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Maintenance of Met Mast - Moray (East)



Please be advised that moray offshore windfarm (east) limited will be carrying out some maintenance and survey works on the meteorological mast.


Windfarm support vessel 'Waterfall' will be assisting in operations with work commencing from 4th August with expected competion 7th august. 

Further details of the met mast are provided in figures 1 and 2, in addition to table 1.

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Construction of wind farm - Moray East



Due to the construction of the Moray East Offshore Wind Farm, there are several elements to this notice - safety zones; construction schedule; and buoy positions.


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.

 

 

Company,

Vessel &

Call Sign

Survey Area

 

Survey Area

Start Timeframe & Duration

Kinnaird Marine

GV Replenish

MASY7

As above

 

As above

1st May 2019 for approximately 34 months

Kinnaird Marine

GV BOUNTIFUL

MJLF4

As above

 

As above

30th April 2020 for approximately 20 months

Seajack Scylla

3FSA3

As above

 

As above

29th June 2020 for approximately 12 months

Resolution

MBCZ5

As above   As above 12th August 2020 for approximately 1 month

Boa Sub C

LAGE8

As above   As above 21st June 2020 for approximately 6 months

Windcat17

2BYDS

As above   As above 9th August 2020 for approximately 1 month

C-Fenna

MBAH3

As above   As above 6th July 2020 for approximately 4 months

C-Spartan

2BOO9

As above   As above 6th July 2020 for approximately 4 months

Havila Pheonix

C6BD2

As above   As above 17th July 2020 for approximately 4 months

NKT Victoria

LAWV7

As above   As above 17th July 2020 for approximately 4 months
Olympic Triton As above   As above from July onwards

Kinnaird Marine

GV Kinnaird 

GHNE

As above

 

As above

from 16th July onwards

 

 

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Export Cable Installation - Hornsea Project Two



Ørsted have commenced the dredging scope for export cable installation and will be commencing pre-lay grapnel run activities on or around the 23rd August 2020 and are continuing construction of the Hornsea Project Two Offshore Wind Farm.


Array Cable Seabed Preparation and Installation World Marine Offshore will be commencing pre-lay grapnel run activities using the Wilson Adriatic Call Sign: OYOJ2 on or around 23rd August 2020. Cable installation and burial activities will commence in Q1 2020 through to Q2 2021. 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

 

Note that the vessels will have limited manoeuvrability, some vessels will be operating on anchors, 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.

 

 

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Completion of Explosive Ordnance - Hornsea Project Two



Mariners are advised that the Explosive Ordnance Detonation (EOD) phase for the pre-construction stage of Hornsea Project Two is now completed.


Hornsea Project Two confirms the presence of 7 Unexploded Ordnance (cUXO) and 2 suspected UXO (sUXO) which remain undetonated within the Hornsea Project Two Wind Farm area. There are no plans to clear these remaining UXO.

All vessels are requested to maintain the required safe distances as defined from the coordinates

 

It should be noted that ongoing seabed preparation for construction, as well as construction activities themselves, may identify further UXO which may need to be cleared from the site. Separate notices will be issued in this case.

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Deployment of Buoy - Project Erebus Floating Offshore Wind Farm



A Floating LiDAR system and wave buoy are due to be deployed within the boundary of the proposed Erebus Floating Offshore Wind Farm (FLOW) project site. They will be maintained in position via appropriate mooring systems for a 12-month period.


Floating LiDAR  Yellow 'X' Shaped Topmark Fl (5) Y 20s lilght (5nnm range) 

wave Buoy   Yellow  Fl (5) Y 20s light (2-3nm range)

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Survey - Project Erebus Floating Offshore Wind Farm



A geophysical survey is due to be undertaken of the proposed Erebus Floating Offshore Wind Farm (FLOW) project. The survey will cover the main offshore array areas, plus 1km buffer and the proposed export cable corridor (450m width).


A geophysical survey is due to be undertaken of the proposed Erebus Floating Offshore Wind Farm (FLOW) project. The survey will involve the use of Multibeam Echosounder (MBES), Sidescan Sonar (SSS), Sub-Bottom profiler (SBP) and Magnetometer equipment, some of which will be towed sub-surface astern of the vessels.

