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The Seagull Field is located on UK licence P1622 Block 22/29C. 17km south of the Eastern Trough area Project (ETAP) Central Production Facility (CPF). Neptune will develop the Seagull reservoir as a subsea tie‐back to existing seabed infrastructure over the BP operated ETAP CPF. The development is high pressure and high temperature and Neptune is the Operator for the subsea development. Neptune will also drill and complete the Seagull Wells and shall retain overall Project responsibility.

The Seagull development will require installation of new subsea equipment as follows: Four Xmas Trees; a 4 slot manifold; a 17km control umbilical (including hydraulic, electrical and chemical supplies) direct from ETAP to Seagull; a 5km 10” production pipeline; a 5km 3.5” wash water pipeline from Seagull to the existing Egret manifold; and a Wye manifold adjacent to the existing Egret manifold, through which the new Seagull production pipeline will connect with the Heron cluster pipeline system connected back to the ETAP CPF. From ETAP CPF Seagull oil and gas will be exported to shore through the GAEL and FPS pipeline systems to the Kinneil Terminal onshore.

We already have an ODA established covering the Seagull drill centre and the Egret manifold and would like to request to extend the ODA to incorporate the entire Seagull works area. The extended Offshore development area will be required commencing from September 2021 ‐ March 2023.

Please be advised that Briggs Marine Contractors will be undertaking Drop Down Video (DDV) and sediment grab sampling on an area 6 - 11 km offshore to the North West of Islay as well as following a route from Islay to Hunterston, passing to the south of Islay, Kintyre and Arran.

The work will utilise the 19m coastal survey vessel Mersey Guardian for the operations.  Operations will commence from 2nd August, with the exact location of daily sampling being dependent on weather conditions. It is expected that operations will last for approximately 6 weeks, again, dependent on weather delays.

The Mersey Guardian will operate on the offshore site and corridor route to Hunterston.  During operations the vessel will be restricted in its ability to manoeuvre and will display appropriate shapes and lights when on survey work. Equipment may be submerged ROV up to 150m from vessel.

Survey work undertaken on the Mersey Guardian will be restricted to daylight hours and the vessel will return to port overnight.

Should any vessel wish to come within 500m of the survey vessel then direct communication with the Master is required.

The vessel will display the appropriate lights / shapes for their operations.  

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The target has a 500 metre exclusion zone in place with immediate effect.

The on site vessel "Glomar Worker" will transmit a securite broadcast at 6 hourly intervals giving full details of the hazard to all vessel in the area.

The Jack up Barge, will depart from Inde 23A on 18th August 2021 and transit to the Amethyst field, where it will  commence HCF/Topsides dismantlement operations around 22nd August 2021 and will continue on the Amethyst B1D location until 4th December 2021.

General Maintenance

Please be advised that the AIS on the Inch Cape Offshore Met Mast is currently non-operational. The marine navigation lights,  foghorn, aviation lights and remain operational. This fault will be investigated and notification provided once the AIS is operational again. 

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The North Falls Offshore Wind Farm site is located to the east of Felixstowe and bordering the Greater Gabbard and Galloper existing wind farms

Fugro Mercator - Offshore Geophysical Investigation

The geophysical operations at the North Falls site are expected to be carried out from the Fugro Mercator call Sign: C6DU5 from 10th May 2021 for approximately 8-9 weeks. Fugro Mercator will be conducting operations across the Main Array and Export Cable Route areas >10m LAT.

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

A continuous listening watch will be conducted on VHF Channel 16.

Survey operations will be conducted on a 24-hour basis  

Curtis Marshall - Environmental Investigation

The environmental operations at the North Falls site are expected to be carried out from the Curtis Marshall call sign: 2HWN3 from 1st July 2021 for approximately 7 days. Curtis Marshall will be conducting operations across the Main Array and Export Cable Route areas both offshore and nearshore.

Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

As the Curtis Marshall will be deploying equipment astern of the vessel, the vessel will require large turning circles and will be restricted in her ability to manoeuvre. All vessels operating within this area are requested to keep their distance, maintaining at least the 1,000m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

A continuous listening watch will be conducted on VHF Channel 16.

Survey operations will be conducted on a 24-hour basis  

Fugro Seeker - Nearshore Geophyscial Investigation

The geophysical operations on the North Falls export cable route from the 10m LAT contour inshore to the potential landfall, are expected to be carried out from the survey vessel Fugro Seeker call sign: 2HCS2 from 15th May 2021 for approximately 10 weeks.

Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

As the Fugro Seeker will be towing survey equipment the vessel will require large turning circles and will be restricted in her ability to manoeuvre. All vessels operating within this area are requested to keep their distance, maintaining at least the 500m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

A continuous listening watch will be conducted on VHF Channel 16.

Survey operations will be conducted on a 12-hour basis.

Mariners are advised that the following vessel has commenced survey operations at the Triton Knoll Offshore Wind Farm export cable route, as outlined below:

Precision 1 – Crew Transfer Vessel

Operating from Port of Hull

Operating within the Triton Knoll Windfarm Export Cable Route. The vessel will be towing survey equipment therefore it is requested that all vessels operating within this area maintain at least 500m distance from the vessel and pass at minimum speed to reduce vessel wash. Call Sign “2FCD2” MMSI “235089165”

Mariners are advised that the following vessels continue to be active at the Triton Knoll Offshore Wind Farm as outlined within previously issued NtM's:

Demarcation Buoys

Partrac Ltd have deployed x12 Demarcation Buoys and x2 Metocean Buoy at the Triton Knoll Offshore Wind Farm (TKOWF) to mark the perimeter of the TKOWF site boundaries.

Vessels are requested to leave a wide berth during the installation operations. The buoys will be deployed for a period of two years, and all equipment will be removed at the end of the installation.

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

Local Notice to Mariners Recently

NtM 001-2021 (05th January 2021)

NtM 002-2021 (20th January 2021)

NtM 003-2021 (17th March 2021)

NtM 004-2021 (24th March 2021)

NtM 005-2021 (06th April 2021)

NtM 006-2021 (16th April 2021)

NtM 007-2021 (18th May 2021)

NtM 008-2021 (29th June 2021)

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.

Navigation Warning - 25th May 2021

Mariners are advised that during a Man Overboard Recovery drill a “Dead Fred Casualty” was subsequently lost, presumed sunk to the seabed in the following position;

Latitude - 53° 30.27’N

Longitude - 000°40.55’E

Water Depth – 79m LAT

If the object is recovered, please contact the following in the following order.

• Triton Knoll Marine Coordination Centre:
• Email – tkmcc@smchse.com
• Tel – 0045 82 13 62 19

• Lee Cornwell - External Consultant – Marine Operations
• Email - l.cornwell@tritonknoll.co.uk
• M: +44 (0)7384 807293

Please be advised that from the 27th July 2021, Ocean Ecology will be undertaking seabed camera, grab sampling and Baited Remote Underwater Video (BRUV) surveys within the SOWF array area, along the SOWF export cable route and several reference locations, for approximately one month.  The exact start and finish dates will be dependent on the prevailing weather conditions and work progress.

Environmental surveys with a subsea camera system, grab sampler and BRUV housing and frame will be undertaken aboard the 26.0m survey vessel, ‘DSV Curtis Marshall’ (full vessel details below).

The survey vessel 'Curtis Marshall' will be listening on Ch 16 and Ch 14 at all times. All vessels are requested to remain at a safe distance of 500 metres and pass at a slow speed as the vessel will be restricted in her ability to manoeuvre whilst equipment is deployed.

The following table details coordinates for the SOWF survey boundary.

The vessel will be undertaking dive operations in the vicinity of the Blythe platform, Elgood subsea well, and Thames pipeline.  The vessel will perform various installation, tie-in, mattress laying and metrology activities.

All activities will be performed by the dynamically positioned Dive Support Vessel Seven Atlantic

Call-sign: 2CBP2, MMSI: 235 071 342

LOA: 145 metres, Breadth: 26 metres

The vessel will be using twin diving bells to deploy the divers and the crane to manoeuvre subsea equipment.  The vessel will also be using a remotely operated vehicle (ROV) in the water.  

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

See detailed map on our bulletin website

The survey vessel Northern Ocean will undertake a geotechnical survey involving seabed Cone Penetration Tests and Vibro Core sampling within the proposed Seagreen Offshore Wind Farm Phase 1A export cable route and the Seagreen array site boundary. The survey vessel is expected to arrive at the site on or around the 1st of August 2021 with the works expected to completed in 33 days.

The vessel will initially undertake Excavation, Pipeline Cutting and Mattress Installation activities at the 24’ Manifold location. The vessel will undertake mattress laying at both the Blythe platform and Elgood Well locations.  In addition, the vessel will conduct a seabed survey along the Elgood to Blythe umbilical route.

All activities will be performed by the dynamically positioned (DP) vessel Dina Star

To assist in survey calibration checks the survey vessel Glomar worker will place two pieces of calibration equipment on the seabed. One steel surrogate target item, dimensions 1000mm x 250mm x 500mm and one USBL beacon will be deployed. The equipment was deployed 13th July 2021 at 1800 and will removed from the seabed on or around the 01st August 2021.

For background information about Moray East, please visit: www.morayoffshore.com/moray-east

Safety Zones

Please be advised that the Scottish Ministers have authorised the use of the safety zones during construction and operation of the Moray East Offshore Wind Farm as detailed below.

During construction

• A 500 metre radius around each WTG and OSP where construction works are taking place that include sensitive activities being undertaken by vessels RAM. A maximum of three of such zones is permitted at any one time. 
• A 50 metre radius around partially completed WTGs and OSPs where work is not underway and the risk assessments identify a need. 
• A 50 metre radius around each completed WTG and OSP prior to commissioning and as required by a risk assessment process. 

During major maintenance

• A 500 metre radius around all major maintenance works being undertaken around the WTGs and OSPs. No more than one major maintenance zone is permitted at any one time.

Construction Activities

It is currently anticipated that weather permitting offshore construction works will be carried out on a continuous basis (i.e. 24 hour working, seven days a week) unless notified otherwise.

Please be aware that by virtue of its mode of operation and the equipment deployed, construction vessels listed in the table below may be Restricted in their Ability to Manoeuvre 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 distance from these vessels of 500 metres when they are undertaking it work and showing the appropriate shapes and lights.  Further Notice to Mariners will be issued as construction progresses.

Please be advised that PLSE (pre-lay shore end) works will commence on 19 July 2021 at the Lowestoft cable end - works will continue on this segment through 1 August 2021. General cable installation works for the rest of the route will continue throughout July and August, with main lay commencing in the UK EEZ around the 6 August 2021, with final splice at Lowestoft targeted for the 16 August 2021, and finishing main lay operations around the 19 August 2021.

• The PLSE works described above will be undertaken by the vessel Nora B - Name: Nora B, Call Sign: PDKG, MMSI: 244170504, IMO: 9851270
• Further offshore cable installation works will be undertaken by the vessel Havila Phoenix: Name: Havila Phoenix, Call Sign: LAMQ8, MMSI: 257721000, IMO: 9407990
• The Guard Vessel Aurelia, will accompany the inshore PLSE works on the Lowestoft side, arriving onsite once PLSE are well underway (as early as 21st July): Name: Aurelia, Call Sign: MMSL, MMSI: 234903000

Perenco UK Limited plan to undertake decommissioning activities in the Southern North Sea as part of the Inde 18A  field Topsides decommissioning programme all work to be completed within the Inde 18A AD platform 500m zone. Work is required to move a bolder away from the AD installation to allow for future positioning of a Jack-up barge next to the AD installation later this year to complete the decommissioning work.

