Please be advised that a geotechnical and unexploded ordnance identification survey (geophysical) is due to be undertaken for the proposed Morecambe Offshore Wind Farm. The geophysical and geotechnical survey will be undertaken across the windfarm site, and a section of the export cable route, to provide an overview of ground conditions near surface and at depth across the site. The survey will start on 1st April 2024 at the earliest, for approximately 17 weeks depending on weather conditions


The scope of work involves a UXO survey at intrusive test sites to reduce the risk of encountering UXO during the geotechnical investigations.

 

The scope of works for the Generation Assets includes deep geotechnical investigations:

• 35 Piezocone Penetration Test (PCPT) and 18 collocated sampling Boreholes at the potential WTG locations up to 50-60m depth

 

Shallow geotechnical investigation will include the following:

• Up to 24 vibrocores and CPTs to 5m depth below the seabed along the potential inter-array cable (IAC) route.

• 11 vibrocores and CPTs to 5m depth below the seabed along the ECRC

 

Survey operations will be conducted by the following vessels:

• Ocean Observer – Offshore UXO and Shallow Geotechnical survey • Titan Discovery – Nearshore UXO survey

• Forth Warrior – Nearshore Shallow Geotechnical survey

• Ocean Vantage – Offshore Deep Geotechnical survey

• Horizon Geodiscovery – Offshore Deep Geotechnical survey Vessel details are provided in section 4.

 

The offshore vessels; Ocean Observer, Ocean Vantage and Horizon Geodiscovery will operate on a 24hr basis while the nearshore vessels Titan Discovery and Forth Warrior will operate on a 12hr basis. All vessels will display appropriate day shapes (mast head signals visually indicating the status of a vessel to other vessels on navigable waters during daylight hours) and lights at all times during operations.

 

Exact coordinates of survey locations can be provided via the Fisheries Liaison Officer. Please contact the Fisheries Liaison Officer if you feel the survey affects you and you have not been previously contacted.

 

An Offshore Fisheries Liaison Officer will be onboard the Ocean Observer for the UXO and shallow geotechnical element, and the Horizon Geodiscovery or the Ocean Vantage for the deep geotechnical element to provide advice to the survey contractors and facilitate liaison with the fishing industry.

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Geotechnical Survey Campaign - Caledonia Offshore Wind Farm



Horizon Geobay conducting a Geotechnical survey within the Caledonia OWF area - boreholes, CPTs, P-S Logging


Scope Overview: The purpose of the Detail Design investigation is to collect data at the Caledonia Offshore Wind Farm (OWF) location and to identify local stratigraphy and geological units. The aim of the surveys is to acquire high quality data to inform the Company of the seabed and underlying ground and environmental conditions and in particular to identify the presence or otherwise of any geohazards and risks to the project.

 

2024 Campaign:

3 x  CPT/oversampling boreholes with PQ3 Coring from Bedrock locations

4 x  CPT Sampling boreholes

1 x  Seismic CPT including PS Logging

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Hornsea Three - Notification of Geophysical Survey Commencement



Mariners are advised that Orsted Hornsea Project Three (UK) Limited will be commencing a scope of geophysical survey works in Q2 2023. The surveys are being undertaken for the purposes of geophysical investigations for the Hornsea Project Three Offshore Wind Farm project, located within the UK Sector of the North Sea.


Proposed survey activity:

Two survey vessels will be used for the survey, the Geo Ocean IV and the Geo Ocean VI. The work will start with mobilisation in Eemshaven, Netherlands on the 3rd of April 2024 and survey works will begin shortly after. The works will last approximately until the end of September 2024, allowing for mobilisation, survey operations, de-mobilisation, and weather contingency. Note that the vessel will have limited manoeuvrability and it is requested that all vessels operating near the survey vessels maintain a safe distance (at least 500m) and pass at minimum speed.

 

Safety:

It is requested that anybody having knowledge of any potential objects submerged or moored on the seabed within the survey area that could be damaged or form a hazard to the survey vessel and its equipment advises Hornsea Three’s Onshore Fisheries Liaison of their position and nature. Hornsea Three has requested the clearance of any static fishing gear within the survey boundary shown in Figure 1 and described in Section 7 of this Notice. When surveys commence, a listening watch will be maintained on VHF Channel 12 and 16 when the survey vessel is within the appropriate port authority area and will actively transmit an AIS signal.

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Dropped Object - BB17 - Burbo Bank Offshore Wind Farm



There has been a dropped object from turbine BB17 at the Burbo Bank Offshore Wind Farm. Mariners are requested to maintain a distance of 500m from the turbine at all times and until further notice.


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Subsea Cable Bell Mouth and Concrete Mattresses - Kilbrannan Sound



Mariners should be aware of the presence of subsea structures to the north of Port Crannaich where the Carradale to Arran subsea power cable enters a directionally drilled duct by means of a bell mouth.