The survey will cover the main offshore array areas, plus 1km buffer and the proposed export cable corridor (450m width). Closer to shore, the survey corridor will split to cover four potential landfalls. 

The work will be undertaken by four (4) vessels, operated by the survey contractor.

Icent Spirit - Call Sign: 2DCF8

Seazip Fix - Call Sign: PCDE

Seren Las - Call Sign: MDAH2

TBC

 

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Survey - Hornsea Project Four



Orsted Hornsea Project Four Limited will be carrying out offshore geophysical surveys from 14 August 2020 for the cable landing of the proposed Hornsea Project Four Offshore Wind Farm within the UK Sector of the North Sea, off the coast of E. Yorkshire


Hornsea Four will be carrying out a geophysical survey with the vessel Fugro Seeker Call Sign: 2HC52

The operations are planned to commence on or around 14 August 2020 and last approximately 3 weeks. The exact survey dates are dependent on weather and work progress, but the forecasted completion date as of the publication date of this notice is the end of August 2020.

The survey areas will be covered using a full geophysical survey spread including towed equipment which may be up to 400m behind the vessel. It is requested that all vessels operating within the area keep a safe distance (750m) and pass at minimum speed.

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Construction of Wind Farm (Triton Knoll)



Activities are continuing related to the development of the Triton Knoll wind farm. For background information visit: http://www.tritonknoll.co.uk/


Mariners are advised of the offshore construction status at the Triton Knoll Offshore Wind Farm:

 

The following vessels commencing operations at Triton Knoll Offshore Wind Farm

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

MTSL Avocet Crew Transfer Vessel 2DXB6 235082698 9609603 Grimsby 24/08/2020

 

Operating predominantly within the Triton Knoll Offshore Wind Farm Array.  Activities include, Foundation Installation, Inter Array Cable Installation, Crew Transfer Operations, Guard Vessel Operations, Demarcation Buoyage Maintenance & Secondary Works on Installed Foundations.

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Sorrento

Guard Vessel

SXLE

235087639

N/A

Grimsby

28/12/2019

Precision 1

Guard Vessel

2FCD2

235089165

N/A

Hull

28/12/2019

Seacat Intrepid

Crew Transfer

2HWU6

235107284

N/A

Grimsby

02/01/2020

Seaway Strashnov

Heavy Lift Vessel

5BNL2

212905000

9452701

Rotterdam

06/01/2020

Manta

AHTS

ORKJ

205340000

9261487

Rotterdam

05/01/2020

Seraya

AHTS

9HA4875

248942000

9662368

Rotterdam

06/01/2020

Esvagt Froude

Service Operations Vessel

OWWN2

219590000

9703461

Grimsby

02/02/2020

Esvagt Wind 1

High Speed Craft

XPE6305

219019815

N/A

Esvagt Froude

02/02/2020

Seacat Courageous

Crew Transfer Vessel

2IDC8

235108711

N/A

Grimsby

25/04/2020

Innovation Jack up Installation Vessel DHUR2 218781000 9603453 Rotterdam 16/06/2020
Spirit Cable Installation Vessel 5BWK4 212471000 9496458 Rotterdam / Hull 26/06/2020
Siem Day Service Operations Vessel LAFB6 257651000 9660102 Rotterdam / Hull 27/06/2020
Drifa Guard Vessel HP7331 355507000 8133138 Den Helder 01/07/2020
Ndeavor Cable Installation Vessel 5BVG3 209852000 9650212 Rotterdam / Hull 05/07/2020
MCS Blue Norther High Speed Craft 2GDD5 235096374 9662435 Grimsby 02/07/2020
MCS Pampero High Speed Craft 2FKV2 235092103 9678628 Grimsby 02/07/2020
MTSL Falcon Crew Transfer Vessel 2FD04 235090347 N/A Grimsby 15/07/2020
Afon Cefni Buoy Maintenance Vessel 2FYX2 235095403 9258181 Hull 15/07/2020

Dalby Don

Crew Transfer Vessel

2IMZ6

235111112

N/A

Grimsby

18/02/2020

 

Vessels operating within both Triton Knoll Offshore Wind Farm Export Cable Route.  Activities include Cable Installation and Guard Vessel Duties.