The scope of work is anticipated to commence on 28th July 2021 at the earliest. The latest completion date for the work is 3rd August 2021. Reach Subsea construction vessel Olympic Delta will carry out the work, the duration of which is expected to last for around 5 days.

Further updates will be provided once the start of the activity has been confirmed.

Reach Subsea Garpeskjaerveien 2, 5527 Haugesund, Norway

Survey Vessel – Olympic Delta (IMO  9745768) Call Sign – JWOH3

DSV (Seven Falcon) – Arran North Precommissioning & Commissioning Support (Subsea 7) Arran Field Development – Infield  03/08/21 – Depart Field 23/08/21

• Umbilical Tie-Ins & ANTIS valve ops
• Umilical leak test support
• 6” spool install and mattress protection
• Tree Spool Leak Testing
• Close cocoons and install skirts, mattressing
• Dewatering PLR removal & blind flange leak test
• Commissioning support
• Columbus Tie-Ins and commissioning support

Perenco UK Limited plan to undertake pipeline cuts and install abandonment plugs in the Southern North Sea as part of the Galahad  field decommissioning programme all work to be completed within the Galahad NUI 500m zone.

The scope of work is anticipated to commence on 28th July 2021 at the earliest. The latest completion date for the work is 3rd August 2021.

Reach Subsea construction vessel Olympic Delta will carry out the work, the duration of which is expected to last for around 5 days.

Further updates will be provided once the start of the activity has been confirmed

Survey Vessel – Olympic Delta (IMO  9745768)

Call Sign – JWOH3

Reach Subsea

Garpeskjaerveien 2,

5527 Haugesund, Norway

Dredging within Marine Aggregate Licence Area 457 is restricted to two active zones and a third call off zone. In order for dredging to occur within the third call off zone, at least 6 weeks notice is required prior to dredging can commence.

In order for effective implementation and notification, this notice provides sufficient time prior to dredging is scheduled to commence. Dredging is sheduled to commence on the 18/09/2021 for a period of 10 weeks. 

Please be advised that the remaining post-lay burial (PLIB) works of the Havhingsten fibre optic telecommunication cable system have now been completed in the Irish Sea, but there are three areas of surface-laid cable which are pending rock placement works.

There is a maximum of 25m of cable surface laid with Uradact protection either side of the crossings listed below. Rock protection works will be carried out during the second half of 2021. It is advised that extra care is taken when vessels are operating near the areas and that no vessel should trawl within 0.25 nautical miles from the listed coordinates prior to rock placement. The rock berms will be over trawlable and in-line with industry standards.

For further information please contact the Fisheries Liaison Officer (FLO) / Fishing Industry Representative (FIR) numbers:

IoM Onshore FLO

Guy Sutton:                        rgsutton@outlook.com – 07624428332

FIR

Tom Watson:                     tomwatsonfleetwood@btinternet.com – 07903 173624

FLO (MarineSpace)

Bethan Owens:                 bethan.owens@marinespace.co.uk – 07833 557808

Claire Griffiths:                  claire.griffiths@marinespace.co.uk – 07498 550 586

See detailed map on our bulletin website

Using vessel Guard Celena call sign : V7OY7. The survey vessel shall be towing a cable up to approximately 150m 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: Enviros Survey & Consultancy Limited

Survey vessel : Guard Celena

Survey vessel call sign: V7OY7

Earliest start date: 10th August 2021 Latest finish date: 29th December 2021

It should be noted that the survey vessel shall be initially accompanied by a fishing vessel: Sorrento GY189 providing visual reconnaissance for any sea surface obstacles. Company : Outer Dowsing Offshore Wind

Contractor : NFFO Services Limited

Support vessel : Sorrento GY189

Support vessel call sign : 2XLE

Cable lay and burial works of the HVDC installation are planned to take place from: • Cable lay 10th May –23rd June 2021 • Cable Burial 12th May – 30th August 2021

The route length of the main HVDC interconnection (2x bundles power cables + 1x Fibre Optic Cable) is in the order of 620km. The work covered by this NtM is covering the first campaign of 51km in length starting from the UK the landfall at Boygrift.

The Cable Lay works are being carried out by: Prysmian PowerLink using Cable Enterprise Call Sign 2FOV9. Supported by a tug Norne Call Sign PCJR.

The Cable burial works are being carried out by: Asso.subsea using Atalanti Call Sign 5BYY2 using the trenching tool AssoTrencher V and the Argo Call Sign 5BDF3 using the jetting tool AssoJet III and trenching tool AssoTrencher IV.

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.

Deployed Guard Vessels will monitor the exposed areas of cable while burial progresses and advise of safe distances locally.

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

Works overview Following completion of the landfall the Cable Laying vessel Cable Enterprise will surface lay the cable on the seabed along the HVDC cable route.

In periods while the cable is exposed on the seabed guard vessels will be stationed to monitor the cable and provide advice to mariners.

Cable Burial will follow soon after the cable lay operations carried out by two vessels Atalanti and Argo. Where cable burial is not possible (due to service crossings and / or where seabed conditions are unfavourable), guard vessels will remain on site.

Service crossing As part of the first campaign the Viking Link HVDC cable crosses 11 existing service. While awaiting the post lay protection operation, Guard vessels will remain in place to monitor the exposed cable.

See detailed map on our bulletin website

The works will be carried out by two construction vessels, the cable repair vessel and the cable de-burial/burial vessel.

Vessels carrying out the subsea cable 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) from the construction vessels during marine operations. Construction vessels will monitor VHF Channel 16 at all times. Mobile contacts for the vessels are listed at the end of this NtM. Removal of fishing gear from the Marine Working Area  is requested during the construction works in order to prevent damage to any fishing gear and to the construction equipment.  

A Potential Unexploded Ordnance (pUXO) identification survey will take place within the Seagreen Offshore Wind Farm site boundary. The survey vessel, Glomar Worker will utilise an ROV mounted magnetometer and video camera to conduct the survey of numerous targets to identify any possible UXO risk. Wind Turbine Generator positions, Inter Array Cable routes and 1 Offshore Sub-station location within the Seagreen site boundary will be surveyed.

The vessel will arrive at site on or around Sunday the 23rd of May. Survey works are expected to be concluded by August however this period may be extended due to weather conditions.

The USVs will be mobilised from Hartlepool Marina where each will transit under escort to the survey area. Survey operations will be continuous, 24 hours a day, A support vessel will escort the USV throughout the operations from the harbour entrance and will then continue transiting towards the survey site until the area is safe & clear of hazards. Although the vessel is uncrewed, it is managed throughout the 24hour operation piloted remotely using 360 degree cameras and other navigational aids. Passing vessels are requested to maintain a minimum 500m safety distance from USV during operations, reducing speed to minimise wake disturbance.

During the 2021 summer season the Lincolnshire Offshore Gas Gathering System (LOGGS) platform complex shall be removed. The LOGGS complex consists of five bridge linked platforms, as depicted below and is surrounded by a statutory 500m safety exclusion zone.

Saipem Ltd shall utilise the Heavy Lift Vessel Saipem 7000 call sign: C6NO5, supported by the Offshore construction vessel North Sea Giant call sign: LAYR7to remove the structures and a spread of tugs and barges to transport to the disposal yard located at ABLE UK, Teesside.

Infield operations shall remain ongoing for a period of ~60 days, commencing in field from ~20th June 2021.

Landfall Preparation and Cable Installation 

The export cable installation activities in the intertidal area are ongoing at the landfall at Horseshoe Point, Lincolnshire and will continue until approximately 30th September 2021. Works will be continual and intermittent throughout these periods.

It should be noted that export cable seabed preparation and installation seaward of mean low water springs is ongoing until end of 2021.

Vessels:

On behalf of Volker Dredging Ltd (VDL), this notice is to advise that an additional active dredge zone (Zone 2) is being activated on Area 461 to supply a beach recharge campaign in the region. The works will take place in August using the vessel the Spauwer and the zone will be deactivated again as soon as the project is complete.

The current dredging zone (Zone 3) will also remain active during this period.

Ithaca Oil and Gas Limited is planning to drill an exploration well into the Fotla reservoir to validate the geophysical interpretation of reservoir properties from seismic analysis.  Depending on initial findings, an appraisal programme will be carried out via up to two well sidetracks, with a third contingency sidetrack.  Fotla is located in Block 22/1b in the central North Sea, approximately 176km from the Scottish mainland (Peterhead), 46km from the UK/Norway median line in water depths of ca. 130m.

The rig will be onstation for aproximately 90 days.

See detailed map on our bulletin website

The DSV Boka Polaris (Call Sign: MYKR6) will be carrying out Inspection, Repair & Maintenance activities at the various locations

Start date = 29th July 2021

Duration expected to be approx. 14-21 Days to 19th August 2021

It is anticipated that operations will commence on or after 21st July 2021 and take approximately 1-2 weeks to complete (weather dependant).

As required by the Fisheries Code of Practice, Masters of vessels will call up on VHF Channel 16 when approaching the dredging area at a range of 10 nm (approximately 1 hour before operations are to commence) and will provide an estimated time of arrival on the area and position of operation. A VHF working channel will be established between the survey vessel and fishing vessel(s) if required. The survey shall be carried out by the Titan Endeavor: the vessel has a yellow hull with yellow superstructures: call sign is 2ELT9 and vessel contact number is +44 7884 068450. 

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

The Nordnes (Call Sign: PH0G) will be carrying out Rock Dumping activities BETWEEN the various locations

Start date = 15th July 2021

Duration expected to be approx. 8 Days to 22nd July 2021

See detailed map on our bulletin website

Activity: Operations of a remotely piloted Uncrewed Surface Vessel (USV) are planned off the North Wales Coast

Dates: Monday 26th of July for up to 7 days until 2nd August 2021, subject to weather conditions

The USV will be mobilised from Rhyl Harbour, Denbighshire, where it will transit to/from the area of operation. During the operation the USV will be performing a Hydrographic Survey of the export routes. 

A support RIB “Maverick” will escort the USV throughout the operations from the harbour entrance and will then continue transiting towards the survey site until the area is safe & clear of hazards.

It is requested that other vessels remain clear, so far as is practicable, during transit & survey operations.

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

Alcatel Submarine Networks UK Ltd. (ASN) has been contracted to carry out construction activities of the AMITIÉ cable system (starting 2km from shore). The AMITIÉ cable system spans nearly 6,600 km in total with the initial UK landing point in Widemouth Bay, near Bude, Cornwall. The construction activities will commence 2km from shore (>15m water depth) and will utilise the cable lay vessel “Ile de Brehat” call sign: FOUC, which will commence construction operations from the nearshore area out to the UK exclusive economic zone (EEZ)). The third-party vessel ESVAGT DON WM Offshore, call sign: OUNO2 will complete the PLGR in the UK EEZ only starting on approximately 23rd July lasting approximately 2 weeks. Following this the Ile de Brehat will start by performing a pre-lay grapnel run (PLGR) in UK Territorial Seas prior to laying the cable beyond the UK continental shelf staring approximately on 8th August 2021, lasting approximately 8 weeks. The exact start and finish date will be dependent on the prevailing weather conditions and work progress. It is requested that all vessels operating within this area keep their distance, maintaining at least a 500 m exclusion zone, and pass at minimum speed to reduce vessel wash.  