As part of the works to install a new subsea power cable in Kilbrannan Sound between Carradale and Arran a subsea bell mouth structure was required. Three concrete mattresses were also installed immediately to the west of the bell mouth. Details are provided on the attached notice to mariners.

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Export Cable Guard Vessel Deployment - Dogger Bank C Export Cable Route



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.

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UXO Identification Works - East Anglia 3 Offshore Wind Farm & Export Cable Route



UXO Identification using the vessel 'Glomar Wave' will take place at the East Anglia 3 (EA3) OWF & ECR. Work will begin inside the OWF site on approx 17 March 2024. The vessel will mobilise and initially transit from Gt Yarmouth to the site and will pause enroute to perform some trials and calibrations. A work class ROV and onboard survey and positioning equipment will be used. In the event any UXO's are located, the vessel will mobilise with a demolition spread at a date TBD (likely May/Jun)


The whole scope is expected to complete approx. August 2024.

 

More details to follow. 

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Array Cable Installation - Moray Offshore Windfarm (West) Limited



This notice to mariners is to inform that Moray Offshore Windfarm (West) Limited (Moray West) will be carrying out array cable installation and ROV survey operations from the vessel Seaway Aimery supported by the Olympic Orion at the Moray West Offshore Wind Farm site.


Scope of work includes installation of subsea power cables into the Wind Turbine Generator foundations and Offshore Substation foundations. Followed by lay subsea power cables on the seabed (a separate NtM will be issued for cable burial operations in the future) Also an ROV survey of the array cable routes, and monitoring of the operation will be conducted.

The work will be performed by the Seaway Aimery supported by the Olympic Orion.

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Offshore Site Investigation - Awel y Môr Proposed Wind Farm



A Geotechnical Site Investigation of the proposed Awel y Môr Offshore Wind Farm is due to be conducted off the North Wales coast between 11th November 2023 and May 2024.


The jack-up barge Seafox 7 is due to start geotechnical site investigations on the 11th November 2023 and to continue the survey until May 2024.  This estimate includes delays likely to be caused by bad weather. During the survey, Seafox 7 will drill 60 boreholes at discrete locations in the project site.  The vessel will operate for 24 hours per day during the survey.  The survey area is illustrated in the Notice to Mariners and bounded by the coordinates below:-

  • NE Marker: 53° 29.460’N 003° 35.220’W
  • SE Marker: 53° 29.532’N 003° 44.760’W
  • SW Marker: 53° 26.700’N  003° 51.600’W
  • NW Marker: 53° 29.280’N 003° 51.600’W

Seafox 7 will be supported by the vessels Elisa and Fairplay 32 in its daily operations, and these vessels will tow the barge between sampling locations.  The tugs will standby at anchor on the project site, and will also be transiting between the site and nearby ports. The vessel MCS Boreas will be assisting the Seafox 7 with crew transfer operations to shore on a twice-weekly basis.

 

Vessel details

Seafox 7 is a jack-up barge with a red hull and white superstructure.  It measures 55.5m long with a beam of 32.2m.  Details for this barge and its support vessels are provided below:-

  • Seafox 7: drilling vessel | MMSI 235065812 | Call sign 2BGC6
  • Elisa: Support vessel / tug | MMSI 236745000 | Call sign PBZP
  • Fairplay 32: Support vessel / tug | MMSI 210447000 | Call sign 5BAM6
  • MCS Boreas: Crew Transfer Vessel | MMSI 235096501 | Call sign 2GDR8

Operations will be conducted on a 24 hour basis.  A continuous listening watch will be conducted on VHF Channel 16.

 

Other vessels are requested to keep their distance, maintaining at least a 500m distance.

 

Full details of all of the vessels can be found in the Notice to Mariners.

 

About the proposed windfarm

The Awel y Môr Offshore Wind Farm would be built around six miles off the North Wales coast, to the west of the existing Gwynt y Môr windfarm.  Awel y Môr would be connected to the National Grid by an export cable coming ashore between Rhyl and Prestatyn.  The proposed windfarm would include up to 50 wind turbines.  It could generate enough power for up to half a million homes, and it will be the largest renewable energy investment in Wales in this decade. Full project details and maps of the windfarm location are available at the project website awelymor.cymru.

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Exposed Cable - Shefa-2 (Segment 7)



Shefa-2 Segment 7 cable break has been repaired and the Post Repair Inspection and Burial (PRIB) operation has been completed. Hence, minor sections of wet stored cable is sensitive to any external impacts and constitutes a snagging risk for anchoring, fishing gear or other equipment with seabed intervention.


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Exposed Cable - Shefa-2 (Segment 7)



Shefa-2 Segment 7 cable breaks occurred 14 October 2022 and 11 May 2023. The Post Repair Inspection revealed that, due to rocky seabed, cable burial is not possible and other cable protection measures are being evaluated. Hence, a section of 2600m cable is exposed to seabed and poses a high risk to fishing activity. Please pay attention to this section of wet stored cable which is sensitive to any external impacts and constitutes a snagging risk for fishing, anchoring or other seabed equipment.