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

Glomar Arctic

Guard Vessel

HO9083

371278000

8711473

Den Helder

05/06/2020

Glomar Advance

Guard Vessel

HO5178

370048000

8205814

Den Helder

25/06/2020

Olympic Zeus Offshore Construction Vessel LAUR 258060000 9424728 Aberdeen 10/08/2020
 

*** Note ***

 

Application of Triton Knoll Wind Farm Safety Zones During Construction

The Secretary of State has granted the Application of Safety Zones on the Triton Knoll Wind Farm Project as follows:

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

 

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.

 

Buoy

Structure

Latitude

Longitude

Individual Specification

TK01

South Cardinal

53°24.054'N

000°57.935'E

Pillar shaped with a south cardinal shaped top mark, exhibiting a Q (6) + L Fl 15s light character (5 nm nominal light range)  RECOVERED

TK02

Special Mark

53°24.568'N

000°54.433'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range)

TK03

Special Mark

53°26.132'N

000°50.008'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range)

TK04

Special Mark

53°27.457'N

000°45.927'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range)

TK05

South Cardinal

53°28.859'N

000°41.181'E

Pillar shaped with a south cardinal shaped top mark, exhibiting a VQ (6) + L Fl 10s light character (5 nm nominal light range)   RECOVERED

TK06

Special Mark

53°30.807'N

000°41.826'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range)

TK07

North Cardinal

53°32.196'N

000°44.248'E

Pillar shaped with a north cardinal shaped top mark, exhibiting a Very Quick (VQ) light character (5 nm nominal light range)

TK08

Special Mark

53°32.444'N

000°47.678'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range

TK09

North Cardinal

53°32.428'N

000°52.040'E

Pillar shaped with a north cardinal shaped top mark, exhibiting a Q light character (5 nm nominal light range)

TK10

Special Mark

53°29.595'N

000°55.306'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5 second (s) light character (5 nm nominal light range)

TK11

Special Mark

53°26.979'N

000°57.974'E

Pillar shaped with a yellow ‘x’ shaped top mark, exhibiting a Fl Y 5s light character (5 nm nominal light range)

TK12

East Cardinal

53°24.368'N

001°00.228'E

Pillar shaped with an east cardinal shaped top mark, exhibiting a Q (3) 10s light character (5nm nominal light range)

TK13

Metocean Buoy

53°26.002'N

000°55.091'E

Triaxys metocean wave and current buoy (South) exhibiting a Fl (5) Y 20s light character (3 nm nominal light range)

TK14

Metocean Buoy

53°30.581'N

000°47.944'E

Triaxys metocean wave and current buoy (North) exhibiting a Fl (5) Y 20s light character (3 nm nominal light range)

 

Notice to Mariners Currently in Force

007/2020 & 013/2020

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Relocated Unexploded Ordnance - Neart na Gaoithe Offshore Wind Farm



Following unsuccessful clearance activities at some of the confirmed Unexploded Ordnance (UXO) items, six UXOs have been relocated to date within the Neart na Gaoithe (NnG) Offshore Wind Farm and Export Cable Corridor.


These UXO items either do not contain a fuse or are confirmed as solid shots and clearance by detonation is not likely to be possible. As such, relocation of the item is necessary. The item will be relocated to a position outwith the construction areas, but within the boundaries of the NnG licensed area, as permitted by the Marine Licence.

 

Latitude Longitude Target
56°14.752’N 02°18.472’W G_MAG_0029
56°14.760’N 02°18.474’W G_MAG_0010
56°14.154’N 02°14.886’W E_MAG_0683
56°13.677’N 02°18.681’W ERC_O_MAG_0332_A
56°14.955’N 02°17.445’W E_MAG_0068
56°14.953’N 02°17.437’W E_MAG_0070
56°14.607’N 02°17.618’W E_MAG_0036
56°15.399’N 02°19.521’W G_MAG_0109
56°14.766'N 02°17.025’W E_MAG_0227
56°14.131’N 02°18.011’W E_MAG_0008
56°14.568’N 02°18.617’W E_MAG_0018
56°15.875’N 02°14.986’W C_MAG_0070
56°13.739’N 02°18.685’W ECR_O_MAG_0362_A
56°13.784’N 02°18.671’W ECR_O_MAG_0378

 

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Pre-Lay Survey and boulder clearance Operations.(PLGR)



Moray Offshore Windfarm (East)Limited (Moray East) are planning to carry out pre-lay grapnel runs (PLGR) on the determined inter array cable sections in order to clear the cable route ahead of the laying of the export cable(via a different vessel).