The cable lay vessel, Ile de Brehat call sign: FOUC will be operating from approximately 2km from shore out to the UK EEZ laying and burying the Amitié cable, including pre-lay grapnel run (PLGR) in UK Territorial Seas. The vessel ESVAGT DON call sign: OUNO2 (WM Offshore) is also contracted to complete the PLGR works in the UK EEZ only. These operations will be conducted on an ongoing 24 hour basis. A listening watch will be maintained on VHF Channel 16, and the vessels will actively transmit an AIS signal. Please see contact details for the Ile de Brehat & ESVAGT DON 

Please be advised that the Bay Towage - operated MV Torch multi-purpose vessel, mobilising from the Port of Barrow and working on behalf of Spirit Energy, is scheduled, subject to suitable weather, to commence a programme of cardinal buoy system installation around both the remaining DP3, and the remaining DP4, platform jacket structures from 9th July 2021. The structures are located in the east Irish Sea.

4 no. buoys, one each at the N, S, E, and W points of the compass, will be installed around each jacket structure. Each buoy will be positioned at an approximate 400m radius from the structure. A maximum 80m swing radius is designed into each buoy’s mooring system to ensure that it stays within the 500m safety zone of each structure.

The vessel will require to make 2 mobilisations per cardinal buoy system installation. The work programme will therefore take several days, and may need to be extended to allow for weather delays.

The remaining jacket structures, following removal of their topside earlier this year, extend to ca. 16.5 m (DP3) and 17.0 m above LAT (DP4) respectively. The structures remain attached to the seabed.

Company ShearwaterGeo sevices Ltd

Oceanic Vega; LCHQ3: is accomponied by 3 support vessels. Ocean Fortune, GV Andrea and Kristenborg.

Oceanic Vega is towing10 Seismic cables 5Nm in length.1600mtrs width Depth 8mtrs.

If anyone or knows of anyone who has static gear in this area, please contact;

Ian.green924@gmail.com. +44(0)7938516355

The operations are expected to be carried out in two periods, the first one from 29 May to 14th July 2021 and the second from July 26th until August 15th

However, please note the start date and the duration of the activity is weather dependant.

CS Responder will have stern deployed equipment and cable, and will be restricted in manoeuvrability. All vessels operating within this area are requested to keep their distance, maintaining at least the 500m safety zone around the vessel, and pass at minimum speed to reduce vessel wash.

Throughout operations, the vessel will be displaying the appropriate lights and shapes as required under the COLREGS Rule 27(b).

Fugro Mercator - Offshore Geophysical Survey

The geophysical operations at the Five Estuaries site are expected to be carried out from the Fugro Mercator from 5 th August 2021 for approximately 14 weeks.

Fugro Mercator will be conducting operations across the Main Array and Export Cable Route areas >10m LAT. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

As the Fugro Mercator will be towing survey equipment the vessel will require large turning circles and will be restricted in her ability to manoeuvre. All vessels operating within this area are requested to keep their distance, maintaining at least the 500m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

A continuous listening watch will be conducted on VHF Channel 16.

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

Curtis Marshall - Environmental Survey

The environmental operations at the Five Estuaries site are expected to be carried out from the Curtis Marshall from 2 nd November 2021 for approximately 2 weeks. Curtis Marshall will be conducting operations across the Main Array and Export Cable Route areas both offshore and nearshore. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress. 

As the Curtis Marshall will be deploying equipment astern of the vessel, the vessel will require large turning circles and will be restricted in her ability to manoeuvre. All vessels operating within this area are requested to keep their distance, maintaining at least the 500m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

A continuous listening watch will be conducted on VHF Channel 16.

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

Fugro Seeker - Nearshore Geophysical Investigation

The geophysical operations on the Five Estuaries export cable route from the 10m LAT contour inshore to the potential landfall, are expected to be carried out from the survey vessel Fugro Seeker from 1 st August 2021 for approximately 6-7 weeks. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

As the Fugro Seeker will be towing survey equipment the vessel will require large turning circles and will be restricted in her ability to manoeuvre. All vessels operating within this area are requested to keep their distance, maintaining at least the 500m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash.

A continuous listening watch will be conducted on VHF Channel 16.

Survey operations will be conducted on a 12-hour basis.

The Jack up Barge Haeva, will depart from Galahad (UKCS 48/12BA) at 53°32.75'N 01°21.55'E on the 16th August 2021 and transit to the Indefatigable Hub to the Bessemer Installation on 19th August 2021, where the planned Plug and Abandonment (P&A) will commence.

The P&A activity will take approximately 60 days and the Haeva is due to leave Bessemer on the 18th October 2021.

The Haven Seariser 4 will remain on site 24 hrs during operations, unless threatened by extreme weather. The MTS Valour will be anchored in the field during the nearshore activities. She will remain on station/site during the night and manned 24 hours throughout. The MTS Valour will provide assistance during diving operations and any barge movements required. Diving operations will be carried out from the Haven Seariser 4. The diving activities will include exposing the HDD exit points and to prepare the HDD’s ready for the submarine power cables. Diving operations might be carried out in the hours of darkness. A short safety message will be broadcast on CH16 advising of diving operations starting and ceasing. The RHIB Celtic Mara will be carrying out Multi-Beam Echo Sounder (MBES) surveys of the seabed and along the pre-cut trenches throughout the dredging activities. The survey gear will be positioned on a side mounted pole and extended into the water. Celtic Mara will make several passes over the area at a reduced speed. she will transit daily from Bridlington Harbour to the Haven Seariser 4 During barge movements/towing, it is requested that all vessels give the MTS Valour a 500m safety clearance zone.

During survey operations the Celtic Mara will be restricted in her ability to manoeuvre. It is requested that all vessels give the Celtic Mara a 500m safety clearance zone and reduce speed when passing. She will display the appropriate lights and day shapes. During dredging and diving operations it is requested that The Haven Seariser 4 be given a 500m safety clearance zone. Diving flag ‘Alpha’ and the appropriate lights will be displayed during diving operations.

See detailed map on our bulletin website

A-2-Sea Solutions Ltd will be operating the vessel ‘Cerys Line’ on a 24-hr basis. The ‘Cerys Line’ (26.1m LOA) will be underway throughout operations, sailing survey lines at 5-12 knots.

A-2-Sea Solutions will also be operating the vessel ‘Morven’ on a 24-hr basis to survey inshore of the 10m contours. The ‘Morven’ (20.0m LOA) will be underway throughout operations sailing survey lines at 4-8 knots. 

Both vessels will not be towing any equipment and only hull mounted mutlibeam echosounder will be used.

Both ‘Cerys Line’ and ‘Morven’ will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channel 16.

A-2-Sea Solutions Ltd will be operating the vessel ‘Morven’, call sign MBFQ6, on a 24-hr basis. The ‘Morven’ (20m LOA) will be underway throughout operations, sailing survey lines at 5-7 knots.

The vessel will not be towing any equipment and only hull mounted multibeam echosounder will be used.

Morven will exhibit the lights and shapes prescribed by the International Regulations for Preventing Collisions at Sea and will maintain a listening watch on VHF Channels 11 (Channel Navigation Information Service), 16 and 12.

The survey will commence in early August for a duration of approximately 14 days (weather depending).

Subsea Wells Operations - 48/30-14 Subsea Well :   Preparation for Well Plugging & Abandonment 

Platform PL83 Pipeline Operations

- PL83 Pipleine Mattress & Spool Removal (35-50mts) from Jacket Base out to circa 50mts in preperation of Rig arrival.

All Saturation Diving and ROV works inside 500mtr zone of each asset safety zone. 

Vessel will transit within Hewett Field from location to location during the course of the saturation diving works.

Please be advised that Global Marine are conducting the installation of the proposed NO-UK Telecommunications cable in UK TW and EEZ. Please note that there will be numerous vessels associated with the project. These are summarised below:

• Pre installation rock placement (UK EEZ) COMPLETE

The Nordes vessel (specification attached) has now completed its pre installation rock placement at the 2 pipeline crossings.

• Cable installation (UK TW - EEZ)  20th July – 18th August 2021

The Normand Clipper (specification attached) will be installing the proposed NOUK cable from the landing point at Seaton Sluice and laying the cable towards Norway.

1. Post Lay Inspection Burial (PLIB) (UK TW - EEZ) 24th August – 12th September 2021

The PLIB vessel (to be confirmed) will be conducting PLIB activity along the proposed cable route.

• Post installation rock placement vessel (UK EEZ) 1st – 9th September 2021

The Nordes vessel will then be conducting post installation rock placement at the 2 pipeline crossings described in Section 2 above.

The vessels will be limited in manoeuvrability. Other vessels should maintain a distance of at least 1NM from the cable ship during operations.  Please contact myself or Paul Deslandes, Project Manager (in copy)  if you have any queries regarding this notification or if you have any information on any underwater activity in this area that is relevant to the proposed operation.

Seven Pegasus DSV (Subsea 7) Tie-ins, Leak Test and De-watering - Penguins Redevelopment Project - Infield 11/06/21 – Depart Field 17/08/21

• Gas Export Tie-Ins, Leak Test and De-watering 
• Complete D7 Tie-ins
• Brownfield Bundle Tie-ins (DC2)
• DC2 Bundle Tie-Ins
• Brownfield Bundle Tie-ins (DC3 midline)
• UT Checks (Brownfield)

DEME Rockdump Vessel – Rockdumping - Penguins Redevelopment Project - Infield 15/07/21 – Depart Field 18/07/21

• Partial DC2 Bundle Rockdump
• Tybalt Flowbase Rockdump

An unmanned survey operation to collect hull mounted bathymetry data using 3 vessels. The vessels are all fully controlled 24 hours a day using satellite communications. During periods of bad weather XOcean will use Hartlepool or Grimsby to transit to for shelter. The area of operation will cover the project area at Endurance and two proposed pipeline route corridors.

Onshore HDD operations are taking place for three pipe ducts to be installed with trajectories that will emerge at the seabed around 400m offshore within the area identified as ‘Mooring Area’ in the attached chart. Vessels are required to maintain a safe distance from this area until the estimated completion date of 20th September 2021.

• Within the boundaries of the mooring area, a steel duct will be pushed out from each of the three Horizontal Directional Drilling (HDD) exit points andwill extend up to 10 m into the water column at an angle of approximately 9º to the horizontal as shown in the diagram.These duct projections are expected to occur from 10th July 2021 to around 21st August 2021. The first duct will beinstalled before the mooring area is marked.
• The RONA is conducting a high-resolution survey of the exit point of the HDD and then proceeding with pre-search activity for spotting and recording static fishing gear found along and outside the route corridor. The Survey will involve the use of Multibeam Echosounder (MBES) and Sidescan Sonar (SSS). The survey is being undertaken between 10th and 14th July. Further survey work of this nature may take place before the estimated completion date.
• The mooring area will be marked on around 26th July 2021 when the mooring and anchoring system will be installed for the dive vessel ISLE OF JURA to come onto station. The mooring and anchoring system, shown in the figure below, will be set up during the duration of the works to support the divers.
• The dive vessel ISLE OF JURA will remain on station during the immediate work period and will return to harbour in between works at the exit point. The current programme has 3 separate 4-5 day work phases for the vessel, with a few weeks in between. This means there could be times when the mooring system is left in situ without the vessel attached. In this instance all anchors will be clearly surface marked with marker buoys over the moorings. The size of the buoys is approx. 1.2m diameter and 1m high.
• The buoys will not be illuminated and will not have a radar reflector. The Isle of Jura will display the Alpha flag during daylight and Red/White/Red lights during the hours of darkness.
• The moorings and anchoring will only be of a temporary nature. The protruding ducts will be cut close to the seabed prior to the moorings being removed by the estimated completion date of 20 September 2021.
• Once the installation works are completed, the mooring and anchors will be fully recovered.