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Exposed and Free Span - Greater Gabbard Offshore Wind Farm



Results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.


Please find attached a chart showing the results of the Greater Gabbard OFTO export cable survey. The chart lists the changes to the exposures on the three export cables, on the inshore section between KP 3 and KP 5 with a free span remaining around KP 4. Between KP 36 and KP 38 there are some exposed sections as the cables enter the site. In addition, although listed as exposures on the chart, there are areas of shallow burial at KP10 and a cable exposure on the interconnector cable within the site.

 

The exposed/shallow burial areas are shown as the coloured dots on the cable route highlighted in a black box.  Equitix (Greater Gabbard OFTO) have asked that all Fishermen operate with caution when fishing anywhere on the cable route and particularly the areas that are shallow buried around KP10.’

 

Coordinates of exposed/shallow burial areas are shown on the attached chart.

 

The OFTO is updating its risk assessments to determine the extent of remedial measures that may be required. Equitix intend to provide an update on remediation after the risk assessment exercise is complete.’

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Project Marine Survey Geotechnical Operations - Eastern Green Link 3



Mariners are advised that a marine geotechnical survey is planned for the Eastern Green Link 3 (EGL3) project. The marine survey activities for EGL 3 are planned to commence late-November 2023 and are expected to complete around the end of May 2024.


Eastern Green Link 3 is a HVDC electricity transmission interconnector between Scotland and England, a joint venture between National Grid and Scottish & Southern Electricity Transmission (SSEN).

 

The EGL 3 project will play a vital role in achieving the UK and Scottish governments net zero targets and significantly increase the UK’s capacity for clean, green renewable power.

 

The EGL 3 marine geotechnical survey works consist of shallow cone penetration tests (CPTs) and vibrocores (VCs) to a maximum of 6 m below seabed at approximate 1 km intervals.

 

The area of work, pertaining to this Notice to Mariners (NtM) for EGL 3, is illustrated in Figure 1, with the survey vessel contact details for the project found in Table 1. Note, centreline co-ordinates are provided on the associated Kingfisher notice.

 

Contact details for the project Fisheries Liaison Officers are detailed below.

 

The geotechnical survey works are being carried out by Next Geosolutions using the following vessel:

 

Ievoli Grey (IMO 9608788; MMSI 247325100; Call Sign IBCM).

 

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

 

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

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Metocean Buoy Deployments - Ossian Offshore Wind Farm



Partrac Ltd. deployed FLS200 Floating LiDAR buoys at two sites within the Ossian Floating Offshore Wind Farm off the East coast of Scotland in August 2022. Partrac is planning to redeploy the LiDAR Buoy at Site 1, and recover the LiDAR Buoy at Site 3 to Montrose for maintenance, from 14/02/2024. The works are estimated to be carried out over two days, weather permitting. The vessel to be used for the works is the Voe Earl with call sign 2FEP6, MMSI Number 235090599 and IMO 9639983.


FLOATING LIDAR BUOY 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.

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Navigational Hazard due to cable exposure - AEC-1



AEC-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.


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Rampion Offshore Wind Farm Notice To Mariners: Risk of cable exposure within the Rampion Wind Farm



Following the most recent subsea survey carried out in August 2023, updated information of inter-array cable exposures are listed and illustrated below. Analysis of survey data at the wind farm indicates the locations of exposures of sections of inter-array cables are subject to change resulting from dynamic movements of the seabed but are primarily focused within the South-South East of the wind farm area.


Following the most recent subsea survey carried out in August 2023, updated information of inter-array cable exposures are listed and illustrated below. Analysis of survey data at the wind farm indicates the locations of exposures of sections of inter-array cables are subject to change resulting from dynamic movements of the seabed but are primarily focused within the South-South East of the wind farm area.

 

Mariners are reminded that further safety information related to array cable exposures can be found in “The Risks of Fishing Near Cables and Renewable Energy Structures”, published on the KIS-ORCA website https://kis-orca.org/safety/the-risks-of-fishing-near-cables-renewable-energy-structures/. General safety information can be found here: https://www.seafish.org/article/kingfisher-bulletins.. All mariners are requested to make themselves aware of their obligations for conducting activities over buried and protected cables under International and UK Cable (Subsea) Protection Legislation.

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Risk of cable exposure within the Galloper Offshore Windfarm



Galloper 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.

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Metocean Equipment - Spiorad na Mara



Spiorad na Mara Ltd deployed an array of metocean equipment, including one floating LiDAR (FLIDAR) buoy, over a period of 24 months, and two Datawell Waverider buoys and one Seabed mooring for 12 months within the Spiorad na Mara offshore wind farm site. An additional seabed mooring has been deployed on site. The original seabed mooring remains without a surface buoy attached. there is approximately 100m of rope attached. Please keep clear.


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WTG Installation Campaign - Dogger Bank A



The 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. 

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