Please be aware that by virture of its mode of operation the Voe Vangard will be Restricted in her Ability to Manoevre(RAM) as defined under COLREGs (International Regulations for Preventing Collision at Sea 1972 Rule 3). Masters of vessels are therefore requested to maintain their vessels and gear at a minimum safe distance from the vessel of 500meters when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 18. Futher updates and weekly notice of operations can be accessed in the Moray East Website.Commencing cira 18/08/2020

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Export Cable Installation - Triton Knoll Offshore Wind Farm



Please be advised the vessel Ndurance and associated vessels will be carrying out Cable Installation operations in the Triton Knoll Offshore Wind Farm export cable corridor.


A 1500m clearance zone needs to be maintained around the main vessel. Assisting vessels will be Lingestroom, Dutch Power, Dalby Don.  Operations are expected to commence around 27th May 2020 and take around 72 days.

 

During this period, the cable installation vessel 'Ndurance' and support vessels 'Lingestroom' and 'Dutch Power' will utilise pre-defined areas along the export cable route for temporary storage of anchors as detailed in the following of coordinates.  All wet stored anchors are expected to be visible on the waterline with the support of a buoy arrangement complete with white flashing marker light. Mariners should therefore be advised to avoid entering these areas, and where possible, give the area a wide berth.

 

Mariners are also advised of the presence of a non-energised, exposed subsea power cable end joint, which as been temporarily laid down on the seabed at an approximate water depth of 20 metres LAT and at the following position:

 

Latitude - 53°20.256 N Longitude - 000°37.996 E

 

Guard vessels 'Glomar Arctic' and 'Glomar Advantage' will be employed on the exposed areas of sub-sea cable and requests a 250 metre safety zone. The cable has an outer diameter of approx. 300mm and the area is not marked by any surface markers or buoyage.

 

Near Shore Anderby Creek Wet Stowage 1

Ref:

Latitude:

Longitude:

1

53’ 16.41 N

000’ 20.28 E

2

53’ 16.43 N

000’ 20.55 E

3

53’ 16.28 N

000’ 20.30 E

4

53’ 16.30 N

000’ 20.56 E

 

Offshore Wet Stowage 2

Ref:

Latitude:

Longitude:

1

53’ 18.85 N

000’ 25.90 E

2

53’ 18.80 N

000’ 26.10 E

3

53’ 18.25 N

000’ 25.60 E

4

53’ 18.20 N

000’ 25.80 E

 

Offshore Wet Stowage 3

Ref:

Latitude:

Longitude:

1

53’ 20.56 N

000’ 43.93 E

2

53’ 20.73 N

000’ 43.68 E

3

53’ 21.16 N

000’ 44.48 E

4

53’ 21.00 N

000’ 44.73 E

 

Offshore Wet Stowage 4

Ref:

Latitude:

Longitude:

1

53’ 25.55 N

000’ 50.20 E

2

53’ 25.65 N

000’ 49.91 E

3

53’ 26.23 N

000’ 50.60 E

4

53’ 26.13 N

000’ 50.86 E

 

During operations the Ndurance and associated vessels will be contactable on VHF Ch16. For up to date information, contact the guard vessel 'Sorrento' on marine VHF CH16 and Ch10.

 

Operational vessels and their details are as follows:

 

Vessel Name Vessel Type Call Sign MMSI Number
Ndurance Cable Layer 5BVH3 209851000
Lingestroom Anchor Handler PICW 244016000
Dutch Power Anchor Handler PBTZ 246607000
Dalby Don Support Vessel 2IMX6 235111112

Glomar Arctic

Guard Vessel

HO9083

371278000

Glomar Advance

Guard Vessel

HO5178

370048000

 

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

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Export Cable Installation (Beach) - Hornsea Project Two



Ørsted are continuing construction of the Hornsea Project Two Offshore Wind Farm. Preparatory works for export cable installation at the beach landfall and in the nearshore area have commenced.