All vessels are required to comply with the COLREGS, especially rules 16 and 18.

The Tolmount minimum facilities platform has been installed on behalf of the Tolmount Development Project (comprising Premier Oil UK Limited, ODE Asset Management Limited and Humber Gathering System Limited (HGSL)) in UKCS Block 42/28d and an ERRV remains on location in field. 

The Valaris123 Jackup Drilling Rig is in position over the Tolmount platform, with drilling operations underway.  Drilling activity is planned for approximately 12 months (subject to further Kingfisher bulletins).  The Valaris 123  suspended NE well on 13th July 2021 and skidded to the SW well on 14th July 2021 to re-enter the SW well and will drill to completion.

Please note that an Offshore Development Area has also been requested for the Tolmount Development Project work.

See detailed map on our bulletin website

The target has a 500m exclusion zone in place with immediate effect.

The on site vessel the Glomar Worker will transmit a securite broadcast at 6 hour intervals giving full details of the hazard to all Vessels in the area.

See detailed map on our bulletin website

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence walk to work operations work scope at all 3 OPS’s within the bounds of Moray East Offshore Windfarm circa 19th May 2021 using Island Crown for approximately 40 days. Technicians will transfer via walk to work on all 3 OPS’s for commissioning and painting works.

During a CPT push at location EA1N-21-IAC-024-TCPT, the rods encountered a hard layer at 3.2m below the surface.

As communication was lost instantly at 3.1m when the rods started to be retracted, it is assumed the breakage occurred at that point and therefore the equipment was left at the 3.1m of the push. If this was the case then the top of the lost rods would be 1.15m above the seabed (in the worst case scenario).

Further investigation is planned to determine more accurately whether lost rods are above seabed level. The vessel will perform a side scan sonar survey and make use of a subsea camera at the location

The survey vessel, Geo Ranger has now left the project. A replacement vessel, Kommador Iona will utilise towed array equipment with side scan sonar, sub bottom profiler and magnetometer to conduct the survey of the remaining Wind Turbine Generator positions within the Seagreen site boundary.The survey vessel is expected to arrive at site on or around Wednesday the 14th of July. Seagreen Notice to Mariners 03-21 revision 4 refers.

See detailed map on our bulletin website

In preparation for the jacket foundation installation, three piles for each wind turbine location and offshore substation  platform will be installed. The piles will be installed by the Saipem 3000 (S3000) (call sign: C6SW6) into pre-drilled  sockets. Pile installation support will be provided by the Skandi Acergy (call sign: LAFD7) offshore construction vessel, which will arrive to site in late June 2021. The Skandi Acergy will transfer supporting materials and installation equipment between positions on the seabed adjacent to each foundation location. On arrival at each location, the S3000 will collect and utilise this wet-stored equipment during pile installation.  Once the three piles have been positioned within the pre-drilled sockets, grout will be inserted to secure them in place.

A supply vessel will be utilised to transport piles to NnG wind farm, as required.  Further information on the vessel for each visit will be provided on the Vessel Report and Weekly Notice to Mariners available at https://nngoffshorewind.com/resources/.

Area of Operations

Mariners are advised that the S3000 will be mobilised from Rotterdam (NL) to work within the NnG Wind Farm Area.

All vessels are requested to remain at least 500 metres away from all work vessels and the static fishing gear remains as shown in the below table.

WIND FARM AREA

EXCLUSION TO STATIC GEAR

Schedule

The pile installation work is due to begin week commencing 14th June, at the earliest. It is anticipated that the works will be completed by mid-December 2021, weather dependent. 

Weather permitting, construction works will be carried out on a continuous basis, 24-hours per day, seven days a week. 

For updates on the progress of the works, information will be provided in the Weekly Notice of Operations available on the NnG project website: https://nngoffshorewind.com/resources/.

Vessels Associated with the Activity

Please be aware that by virtue of its mode of operation and the equipment deployed, the S3000 and Skandi Acergy will at times be Restricted in their Ability to Manoeuvre 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 distance from these vessels of 500 metres when they are undertaking it work and showing the appropriate shapes and lights.

One guard vessel is currently within the wind farm site supporting NnG Offshore Wind Farm construction. The guard vessels will be one of the below, which can be contacted as follows, if required:

Port of Operation

The S3000 will mobilise from Rotterdam, NL. The Skandi Acergy will mobilise from Blyth, UK.

Adverse weather conditions

Upon adverse weather conditions, if the S3000 and Skandi Acergy are not able to hold on position, they will both seek shelter or return to a Port within the Firth of Forth.

General Safety Advice

Construction activities are ongoing within the boundaries of the Neart na Gaoithe Offshore Wind Farm.  Mariners are advised to refer to the NnG Weekly Notice of Operations where up to date information regarding activities on site is broadcast. A copy of this notice and the Weekly Notice of Operations can also be found at https://nngoffshorewind.com/resources/

Marine Coordination 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.

Fisheries Liaison

Fisheries liaison associated with the activity will be co-ordinated by Natural Power. For any commercial fishery queries please contact the NnG company Fisheries Liaison Officer (CFLO) Peter Berney, telephone: +44 (0)7391 402387 or email: NnG.FLO@naturalpower.com.  An Offshore Fisheries Liaison Officer (OFLO) will be present on the Sar Fame and can be contacted via VHF Channel 16.

Distribution List

A central list of recipients is maintained by the company Fisheries Liaison Officer; if you are not the appropriate recipient of these notices, or do not wish to receive the notices in the future, please contact us at NnG.FLO@naturalpower.com. A copy of this notice can also be found at https://nngoffshorewind.com/.   

The survey aims to obtain information on:

1. Distribution, size composition and abundance of all fish species caught.
2. Age – length distribution of selected species.
3. Distribution of fish in relation to their environment.
4. Distribution of macrobenthos and anthropogenic debris.
5. Surface and bottom temperature and salinity data using ESM2 profiler/mini-CTD logger and Niskin Bottle.
6. Length weight & maturity information using individual fish measurements, in support of the EU Data Regulation.

The survey aims to obtain information on:

1. Distribution, size composition and abundance of all fish species caught.
2. Age – length distribution of selected species.
3. Distribution of fish in relation to their environment.
4. Distribution of macrobenthos and anthropogenic debris.
5. Surface and bottom temperature and salinity data using ESM2 profiler/mini-CTD logger and Niskin Bottle.
6. Length weight & maturity information using individual fish measurements, in support of the EU Data Regulation.

The survey aims to obtain information on:

1. Distribution, size composition and abundance of all fish species caught.
2. Age – length distribution of selected species.
3. Distribution of fish in relation to their environment.
4. Distribution of macrobenthos and anthropogenic debris.
5. Surface and bottom temperature and salinity data using ESM2 profiler/mini-CTD logger and Niskin Bottle.
6. Length weight & maturity information using individual fish measurements, in support of the EU Data Regulation.

The survey aims to obtain information on:

1. Distribution, size composition and abundance of all fish species caught.
2. Age – length distribution of selected species.
3. Distribution of fish in relation to their environment.
4. Distribution of macrobenthos and anthropogenic debris.
5. Surface and bottom temperature and salinity data using ESM2 profiler/mini-CTD logger and Niskin Bottle.
6. Length weight & maturity information using individual fish measurements, in support of the EU Data Regulation.

Mariners are advised that Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) are due to replace the current boulder clearance vessel Sartor. The Sartor will be replaced by the Sar Fame (C6UL5) week commencing 28th June 2021, at the earliest. The Sar Fame (C6UL5) will undertake the remaining seabed preparation works within the Wind Farm Area.

The Sar Fame (C6UL5), will carry out the remaining boulder relocation operations in preparation for installation of the inter array cables in the Wind Farm Area. The Sar Fame will be undertaking boulder relocation using a Subsea Multi-Tool Remotely Operated Vehicle with a grab.

Relocation of boulders in areas of inter array cable infrastructure is a critical pre-construction activity to reduce significant Health and Safety risks to the construction phase. Boulders will be relocated a short distance from their existing position only. Boulder relocation activities will take place within the Wind Farm Area in Figure 1.

Area of Operations

Mariners are advised that the Sar Fame will be mobilised to work within the Neart na Gaoithe (NnG) Wind Farm Area. The Wind Farm Area coordinates are provided in the table below. The remaining works are expected to last approximately four months, weather dependent.

Vessels are requested to remain at least 500 metres away from the work vessel.

Schedule

The boulder relocation works commenced on the 2nd April 2021. The remaining boulder clearance works are expected to last approximately 4 months, until 30th September 2021, weather dependent.  It is currently anticipated that, weather permitting, construction works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week) unless notified otherwise.

For updates on the progress of the works, information will be provided in the Weekly Notice of Operations available on the NnG project website here https://nngoffshorewind.com/resources/.

Vessels Associated with the Activity

Please be aware that by virtue of its mode of operation and the equipment deployed, the Sar Fame will at times be Restricted in its Ability to Manoeuvre 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 distance from the Sar Fame of 500 metres when it is undertaking its work and showing the appropriate shapes and lights.

Port of Operation

The Sar Fame will mobilise from Montrose, UK.  The vessel will undertake crew changes from Leith and Dundee, UK.

Adverse weather conditions

Upon adverse weather conditions, if the Sar Fame is not able to hold on position, she will seek shelter within the Firth of Forth or return to Port.

General Safety Advice

Construction activities are ongoing within the boundaries of the Neart na Gaoithe Offshore Wind Farm.  Mariners are advised to refer to the NnG Weekly Notice of Operations where up to date information regarding activities on site is broadcast. A copy of this notice and the Weekly Notice of Operations can also be found at https://nngoffshorewind.com/resources/.

Marine Coordination 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.

Fisheries Liaison

Fisheries liaison associated with the activity will be co-ordinated by Natural Power. For any commercial fishery queries please contact the NnG company Fisheries Liaison Officer (CFLO) Peter Berney, telephone: +44 (0)7391 402387 or email: NnG.FLO@naturalpower.com.  An Offshore Fisheries Liaison Officer (OFLO) will be present on the Sar Fame and can be contacted via VHF Channel 16.

Distribution List

A central list of recipients is maintained by the company Fisheries Liaison Officer; if you are not the appropriate recipient of these notices, or do not wish to receive the notices in the future, please contact us at NnG.FLO@naturalpower.com. A copy of this notice can also be found at https://nngoffshorewind.com/.   

NnGOWL is developing the NnG Offshore Wind Farm, jointly owned by EDF Renewables and ESB, which is located in the outer Firth of Forth, Scotland. The NnG wind farm area is 15 km east off Fife Ness and 29 km from the East Lothian coastline and covers an area of 105 km2

The wind farm consists of 54 no. wind turbines (WTGs) and 2 no. Offshore Substation Platforms (OSPs), with a total capacity of approximately 45 0MW. Water depths across the offshore wind farm area generally range from 40 to 60 m below LAT. The generated power will be transmitted to the grid via two subsea export cable circuits which will reach landfall at Thorntonloch Beach, East Lothian, Scotland. Specific details and location of activities within the Wind Farm Area and Export Cable Corridor will be provided via subsequent notices as work progresses.

Buoyage

Five special markers are now in position:

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

A steel chain will be connected to each marker buoy, and the chain will be present through the water column, connected to an anchor placed on the seabed.

The survey involves the use of 2DUHR (sparker) equipment, Sub-bottom Profiler (SBP), Sidescan Sonar (SSS) and Magnetometer equipment, some of which will be towed approximately 150 m astern of the vessel, during July and August. Drop-down camera and grab samples will be collected at approximately 90 locations during this period and into August/September and Cone Penetration Tests (CPTs) will be undertaken at up to approximately 40 locations during September.

The survey will cover the main offshore array areas, plus 3km buffer, with initial 2km line spacing (later infilled to potentially 250m spacing at some locations). The survey vessels will start in the northern polygon initially to acquire a coarse grid of data across the site, before returning to infill where required. Sparker tests will be run to begin with in discrete areas.

All vessels are requested to maintain a safe distance (1nm) from the survey vessel Ocean Resolution at all times. Vessels will display appropriate shapes and lights when surveying.

Outline Programme of works

An Offshore Fisheries Liaison Officer (OFLO) will be present aboard the survey vessel – see details below. Any at sea, operational issues should be directed towards the OFLO in the first instance.

The survey will be conducted using the Noordhoek Pathfinder and will involve the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub-Bottom profiler (SBP), Remotely Operated Vehicle (ROV), and Magnetometer equipment, some of which will be towed sub-surface astern of the vessel. The Survey is being undertaken to enable the refinement of the cable route and the optimisation of trenching.

The extent of the planned survey is -/+100m either side of the route centreline detailed in this notice.

When using towed equipment, the total run-in length for Noordhoek Pathfinder is a minimum of 1200 m with a minimum turn radius of 320 m. As such, the vessel may at times be required to operate outwith the 200m wide survey area to facilitate survey line changes.

All vessels are required to comply with the COLREGS, especially rules 16 and 18 as the survey vessel will be restricted in her

ability to manoeuvre.

Please be advised that the 27BC Barge is due to be towed to Leman 27B, UKCS Block 49/27. The Barge will depart from Vlissingen, Netherlands on Wednesday 7th July, the tow will take 2 – 3 days,  with an estimated arrival date of 10th July.

Vlissingen, Netherlands - Lat: 51° 27.32’ N           Long: 03° 40.33’ E

Leman 49/27B -  Lat: 53° 03' 02.907"N                   Long: 02° 17' 03.382"E

The 27BC barge will become the new Leman 27BC jacket and it will be towed with no independent ‘project nav-aid’ systems in place. It will be hooked up to the current Leman 27B nav-aid system once the interface operations are complete.It is anticipated that the interface operations may take up to 21 days to complete. Therefore, the Leman 27BC jacket will be ‘blacked out’ with no nav aid system in place for the first 21 days of deployment, however commissioning time will be kept to the minimum necessary period.During this period the existing nav aid systemon the 27BP, BT and BD platforms will remain fully functional during all new nav aid preparatory works until such time as the new nav aids are ready to be commissioned. This notice will remain live until the BC nav aids have been fully commissioned.

Mariners are advised that the Precision 1 will be undertaking survey operations within the Triton Knoll Offshore Wind Farm export cable route from the 10th July 2021.

Operating within the Triton Knoll Windfarm Export Cable Route. The vessel will be towing survey equipment therefore it is requested that all vessels operating within this area maintain at least 500m distance from the vessel and pass at minimum speed to reduce vessel wash. 

The Precision 1 can be contacted via VHF radio channel 16.

For further information: Lee Cornwall, Triton Knoll Offshore Wind Farm, Tel: +44 (0) 7384 807293, email: l.cornwell@tritonknoll.co.uk

Triton Knoll Marine Coordination Centre, Mob Tel: +44 (0) 7384 807528, Tel: 0045 8213 6219, Email: tkmcc@smchse.com

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

Mariners are advised that the marker buoy has successfully been deployed within the boundaries of the Neart na  Gaoithe wind farm to mark the hazard identified in Notice to Mariners 149, issued on the 08/06/2021.  The coordinates of the marker buoy are shown in Table.

Schedule  

The marker buoy will be in position until the hazard has been recovered.   For updates on the progress of the works, information will be provided in the Weekly Notice of Operations available on  the NnG project website here https://nngoffshorewind.com/resources/.

Vessels Associated with the Activity 

Two guard vessels are currently on site supporting the Neart na Gaoithe Offshore Wind Farm construction. The guard  vessel will be two of the below, which can be contacted as follows, if required: 

General Safety Advice

Construction activities are ongoing within the boundaries of the Neart na Gaoithe Offshore Wind Farm.  Mariners are  advised to refer to the NnG Weekly Notice of Operations where up to date information regarding activities on site is  broadcast. A copy of this notice and the Weekly Notice of Operations can also be found at  https://nngoffshorewind.com/resources/ 

Marine Coordination 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.

Fisheries Liaison

Fisheries liaison associated with the activity will be co-ordinated by Natural Power. For any commercial fishery queries  please contact the NnG company Fisheries Liaison Officer (CFLO) Peter Berney, telephone: +44 (0)7391 402387 or email:  NnG.FLO@naturalpower.com. Offshore Fisheries Liaison Officers (OFLO) will be present on each construction vessel and  can be contacted via VHF Channel 16.

Distribution List 

A central list of recipients is maintained by the company Fisheries Liaison Officer; if you are not the appropriate recipient  of these notices, or do not wish to receive the notices in the future, please contact us at NnG.FLO@naturalpower.com.  A copy of this notice can also be found at https://nngoffshorewind.com/  

See detailed map on our bulletin website

Please be advised that, installation of the Havhingsten fibre optic telecommunication cable system is complete outside of 12nm within the North Sea and at the Seaton Sluice landing. The Whitley Bay stub works are scheduled for March 2021.

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

The entire cable system will comprise marine elements that pass from Denmark to the UK (NE region); from the UK (NW) to the Republic of Ireland; with two segments being installed into landfalls on the Isle of Man. 

The cable route in the NE region is shown below. Landfall was made at Seaton Sluice.

Installation was via industry standard burial tools including water jetting and ploughing. Cable burial has been performed to a target of 2m.

The Havhingsten cable crosses 4 pipelines within the UK North Sea, which will require external rock protection. Post-rock installation is now expected in March 2021. The cable crossings start at approximately 72km offshore and beyond.

Prior to rock placement there is a maximum of 50m of cable surface laid with Uraduct protection at each of the 4 crossings. Coordinates of the crossings are provided in the table below. It is advised that extra care is taken when vessels are operating near these areas and that no vessel should trawl within 250m from the listed coordinates.

Following 2 recent faults (caused by impact damage) in the same area and subsequent repairs to the BritNed HVDC Interconnector, the latest completed on 07/06/21, the repaired section although trenched, is still in the process of natural backfill and areas of exposure remain. A guard vessel (currently M/V FORTUNA) remains on site. 

We wish to remind ship’s captains of the presence of subsea cables and request that extra caution is exercised when operating near charted cables in order to avoid any incident. Due to changing seabed conditions it should not be assumed that all cables are buried.

A 50-metre exclusion zone is advised around the anchor chain for safety reasons.  

10 mooring line trenches, varying in length from 70m to 180m; up to 8 metres wide and up to 9 metres deep. These trenches are steep-sided (in many cases vertical, cut into the clay seabed).

10 anchor scars, consisting of shallow trenches (20-90 metres long), shallow-sided depressions (less than 2 metres deep) but with areas of significantly disturbed seabed, including clay boulders up to 3 metres in size.

A north cardinal buoy is now in position 75m north of the cable loop on the following location and display a very quick flashing white light.

The marker buoy will remain in position until July 2022 when cable replacement works are planned to be completed by.

Note fishing has been observed over subsea infrastructure including 40m L x 35m W x 11H Template structure that is within a 500m Safety zone.

The safety zone is to protect all parties and is a legally restricted area that can only be entered under Special Circumstances;

             1. To attempt to save a life or property,

             2. Owing to bad weather ,

             3. When in distress.

All vessels including fishing vessels must not fish within or transit over the 500m safety zone.

See detailed map on our bulletin website

See detailed map on our bulletin website

The Northern Producer FPF has been removed from it’s moorings and towed to port for decommissioning but the subsea assets within the Northern Producer FPF 500m zone will remain in place on the seabed and could pose a snag hazard to fishermen therefore the Thistle Alpha Platform ERRV will act as a guard vessel until the 500m zone clearance is performed in 2022.

This includes the 8 No Risers draped over the Mid Water Arch (MWA), the MWA Clumpweight Guide Frame, the Riser Base Structure (RBS) and the surface laid pipelines / Umbilicals.  The MWA will remain in the water column at a depth of 112m and will remain tethered to the seabed via the clumpweight guide frame. The risers will remain draped over the MWA with one end on the seabed and the other end will remain connected to the RBS so that they remain stable. The existing stabilisation mattresses will remain in place over the surface laid pipelines/umbilicals.

See detailed map on our bulletin website

The approximate dimensions of the Debris Cap is 4.5m x 3.9m x 1.4m with a weight of approximately 3.5 tonnes. It is not known whether the Debris Cap is lying within a 500m zone of the well. A 200m x 200m area centred on the well has been searched, with no sight of it. Therefore the exact location of the Debris Cap is unknown. The loss of the Debris Cap leaves the NW Schooner wellhead more vulnerable to snagging from trawler/fishing nets. The approximate size of the tree with over trawl legs deployed is 7.8m x 7.8m x 6m high.

Please be 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.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

There is no cable exposure evident in the South Field of the windfarm.

Details of Seabed - West Cluster

Note: 210m of 177mm dia. chain has been laid on seabed at each location towards the FPSO centre.

Details of Seabed - North East Cluster

Note: 210m of 177mm dia. chain has been laid on seabed at each location towards the FPSO centre.

Details of Seabed - Southern Cluster

Note: 30m pile is installed in this fast frame

See detailed map on our bulletin website

See detailed map on our bulletin website

The topsides has been removed from the Ninian North installation, leaving the jacket structure still in place. The top of the structure is approximately 6 metres above sea level. With the removal of the topsides, the remaining jacket structure is unlit and is not fitted with any navaids; cardinal buoys are located to the East & West.

See detailed map on our bulletin website

Please be advised that the installation of the Tampnet fibre optic cable is still ongoing and that there is currently approximately 4.5km of EXPOSED CABLE on the seabed as per attached drawing. We advise all seafarers and fishermen to keep clear of using any bottom equipment that might interact and damage the cable in vincinity of the route. We are also broadcasting and raising awareness from land and nearby guard vessels to all fishermen approaching the cable route. The installation is expected to be ongoing until mid September. 

Detailed below, to avoid hazardous interaction with these sections of exposed pipeline, pending the execution of mitigation works.

The riser line was severed below the surface buoy and it has not been possible to recover the items. Investigations as to the cause of the loss are ongoing.

Possible risk of entanglement from remaining riser line.

The SONAR imagery acquired during the recovery attempt indicated the riser line (the main aspect of concern) to be still attached to the anchor weight and suspended in the lower part of the water column. Given the elapsed time, the line will be fully saturated and neutrally buoyant and fully submerged. It is anticipated that the action of tidal currents on the line will cause it to knock down and eventually become entangled in the frame and other gear. Whilst it has not been confirmed, it is unlikely that the line would remain close to the surface.

These boulders have seemingly been deployed in groups at different times, with notification via the UKHO.

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

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

After the decommissioning of the MacCulloch FPSO / Field in UKCS Block 15/24, a Guard Vessel is no longer in position. 