Cable installation activities will be ongoing an intermittent at the landfall until 30th September 2020 and will re-commence after 1st April 2021.

 

PROPOSED ACTIVITIES:

Landfall Preparation and Cable Installation Please be advised that export cable installation activities will be commencing at the landfall at Horseshoe Point, Lincolnshire from 20th July 2020 through to 30th September 2020. Works will then re-commence on or after 1st April 2021 until 30th September 2021. Works will be continual and intermittent throughout these periods.

 

The works will involve vehicles and construction activities on the beach down to the low water mark and will also include a beached transport barge, nearshore cable laying vessel and other vessels and anchors and other submerged hazards at high water which will be marked, where required. Note that the vessels will have limited manoeuvrability, some vessels will be operating on anchors, and it is requested that all vessels operating or travelling near the vessels maintain a safe distance (at least 500m) and pass all vessels at minimum speed.

 

Vessels:

 

Vessel Activity

Expected Date of

Mobilisation

Port
Dalby Don Support Vessel / Crew Transfer Ongoing Grimsby (UK)
Coastal Challanger - Call Sign:PBOC Anchor handling tug / pre-lay grapnel run / cable remedial work 24/07/2020

Waalhaven (Rotterdam, Netherlands) for anchor handling scope

Grimsby (UK) for pre-lay grapnel run scope
Flintstone Rock Installation Current Scope Complete Stavanger (Norway)
Ndurance - Call Sign: 5BVH3 Export cable Installation 01/08/2020 Halden (Norway)
NKT Victoria Farshore cable installation 01/09/2020 Karlskrona (Norway)
Noordstroom - Call Sign:PIWC Anchor handling tug 01/08/2020 Waalhaven (Rotterdam, Netherlands)
Lingestroom - Call Sign:PICW Anchor handling tug 01/08/2020 TBC – Waalhaven (Rotterdam, Netherlands)
Viking energy - Call Sign:MEPW5 Anchor handling tug 01/08/2020 Waalhaven (Rotterdam, Netherlands)
Maagd - Call Sign:N/A Transport barge 22/07/2020 Waalhaven (Rotterdam, Netherlands) – will be moored at the cable landfall at Horseshoe Point, Lincolnshire
Boka Falcon Cable installation 20/07/2020 Waalhaven (Rotterdam, Netherlands)
Spirit Cable installation 01/06/2021 TBC
Willem Van Oranje Pre-sweeping / dredging 20/07/2020 TBC
Boka Atlantis Mattress installation TBC TBC
Dina Star Mattress Installation / Cable Remedial works 01/08/2020 TBC
Titan Endeavour - Call Sign:2ELT9 Survey Vessel Ongoing Grimsby (UK)
Ivero Survey Vessel Ongoing Hull (UK)
MHO Grimsby Survey Vessel Ongoing  
Voe Vanguard Survey Vessel Current Scope Complete Grimsby (UK)
MTSL Avocet Support Vessel / Crew Transfer 20/07/2020 Grimsby (UK)
Sleipnir Heavy Lift Vessel (substation installation) 15/09/2020 Tyra SE oil and gas to Hornsea Two
Barentsz Transportation of OSS and RCS Jackets and piles 12/08/2020 Batam, Indonesia
AHT TBC Temporary mooring of the Barentsz for lifting operations TBC TBC
Bubble Curtain tug (TBC) Deployment and operation of RCS bubble curtain (if required) TBC TBC
CTV (TBC) Personnel transfer Sleipnir to Barentsz (if required) TBC TBC

 

 

 

 

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Survey - Blyth Offshore Demonstrator Widn Farm



Post Construction Fish/Shellfish & Trawl Surveys Natural Power will be conducting the following surveys at Blyth Offshore by the vessel Princess Royal Call Sign: 2EYM2. Each survey will take one day to complete from 10th August to 14th August.