The Donan (Dumbarton) Field, located in UKCS Block 15/20, has an out of use Gas Export pipeline (PL2324) which is still connected to a Tie-In Skid located within the previous MacCulloch subsea 500m zone. 

Please be aware that this subsea Tie-In Skid remains in place at this location.  The structure has been notified and recorded on the NDR / FishSafe websites since 2006/07, but has been previously monitored by the guard vessel.

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

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

The survey vessel, MV Titan Discovery will be conducting a detailed Multibeam Echosounder (MBES), Sidescan sonar and Sub Bottom Profiler inspection of the natural gas assets; IC1, IC2 and the Isle of Man Spur. The pipelines cross the Irish Sea with landfalls in; Scotland (Kirkcudbright), Isle of Man (Glen Moar) and Ireland (Loughshinny/Gormanston).

The survey will be conducted over July and August 2021, weather dependant, and is anticipated to start in Scotland and finish in Ireland, with the Isle of Man in the middle. The Titan Discovery will be displaying the relevant IRPCS day shapes and night lights and will be restricted in their ability to manoeuvre. Towed gear will be operated from the vessel with an approximate tow length of around 40-50m. An exclusion zone of 200m is requested.  2HCR3

The Jack up Barge HAEVA is located at the Galahad Installation, where it will commence HCF operations.

Please be aware that from 16th July 2021 for approximately 6 weeks Sheringham Shoal Windfarm will be having Transition Piece (TP) modifications/upgrades to all 88 Wind Turbine Generators (WTG).  The Vessel Olympic Artemis will be in field providing 24hour support during this time. Vessel will be displaying correct Colors (darkness)and Shapes (daylight).  Please navigate with extreme care during this period maintaining a safe distance, particularly in poor visibility and during the hours of darkness. Vessels will be monitoring VHF CH 16 at all times.

These operations will also be supported with the addition of 2 Crew Transfer Vessels (CTV’s).

See detailed map on our bulletin website

Site Survey in block 41/5, including 2D seismic, geophysical (SSS + MBES), grap sampling and shallow geotechnical (vibro-core + CPT). Mobilisation scheduled for August 5th. Expected duration: 11 days.

The survey vessel Marshall Art will be undertaking geophysical survey works of the Dogger Bank C Export Cable landfall area, involving towed equipment up to 200m behind the vessel. The towed equipment will be submerged with no surface markings.

During the operations the vessel will be restricted in its ability to manoeuvre and will display the appropriate day shapes and lights. Passing vessels are requested to maintain a minimum 500m safety distance from Marshall Art during operations, reducing speed to minimise wake disturbance.

A temporary marker buoy has been positioned at the North of the end of the exposed duct (the highest point above sea level). The exposed duct protrudes approximately 20m from the seabed. The highest point is approximately 2.4m above seabed level or 6.5m below surface at LAT.

No plans to recover object due to it's size

Survey operations are not expected to interfere with any other vessel but as it will involve a team of surveyors operating highly sensitive Survey Equipment including Multi Bean Echo Sounders, Sonar as well as Bottom Profiling Equipment a wide berth, minimum 500 meters, is requested to reduce speed if psossible.

The survey can be expected to last for approx. 2 months.

Fishermen are requested and advised not to set any gear close to any of the Turbine positions in the lead up to and during this period of survey work.

Please find attached the following Notice to Mariners for Leask Marine upcoming operations:

LM-NTM-SHE-Cable Securing

Leask Marine moorings will be onsite for the stated duration.

Colour yellow mooring buoys are marked with - flash yellow light – 1 FY5s – Light range 1NM

Vessels are requested to maintain a safe distance of 250 meters from submitted coordinates.

New Dates: 28-06-2021 to 31-07-2021

Main Vessel: C-Odyssey

Location: Water Sound

Client: Shefa

See detailed map on our bulletin website

The survey activities will be undertaken in three phases:

1) UXO Identification - Magnetometer survey to identrify potential UXO

2) Environmental Sampling - Approx. 120 stations along the survey route

3) Geotechnical CPTs and Vibrocores - Approx. 120 stations along the survey route

Start Date – 30/06/21     End Date – 11/08/21

See detailed map on our bulletin website

• Location Name: Columbus
• Well Co-ordinates: 57°20.968′N  002°05.237′E
• Tie-In Structure Co-ordinates: 57°20.979′N  002°05.198′E
• Rig Name: Maersk Resilient
• ERRV: Esvagt Sigma
• Safety Zone: 500 metre radius

See detailed map on our bulletin website

Mariners are advised that Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) is due to commence a pre-lay grapnel run (PLGR) and installation of the two export cables within the Neart Na Gaoithe (NnG) Export Cable Corridor. The PLGR is due to begin week commencing 14th  June 2021, at the earliest, with the installation of the first export cable commencing thereafter. The PLGR will be completed by the vessel Norne (call sign: PCJR), whilst the two export cables will be installed by the cable lay vessel (CLV) Cable Enterprise (call sign: 2FOV9).

The PLGR will be completed using a grapnel towed from the vessel. The grapnel will be deployed to retrieve any potential abandoned fishing gear or ships crane wires that may be present along the Export Cable Routes. Any debris recovered to deck will be retained on board the vessel for disposal onshore.

  For installation of each cable, laying will commence at the landfall, with the Cable Enterprise positioned as close to the horizontal directional drill (HDD) exit pit as possible, given the draught of the vessel. Once the CLV has laid the first approx. 750m of cable, a pull-in winch located onshore will draw this section through the HDD ducts. Once complete, the CLV will begin to lay the cable along the export cable route in the direction of the Wind Farm Area.  A number of small rigid-hull inflatable boats (RHIB) and guard vessels will be patrolling the cable corridor, with a Crew Transfer Vessel Celtic Guardian, (call sign: 21ZH5) also supporting.

The cable will be buried into the seabed by remotely operated vehicles launched by the Normand Pacific (call sign: LAXI7). The burial campaign for the first export cable is expected to commence in late-June; a subsequent Notice to Mariners will be issued prior to this work commencing, with further information.

Area of Operations

Mariners are advised that both the Norne and Cable Enterprise will be mobilised from Middlesbrough to work within the boundaries of the NnG Export Cable Corridor, within the coordinates shown. 

Please be aware that by virtue of its mode of operation and the equipment deployed, both the Norne and Cable Enterprise will at times be Restricted in their Ability to Manoeuvre 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 distance from both vessels of 500 metres when they are undertaking their work and showing the appropriate shapes and lights. An exclusion area of 500m either side of each export cable route for static fishing gear is requested. The existing nearshore exclusion area will also remain in place.

Vessels with bottom-towed gear are requested to be kept clear of a reduced exclusion area once the cable laying commences, which will be notified by the Company Fisheries Liaison Officer. 

Schedule  The PLGR and cable installation works is due to begin on the first export cable week commencing 14th June 2021,weather dependent. The same works on the second export cable is due to begin in mid-July 2021. It is anticipated that the PLGR and cable installation works on both cables will be completed in August, weather dependant.

Construction works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week), unless notified otherwise.  

For updates on the progress of the works, information will be provided in the Weekly Notice of Operations available on the NnG project website: https://nngoffshorewind.com/downloads/. 

Vessels Associated with the Activity

A spearpoint grapnel will be used by the Norne, which will consist of a shank with five prongs with reinforced tips. The  grapnel will be 1.5m in length and 0.9m wide, with a total weight of 250kg. The spearpoint grapnel  will be connected to the Norne by a towing wire, and both gifford and rennie chain grapnels. 

Port of Operation The Norne and Cable Enterprise will both mobilise from Middlesbrough, UK. 

Adverse weather conditions  Upon adverse weather conditions, if the Norne and Cable Enterprise are not able to hold on position, they will seek shelter or return to Port within the Firth of Forth. 

General Safety Advice  Construction activities are ongoing within the boundaries of the Neart na Gaoithe Offshore Wind Farm.  Mariners are advised to refer to the NnG Weekly Notice of Operations where up to date information regarding activities on site is broadcast. A copy of this notice and the Weekly Notice of Operations can also be found at https://nngoffshorewind.com/downloads/ 

Marine Coordination 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.

Fisheries Liaison  Fisheries liaison associated with the activity will be co-ordinated by Natural Power. For any commercial fishery queries please contact the NnG company Fisheries Liaison Officer (CFLO) Peter Berney, telephone: +44 (0)7391 402387 or email: NnG.FLO@naturalpower.com. An Offshore Fisheries Liaison Officer (OFLO) will be present on both the Norne and Cable Enterprise and can be contacted via VHF Channel 16. 

Distribution List  A central list of recipients is maintained by the company Fisheries Liaison Officer; if you are not the appropriate recipient of these notices, or do not wish to receive the notices in the future, please contact us at NnG.FLO@naturalpower.com. A copy of this notice can also be found at https://nngoffshorewind.com/  

Survey operations will be continuous, 24 hours a day, the vessel towing subsea sensors up to approximately 300m behind the vessel.The Fugro Frontier will be surveying prescribed survey lines, which will require large turning circles. It is therefore requested that all vessels maintain a minimum 3000m separation distance from the survey vessel and pass at reduced speed. During operations the vessel will be restricted in its ability to manoeuvre and will display the appropriate day shapes and lights.

See detailed map on our bulletin website

Petrofac Facilities Management Ltd (PFML) propose to drill and complete the EV01 well in the Evelyn field, commencing around the 1st July 2021 for approximately 90 days. The drilling operation will be carried out using the Stena Drilling owned, Stena Don semi-submersible drilling rig.

See detailed map on our bulletin website

See detailed map on our bulletin website

This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

Your FishSAFE Information will be updated in the next release.

This safety zone may be new, or an amendment to an existing zone. It may also replace a safety zone in place around a platform, or other surface structure for the purposes of decommissioning.

Your FishSAFE Information will be updated in the next release.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

Mariners are requested to remain a distance of 50m2 away from the assets

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.’   https://kis-orca.org/safety/the-risks-of-fishing-near-cables-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. 

As part of the Hywind Scotland Wind Park, Equinor has subcontracted Akvaplan-niva to perform a survey using an autonomous vehicle – Sailbuoy – in the park area. The Sailbuoy is only 2 meters long and weighs 60 kgs. It was deployed from Bergen on the 8th June and estimated arrival at Hywind Scotland is 29th June.

The Sailbuoy will have a pre-programmed mission plan, and will communicate to shore via satelittes. The Sailbuoy is driven by wind and sun, and the vehicle is equipped with solar panel and an echosounder as well as sensors for temperature, salinity and fluorescence.

The purpose of the study is to collect relevant data on fish in the Hywind Scotland area using instrumented glider. The method is expected to mainly give data on prevalence and biomass, and less information on biodiversity. The data gathering in Hywind Scotland will take approximately 30 days from arrival and completion is estimated around 29th July. After ended campaign in the wind park, the Sailbuoy returns back to Bergen for retrieval. The results from the glider campaign is important also for further technology development.

The Sailbuoy is collision and shock proven. It will be labelled with contact information.

Update June 10:

A second attempt at retrieval of the sound recorder in Hywind Scotland Pilot Park will be made by end of August.

Update February 5:

Successful retrieval of control sound recorder performed January 24. Failed retrieval of the sound recorder in wind park.  A second attempt for retrieval of the sound equipment in the Hywind Scotland Pilot Park is being planned. The notice is prolonged and the location of the retrieved control equipment is removed from the notice.

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As part of the Hywind Scotland Wind Park, Equinor has subcontracted Jasco Applied Sciences to perform sound recordings in the park area and in a control location in Buchan Deep (near cross over point between the FORTIES to CRUDEN Bay oil line and the GAS line).

The purpose of the sound measurement study is to document the operational noise from floating offshore wind turbines and their substructures, mooring lines and cables. It is part of an internal Equinor Research &Technology project that aims to increase knowledge on possible environmental implications of floating offshore wind, i.e. in this particular study, the possible impact ranges of sound from the wind park on marine mammals and fish. The results from the sound measurement study is important also for further technology development.

The Equinor contracted “MCS Swath1” (crew vessel) will be used for the deployment and retrieval of the sound recorder equipment (hydrophones). The field activity in connection with both deployment and retrieval will take one day, however, the recording period will be approximately 3 months from ultimo October 2020 to ultimo January 2021.

The recorders were deployed October 21. Yet, no exact date is set for the retrieval of the equipment (ultimo January 2021).Activity prolonged.

All Equinor installed equipment shall remain in position for the duration of the survey, but all equipment will be removed from seabed when the recording period is over. Also, there will be no bouys on sea surface or lines in the water column. All equipment will be placed on sea floor at approximately 100 meters depth by the help of an anchoring plate, which fastens the equipment and eliminates drifting of equipment. The equipment will have a height of maximum 1 meter above seabed, and the plate mooring system has the dimension 914 x 527 x 864 mm.

This equipment collects data and information of environmental importance and could get damaged or lost if trawled over.

When the equipment is retrieved, the acoustic release will be activated and the equipment will be lifted by crane.

Positions for recorders in wind park  (The Control was retrieved January 24 2021 and location is removed from the map in the active notice.)

Vessel Specification

Details of the vessel MCS Swath1 can be seen via the following document.

https://www.maritimecraft.co.uk/files/MCS-SWATH-1.pdf

According to information in the specification, a deck crane of load 500 kgs is installed. The crane and a mobile winch will be used to deploy and retrieve sound recording equipment.

The drilling operation will be carried out by Noble Hans Deul drilling rig.   

The Geophysical Survey is being carried out by GEOxyz Offshore on behalf of Jersey Oil and Gas plc. The Survey is one of a series of surveys being carried out by GEOxyz Offshore in the vicinity of the proposed Buchan Fixed Facilities and the Sandford Bay location, close to Peterhead. 

The Geophysical Survey will commence at the location of the proposed Buchan Fixed Facilities, some 111km from Peterhead, and terminate in Sandford Bay, approximately 1km offshore in the vicinity of the SSE Peterhead Powerstation. A further survey is planned between this location and the cable landfall close to the Powerstation, which is the subject of a separate notice. The survey will commence on between 15/07/2021 and 21/07/2021 and is scheduled to take between 12 and 16 days, depending on weather. 

Following this survey, the vessel will continue to carry out a subsequent Geotechnical  Survey from the Buchan location to the Forties pipeline. This is the subject of a separate notice.  

The survey will be carried out by the vessel Geo Ocean III, call sign LXGP. 

All vessels shall pass at a safe speed and distance, while fishing vessels shall remain at a safe distance (approximately 500m)(COLREGs Rule 16 & 18) from the areas identified during survey activities. The Geo Ocean III will be restricted in her ability to manoeuvre and shall deploy sonar equipment during the course of the survey. The survey vessel will monitor Channel 16 at all times. Mobile contacts for the survey are listed at the end of this Notice. 

The Geotechnical Survey is being carried out by GEOxyz Offshore on behalf of Jersey Oil and Gas plc. The Survey is one of a series of surveys being carried out by GEOxyz Offshore in the vicinity of the proposed Buchan Fixed Facilities and the Sandford Bay location, close to Peterhead. 

The Geotechnical Survey will commence at the location of the proposed Buchan Fixed Facilities, some 111km from Peterhead, and terminate approximately 1 km offshore in Sandford Bay, in the vicinity of the SSE Peterhead Powerstation. The survey will commence between 09/08/2021 and 21/08/2021 and is scheduled to take between 12 and 16 days, depending on weather. 

The survey will be carried out by the vessel Geo Ocean III, call sign LXGP. 

All vessels shall pass at a safe speed and distance, while fishing vessels shall remain at a safe distance (approximately 500m)(COLREGs Rule 16 & 18) from the areas identified during survey activities. The Geo Ocean III will be restricted in her ability to manoeuvre and shall deploy seabed analysis equipment and will carry out seabed coring / sampling equipment during the course of the survey. The survey vessel will monitor Channel 16 at all times. Mobile contacts for the survey are listed at the end of this Notice. 

4 x clump weights to be installed for Mariner 8Y wellhead load relief system around 5th May.

This will be followed up with rig mooring pre-lay in June for planned rig (West Hercules) arrival in July.

All subsea components will be guarded by the Mariner Field ERRV until the rig arrives.  

The Geotechnical Survey is being carried out by GEOxyz Offshore on behalf of Jersey Oil and Gas plc. The Survey is one of a series of surveys being carried out by GEOxyz Offshore in the vicinity of the proposed Buchan Fixed Facilities and the Sandford Bay location, close to Peterhead. 

The Geotechnical Survey will commence at the location of the proposed Buchan Fixed Facilities, some 111km from Peterhead, and terminate 17km to the northeast at a location over the subsea Tweedsmuir manifold. The survey will commence between 08/08/2021 and 19/08/2021 and is scheduled to take up to two days, depending on weather. 

Following this survey, the vessel will continue to carry out a subsequent Geotechnical  Survey from the Buchan location to Sandford Bay. This is the subject of a separate notice.  

The survey will be carried out by the vessel Geo Ocean III, call sign LXGP. 

All vessels shall pass at a safe speed and distance, while fishing vessels shall remain at a safe distance (approximately 500m)(COLREGs Rule 16 & 18) from the areas identified during survey activities. The Geo Ocean III will be restricted in her ability to manoeuvre and shall deploy seabed analysis equipment and will carry out seabed coring / sampling equipment during the course of the survey. The survey vessel will monitor Channel 16 at all times. Mobile contacts for the survey are listed at the end of this Notice. 

The Geotechnical Survey is being carried out by GEOxyz Offshore on behalf of Jersey Oil and Gas plc. The Survey is one of a series of surveys being carried out by GEOxyz Offshore in the vicinity of the proposed Buchan Fixed Facilities and the Sandford Bay location, close to Peterhead. 

The Geophysical Survey will commence at the location of the proposed Buchan Fixed Facilities, some 111km from Peterhead, and terminate 27km to the south at a location over the Forties Pipeline. The survey will commence between 03/08/21 and 13/08/21 and is scheduled to take up to three days, depending on weather. 

Following this survey, the vessel will continue to carry out a subsequent Geotechnical Survey from the Buchan location to the SAGE pipeline. This is the subject of a separate notice.  

The survey will be carried out by the vessel Geo Ocean III, call sign LXGP. 

All vessels shall pass at a safe speed and distance, while fishing vessels shall remain at a safe distance (approximately 500m)(COLREGs Rule 16 & 18) from the areas identified during survey activities. The Geo Ocean III will be restricted in her ability to manoeuvre and shall deploy seabed analysis and coring / sampling equipment during the course of the survey. The survey vessel will monitor Channel 16 at all times. Mobile contacts for the survey are listed at the end of this Notice. 

The Geotechnical physical Survey is being carried out by GEOxyz Offshore on behalf of Jersey Oil and Gas plc. The Survey is one of a series of surveys being carried out by GEOxyz Offshore in the vicinity of the proposed Buchan Fixed Facilities and the Sandford Bay location, close to Peterhead. 

The Geotechnical Survey will commence at the location of the proposed Buchan Fixed Facilities, some 111km from Peterhead, and terminate 38km to the northwest at a location over the SAGE Pipeline. The survey will commence between 08/08/2021 and 19/08/2021 and is scheduled to take up to three days, depending on weather. 

Following this survey, the vessel will continue to carry out a subsequent Geotechnical  Survey from the Buchan location to the location of the subsea Tweedsmuir manifold. This is the subject of a separate notice.  

The survey will be carried out by the vessel Geo Ocean III, call sign LXGP. 

All vessels shall pass at a safe speed and distance, while fishing vessels shall remain at a safe distance (approximately 500m)(COLREGs Rule 16 & 18) from the areas identified during survey activities. The Geo Ocean III will be restricted in her ability to manoeuvre and shall deploy seabed analysis equipment and will carry out seabed coring / sampling equipment during the course of the survey. The survey vessel will monitor Channel 16 at all times. Mobile contacts for the survey are listed at the end of this Notice. 

Array Cable Seabed  Installation

Ørsted will be commencing pre-lay surveys and seabed preparation for array cable installation with the Simar Esperanca and rock deployment with the Flintstone on or around 21st March 2021, shortly followed by array cable installation itself on or around 15th April 2021. In addition to this, Seaway Offshore Cables (SOC) and Sulmara may be trialling an autonomous survey vessel within the Hornsea Project Two array area which will be supported by a dedicated support vessel, queries related to this scope should be directed to SOC / Sulmara.

Works will be continual and intermittent throughout this period. The works will be undertaken by a number of vessels at different times according to the Project schedule. This Notice will be updated and re-issued when works are complete.

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

Please be advised that construction activities are ongoing within the wind farm, supported by Crew Transfer Vessels (CTVs) and survey vessels intermittently. The Deep Cygnus will be mobilising to site as a support vessel to the ongoing construction works on or around 28th May 2021. The MHO Grimsby continues to carry out construction geophysical surveys intermittently utilising a hull-mounted system within the proposed Hornsea Project Two Offshore Wind Farm site and the Wind Innovation remains on the project for construction support.

It is requested that all vessels operating near the construction area keep a safe distance and pass at minimum speed.

See detailed map on our bulletin website

Mariners are advised that Scottish Sea Farms intend to deploy scientific equipment oat the southern end of Lismore.  Two bottom mounted ADCPs rigged in j-shaped moorings and marked with surface buoys will be deployed off the south end of Lismore, one in each location shown in the attached document.

Work will commence beginning Tuesday 25th May at the earliest and deployment is expected to be completed that week using the workboat Sarah Louise, callsign 2GA03.  These moorings are expected to be in place until the beginning of September 2021.

Enquiries should be directed to Rachel Speirs at Scottish Sea Farms using the email address surveys@scottishseafarms.com.

The current profiler is scheduled to be deployed on the week commencing June 14th 2021 by the vessel 'Coastworker'. The current profiler will be isolated from the surface completely with no buoys or markers attached. The survey frame is approximately 1m high and will be attached to a clump weight by a weighted rope. The clump weight will be attached to floats that will sit aprroximately 3m above the seabed. A mooring diagram for the current profiler has been attached. 

The current profiler will be in position on the seafloor for a minimum period of 30 days.

As part of the preparation works for cable installation in the nearshore area of Thorntonloch, two short trenches of approximately 800 metres (m) are currently being excavated for a section of each export cable, with the material temporarily being side cast. The height of the side cast material will temporarily reduce the navigable water depth by up to 1.5m, which, due to the shallow water depths in the nearshore area, is greater than 5% of the water depth in some areas. To notify maritime users of this temporary change, a conical marker buoy has been installed at the seaward extent where the reduction is no longer greater than 5%.

The conical marker buoy installed is a SL B700, 1510mm in height and 700m diameter shown in Figure 2. The buoy has an interconnected mooring attached to a clump weight and an installed lantern. The lantern is emitting a yellow light with a character of flashing once every 5 seconds at a minimum range of 2 miles.