Demonstrator wind farm on the proposed dates:

  • Epibenthic beam trawl survey – 10th August 2020
  • Otter trawl survey – 11th August 2020
  • Benthic grab survey- 14th August 2020

The purpose of the survey is to assess the diversity and distribution of the fish population in and around the turbine array.

 

Survey details: Otter Trawl Survey

  • Survey duration will be one day and consist of eight tows in total with duration of thirty minutes each at 3.5 knots. The trawl data will be collected acrosseight sampling stations.

 

Epibenthic Beam Trawl Survey

  • A 2 m steel (‘Jennings’) beam trawl with a 5 mm mesh cod-end will be deployed at the 6 sampling stations. At each sampling station the net will be towed for a distance of 800 m at a speed of 1-1.5 knots (approx.)
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Secondary Works on installed assets - Moray East



Planning to carry out secondary works on the installed jackets (within figure 1 bounded area/Site 1) using the Windcat 17


Please be aware that by virtuue of its mode of operation the Windcat 17 will be restricted in her Ability to Manoeuvre(RAM) as defined under COLREGs (International Regulations for preventing Collisions at Sea 1972,(Rule 3) Masters of vessels are therefore requested to maintain their vessels and gears at a minumum safe distance from the vessel of 500mwhen undertaking work and showing the appropriate shapes and lights in accordance with COLREGs,(Rule18).

 

Further updates and weekly notice of operations can be accesed in the Moray East Website.

 

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Survey - Sofia Offshore Wind Farm



Mariners are advised that Fugro have completed Offshore Site Investigations along the export cable corridor of the Sofia Offshore Wind Farm (SOWF), with only the deployment of metocean equipment expected to be undertaken on or around the 6th August 2020.


Mariners are advised the Curtis Marshall will deploy metocean equipment on or around 6th August 2020, dependent on the prevailing weather conditions and work progress. The equipment will be deployed on the seabed for a period of between 6 to 12 week, with works including interim recovery of the equipment to download data followed by recovery of the equipment at the end of the period.

 

The deployment location will be as follows (WGS_1984_UTM_Zone_31N):

Easting Northing Lat_DD Long_DD Lat_DMS Long_DMS Lat_DDM Long_DDM
241125.96 6058533.70 54.608 -1.009 54 36 27.963N 001 00 32.296W 54 36.466N 001 00.538W

 

The equipment comprises a seabed frame (housing an acoustic wave and current profiler), which is connected to an anchor weight via a combination wire groundline. The method of recovery involved the release of pop-up systems mounted on the seabed frame and anchor weight, therefore there is no surface marker buoy on site. The deployed equipment will not be marked on the surface.

 

For further information:  Sally Dalrymple, Fugro, Tel: +44 7917 058751, email: s.dalrymple@fugro.com;

Nigel Proctor (FLO) Precision Marine Survey Ltd Tel: +44 7702 730891, email n.proctor@precisionmarine.co.uk

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Subsea Object Removal / Relocation - Rampion OWF



Activities are to include pre and post works survey (Marshall Art). Subsea objects to be recovered and disposed of within the Rampion OWF using ROV and / or Diving operations (Pacific Worker)


James Fisher Marine Services (JFMS) would like to inform mariners that Object Recovery and Disposal Works are due to commence on 17th July within the Rampion OWF and Export Cable Route (ECR) Areas. These works involve; Removal and Disposal of Subsea Rock Bags, Recovery of Met Buoy Mooring System and Cut, Recovery and Stabilisation of 18m of redundant Export Cable by Remotely Operated Vehicle (ROV) and potential divers.

 

It is requested that all vessels operating within these areas keep their distance, maintain the stipulated exclusion zones (below) and pass at minimum speed to reduce vessel wash.

 

Vessel Operations will be conducted on a 24-hour basis.

 

Pacific Worker - Call Sign LAGI7

 

Please be advised that the vessel Pacific Worker will be carrying out the Removal and Disposal of Subsea Rock Bags (adjacent to OSP), Recovery of Met Buoy Mooring System and Cut, Recovery and Stabilisation of 18m of redundant Export Cable at the Rampion Offshore Wind Farm site.

 

Vessel Exclusion Zones

Vessels are requested to maintain a minimum of 500m stand off during the above works. A 500m exclusion zone is requested.  

 

 

The vessels can be contacted on VHF channel 16 throughout the works for any further information.

 

A Fisheries Liaison Officer will be on board the Pacific Worker throughout its duration

 

Marshall Art - Call Sign 2EMY5

Please be advised that the vessel Marshall Art will be carrying out pre and post works surveys. The vessel will be mobilised with a multibeam echo sounder (MBES) and side scan sonar (SSS), as well as the requisite positioning equipment.

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Triton Knoll OWF - Demarcation Buoy TK07 Light Not Working



Mariners are advised that the north cardinal buoy (Demarcation Buoy TK07) deployed at the Trition Knoll OWF turbine array is currently no longer illuminated during the hours of darkness.


The guard vessel 'Sorrento' will remain in the vicinity of TK07 demarcation marker and carry out regular broadcasts informing all vessels of the unlit demarcation buoy.

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Export Cable Survey and Inspection - Greater Gabbard OWF



Subsea Survey & Inspection activities will commence on 10th August within the Greater Gabbard OWF, Export Cable Route and Interconnector Areas. These works involve geophysical survey and ROV Inspections from the 2 x Offshore Sub stations to the land.


James Fisher Marine Services (JFMS) would like to inform mariners that subsea Survey & Inspection activities are due to commence on 10th August within the Greater Gabbard OWF, Export Cable Route (ECR) and Interconnector Areas. These works involve geophysical survey and ROV Inspections from the 2 x Offshore Sub stations to the land tie in; detailed inspections shall be undertaken at specified KP points listed in the Notice to Mariners. Schedule for planned works as follows: Start Date: 10th August – Survey vessel Pacific Worker.

 

Start Date: 20th August – Survey vessel Fast Fisher Durations: Approximately 2 Weeks which includes mobilisation and demobilisation of project equipment on to support vessels. Projected finish dates approximately 23rd August 2020  

 

Structures:

Point Location
Inner Gabbard OSP (IGSUB) 51°54.846'N 1°56.606'W
Galloper OSP (GASUB) 51°47.189'N 1°57.473'W

 

Cables:

Cable Location Start End
L1 KP 4.037–4.048 52°12.262'N 01°40.033'E 52°12.261'N 01°40.042'E
L1 KP 4.073–4.075 52°12.261'N 01°40.064'E 52°12.261'N 01°40.066'E
L1 KP 4.082–4.093 52°12.261'N 01°40.072'E 52°12.261'N 01°40.082'E
L2 KP 3.867–3.872 52°12.254'N 01°39.933'E 52°12.254'N 01°39.938'E
L2 KP 40.055–4.07 52°12.221'N 01°40.089'E 52°12.218'N 01°40.101'E
L2 KP 4.085–4.114 52°12.215'N 01°40.113'E 52°12.209'N 01°40.137'E
L2 KP 35.381–35.395 51°59.659'N 01°55.870'E 51°59.658'N 01°55.882'E
L2 KP 35.989–36.024 51°59.639'N 01°56.307'E 51°59.627'N 01°56.330'E
L3 KP 3.63–3.667 52°12.220'N 01°39.731'E 52°12.213'N 01°39.762'E
L3 KP 4.053–4.059 52°12.158'N 01°40.088'E 52°12.157'N 01°40.093'E
L3 KP 4.097–4.111 52°12.151'N 01°40.125'E 52°12.149'N 01°40.137'E
L3 KP 4.171–4.179 52°12.140'N 01°40.187'E 52°12.139'N 01°40.194'E
L3 KP 37.931–37.964 51°58.997'N 01°57.222'E 51°58.980'N 01°57.229'E

 

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MeyGen Tidal Array Site - Pentland Firth Inner Sound



Subsea are to be conducted at the MeyGen Tidal Array site. Works to be conducted between 11th to 15th August 2020. The vessel the Normand Cutter may be encountered anywhere within the Inner Sound.