Schedule The conical marking buoy will be in position until the temporary side cast material is backfilled and the water depth is no longer reduced. This is expected to be completed towards the end of July 2021.

Please be advised that Tarmac Marine Ltd and Hanson Aggregates Marine Ltd will be carrying out a seabed grab sampling survey in the Severn Estuary, located on and around the Middle and Welsh Grounds sandbanks. Survey operations are expected to last several days and will be carried out by Ocean Ecology on the Seran Las starting no earlier than June 1st 2021.

Please be advised that Moray Offshore Windfarm (East) shall commence WTG installation on the previously installed jackets (Figure 2). WTG’s will be installed by the JUV Blue Tern. Once the WTG’s have been installed Acta Centaurus will transfer teams of technicians using a walk to work system to carry out commissioning works in readiness for energisation. Acta Centaurus will be supported by 2 CTV’s (HST Harri and Windcat 40). Installation and commissioning works will commence circa 05th January 2021 until completion

The jack-up rig Maersk Highlander is alongside Elgin WHP B  – within 500m zone for the next 6 moths (approximately)

Please be advised that Repsol Sinopec Resources UK Limited (RSRUK) intend to carry out subsea removal & remediation works in the Buchan & Hannay fields during Q2/Q3 this year, commencing on the 1st June 2021.

The intention is to execute this works over two campaigns: •    Campaign 1 – mobilising 1st June for approximately 20 days  •    Campaign 2 – mobilising 10th August for 40 days

Summary of the Offshore Scope, in accordance with the approved decommissioning programme is: •    Rigid pipelines removal (13.5km); •    Flexible Pipelines / Umbilical removal (15.6km); •    Subsea structures removal (215Te); •    Rigid tie-in spool-pieces removal (67Te); •    Flexible jumpers/umbilical jumpers removal (0.47km); •    Deposits removal (866Te); •    Debris removal (five grid zones); •    Rigid pipelines & Umbilical Ends remediation (1.45km of remediation).

This infrastructure is contained with the Buchan & Hannay fields, with a large proportion of the works being focused around the Buchan template 500m subsea safety zone.  The coordinates for the area are:   A small part of the works (2-3 days) will take place the Forties Charlie end of the Buchan export pipeline, within the Forties Charlie 500m zone.

The work will be carried out using Construction Support Vessel’s (CSV), support by WROV.  

Pipeline Works Authorisation variation and supporting permits are currently in the approval process.  

These vessels will be supported by the” Spectrum 1” call sign: 2CQX3 and” Dalby Tees” call sign: 2FIA7 carrying out crew transfer operations. Works are to take place at various locations across the London Array windfarm As part of this work, Dynamic Bend Stiffeners will be installed using, subsea installation tools and divers within the London Array Wind Farm. Vessel: C-Fenna C-Fenna Dive Support Vessel (DSV) has a length of 26.5m and breadth of 11.0m. The C-Fenna uses a four-point mooring system. The C-Fenna will undertake mooring deployment within 150m of the assigned WTG. Equipment will be periodically deployed and suspended from the vessel crane during the work.

Planned Diving Locations and Restricted Access Zones:

The works is expected to commence on the 1st of May 2021 and continue for approximately 6 months. During this period diving locations will be selected from the list of locations as detailed in Figure 1. A total of three locations could be operational at any one time. Information about what location is presently being worked will be transmitted over VHF informing all local vessels of restrictions.

Prior to commencing diving operations 4 chain clump weights mooring will be deployed at the required WTG location. These moorings will be positioned as required to avoid known obstruction and expected current flows but will be within 150m radius of the WTG. Once deployed a 150m exclusion zone will be placed around the WTG. The Mooring will consist of two 12t chain cluster weights connected to a surface buoy. A yellow light flashing yellow once every 5 seconds.

The Works shall comprise the location of the following mobile installation:

The mobile drilling unit (MoDU) - PR5 (Prospector 5)

The Works shall be located at:

57 10' 05.97"N 01 05' 27.27"E

Quad/Block - 22/21c

We will be deploying two scientific Acoustic Doppler Current Profilers on the sea bed for 6-12 months from May 2021 to collect currents data for environmental monitoring and hydrodynamic model validation.  The instruments have no surface markers and will be recovered using acoustic releases.  One of the instruments will be inside a low profile trawl-resistant frame (Little Minch, west of Skye) and one inside a steel frame (Loch Erisort).  See attachment for photos of the frames, a chart with their position and their positional details.

See detailed map on our bulletin website

Partrac is to deploy two large metocean buoys (E03 and E13) at two separate locations approximately 18 miles northwest of Cromer and 28 miles north of Cromer in the southern North Sea 

Once deployed, please maintain a 500m exclusion around each buoy.

Deployment is estimated to be carried out over one day from the 5th May 2021, weather permitting.

The deployments will be completed by the vessel Isle of Jura.

The surface buoys will include: AIS; A day shape of yellow St Andrews Cross; radar reflector; and yellow navigation light.

The metocean buoys record meteorological data and are anchored to the seabed by means of a mooring chain and a ground weight. The buoy has dimensions of 4m x 4m, and when deployed the tallest mast on the buoy sits approx. 4m above the water line  

The subsea service company DeepOcean will perform a series of campaigns to prepare, install, commission and protect a new subsea drilling template on the Yme field development. The subsea activities will result in these subsea assets being temporarily exposed with a reduced level of overtrawlability. Trawling within a Caution area of radius 300m around 57°45' 21.669"N 004°22' 04.416"E(WGS 84) may potentially lead to injury, loss of trawling/ fishing equipment, and/or damage to DeepOcean and/or Repsol Norge AS assets.

The location will be marked by a virtual AIS buoy, monitored by the Equinor Marin radar surveillance, and by the Guard vessel Esvagt Corona during this period. Equinor Marin, the Esvagt Corona and Yme Platform Mærsk Inspirer will attempt to contact fishing vessels approaching the aforementioned location.

See detailed map on our bulletin website

See detailed map on our bulletin website

The marine survey works are being carried out by Next Geosolutions UKCS Ltd. on behalf of National Grid Electricity Transmission Plc and Scottish Hydro Electric Transmission Plc.

The marine survey activities are planned to commence at Sandford Bay and close to Peterhead from the 20th April 2021. Upon completion of the Nearshore Marine Survey at Peterhead the vessel will transit to Bridlington to complete the Nearshore Marine Survey at Bridlington. Works will continue along the offshore route until August 2021. The marine survey works covered by this NtM are to be conducted by three survey vessels, divided into the following activities, as indicated:

The Nearshore works are to be conducted West, of point AC6, Longitude 1° 43.5’W at Peterhead and West of point AC61, Longitude 0° 03.7’W South of Flamborough Head, Bridlington, reference Figures 1 and 2 overleaf. All vessels shall pass at a safe speed and distance, whilst fishing vessels shall remain at a safe distance (approximately 500 meters) (COLREGs Rule 16 & 18) from the areas identified during marine survey operations. The aforementioned survey vessels will be restricted in her ability to maneuver 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.

See detailed map on our bulletin website

See detailed map on our bulletin website

The Flotel Safe Caledonia is alongside ELGIN PUQ – within 500m zone. Providing additional accommodation for ongoing fabric maintenance campaign.

See detailed map on our bulletin website

See detailed map on our bulletin website

Decommissioning and removal of the Brae Bravo Platform will be undetaken throughout 2021. Removal of topside modules and flare bridge will be undertaken ahead of removal of the main jacket in 2022.

Vessels will be operating near to and within the 500m safety zone as indicated.

Thialf

The Thialf will be alsongside the Brae Bravo platform between the 15th of April 2021 and the 24th of May 2021.

Bylgia

The Bylgia will enter the worksite between the 1st of May 2021 and 3rd of may 2021.

Sleipnir

The Sleipnir will be alsongside the Brae Bravo platform between the 15th of April 2021 and the 24th of May 2021. The Sleipnir will then return to the field to continue removal works circa 15th July2021.

See detailed map on our bulletin website

See detailed map on our bulletin website

The Safe Boreas accommodation vessel is being located into the Buzzard field for the turnaround period, beginning on the 18th April 2021. The accommodation vessel will use dynamic positioning and will be located within the 500 m exclusion zone of the Buzzard Platform for up to 190 days. The Safe Boreas will be linked to Buzzard QU Platform via a gangway interface.

Survey completion is anticipated by the end of July 2021. The full scope of the works is anticipated to take 90 days to complete, with approximately 45 days duration surveying the proposed export cable corridor and 60 days duration surveying the proposed windfarm array areas.

The vessel Northern Storm call sign: MISA7 will be utilised for this survey. A local scout vessel is also contracted to reduce potential for static fishing gear interactions.

The survey area will be covered using a full geophysical survey spread including towed equipment. It is requested that all vessels operating within the area keep a safe distance (at least 500m) and pass at minimum speed/reduced wash.

See detailed map on our bulletin website

4 x Metocean monitoring buoys will be in place at the Rosebank Field until approximately Q4 2021.

3 of these buoys are subsurface with only the wave monitoring buoy on the surface.  

The wave buoy is painted yellow, equipped with solar panels, flashlight, active and passive radar reflectors. The active radar reflector responds to interrogating X-band radar (9.3-9.5 GHz)

Two jack-up vessels, Capall Mara (MBSF3) and C57 Red Squirrel (J8B5722), will carry out a small amount of seabed preparation operations and undertake trenching works along a short section of the nearshore cable route.

The Capall Mara backhoe dredger will work along the two cables routes within the nearshore area, a first pass will be made where the vessel will reposition boulders between KP0.65 and KP1.4 followed by a second pass of each route where the vessel will excavate a trench within which the cable will be laid.

Excavated material will be temporarily repositioned to the side of the trench and will be backfilled by the Capall Mara once the nearshore cable installation is completed.

C57 Red Squirrel will work at KP0.65, to excavate two pits at the existing HDD exits and conduct minor construction works associated with the HDD exit point. The jack up vessel C57 Red Squirrel will arrive on site supported by two tugs, Forth Trojan (2FYM4) and The Battler (MGHD9).

A Crew Transfer Vessel, Celtic Guardian (21ZH5), will transfer personnel between the Capall Mara and C57 Red Squirrel and Eyemouth harbour each day. Celtic Guardian will also support with periodic minor surveys of the route. A dive vessel, CRC Tempest (MYUY7) will also work alongside the C57 Red Squirrel providing dive support associated with the minor HDD Construction works, as required.

Vessels are requested to remain at least 500 metres away from the Capall Mara and C57 Red Squirrel. Static fishing gear is requested to remain removed from the updated exclusion area

Area of Operations Mariners are advised that the Capall Mara and C57 Red Squirrel, alongside a number of supporting vessels, will be mobilised to work within the nearshore area of the NnG Export Cable Corridor' The nearshore exclusion zone will replace the existing exclusion area in place from the date of this notice.

Schedule The pre-enabling construction works are due to recommence on the 13th March 2021, at the earliest, and is expected to last approximately six weeks, until 30th April 2021, weather dependent. After this work, the preparation for cable installation will commence, in early May 2021, ahead of cable installation in June and July 2021. A further notice to mariners will be issued outlining the next phase in more detail.

Weather permitting, construction works will be carried out on a continuous basis (i.e. 24-hour working, seven days a week) on the Capall Mara and on a daytime only basis (i.e. 12-hour working, seven days a week) on the C57 Red Squirrel.

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website

See detailed map on our bulletin website