Vessels involved in operations will be Restricted in their Ability to Manoeuvre (RAM) and will display the appropriate shapes and lights during the operations. This Navigation Warning expires 20th August 2020.

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Survey - East Anglia HUB Offshore Wind Farm



Scottish Power Renewables (SPR) has contracted Fugro GM Marine Limited (Fugro) to carry out a geophysical and geotechnical site investigation located east of Lowestoft, in the southern North for the proposed East Anglia HUB offshore windfarm site.


The East Anglia HUB offshore windfarm site is split onto three zones: East Anglia ONE North (EA1N); East Anglia TWO (EA2); and East Anglia THREE (EA3). Initially, Fugro will be operating across EA1N and EA2 in parallel.

 

This Notice to Mariners will be updated and reissued periodically as additional vessel are planned to come on site. For operations in 2020, current planning indicates a total of 6 vessels being on site between the period 9th July 2020 and 16th October 2020. It should be noted these dates are subject to change and the total number of vessels could increase.

 

Vessel Call Sign Area Dates
Fugro Frontier C6BH4 EA1N - OWF & ECC 31/07/20
Atlantis Dweller C6DX8 EA1N - OWF & ECC 24/08/20
Fugro Pioneer C6BH3 EA1N - OWF & ECC 09/09/20
Normand Flower LAXN7 EA1N - OWF & ECC 20/08/20
Despina LAKW7 EA1N - OWF & ECC 14/08/20
Despina LAKW7 EA2 - OWF & ECC 30/07/20
Fugro Frontier C6BH4 EA2 - OWF & ECC 11/07/20
Atlantis Dweller C6DX8 EA2 - OWF & ECC 09/07/20
Fugro Pioneer C6BH3 EA2 - OWF & ECC 11/08/20
Normand Flower LAXN7 EA2 - OWF & ECC 22/07/20

 

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Survey - Planned Cable Route English Channel



EGS (International) Ltd will be performing geophysical surveys of a planned cable route across the English Channel, using offshore survey vessel 'Coastal Enterprise' Call Sign: PHCG & nearshore ‘EGS Echo’ Call Sign: MERD8 from the 1st August 2020.


Nearshore Vessel: EGS Echo Call Sign:MERD8

The survey areas are in the shallows at each end of the route and are likely to be conducted over a 30-35 day period. The French section will be surveyed first and is scheduled to start around 1st August, for approximately 10 to 14 days. Following this the vessel will transit to the English side and perform this survey from around 15th August, also for approximately 10 to 14 days. The vessel will be operating on a 12-hour watch basis (daylight hours) and will display appropriate day shapes and lights during survey operations, maintaining a listening watch VHF CH16, with AIS transmission. The homeports will be Dieppe and Brighton Marina.

The survey equipment will include subsea towed systems and the vessel will be surveying at a speed of approximately 3-4 knots. EGS Echo will be steering along defined line plans, up and down blocks along the route, so please exercise caution around the vessel as significant course changes are likely. Echo will also be using high waters to extent the survey up each beach area.

The initial survey corridor is 500m along the route and then this will be repeated, but with a corridor width of 50m (UXO survey).

 

 

Offshore Vessel: Coastal Enterprise' Call Sign: PHCG 

The survey areas are in the shallows at each end of the route and are likely to be conducted over a 30-35 day period. The French section will be surveyed first and is scheduled to start around 1st August, for approximately 10 to 14 days. Following this the vessel will transit to the English side and perform this survey from around 15th August, also for approximately 10 to 14 days. The vessel will be operating on a 12-hour watch basis (daylight hours) and will display appropriate day shapes and lights during survey operations, maintaining a listening watch VHF CH16, with AIS transmission. The homeports will be Dieppe and Brighton Marina.

The survey equipment will include subsea towed systems and the vessel will be surveying at a speed of approximately 3-4 knots. EGS Echo will be steering along defined line plans, up and down blocks along the route, so please exercise caution around the vessel as significant course changes are likely. Echo will also be using high waters to extent the survey up each beach area.

The initial survey corridor is 500m along the route and then this will be repeated, but with a corridor width of 50m (UXO survey).

 

 

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Sheringham and Dudgeon Offshore Wind Farm Extension 2020



An ecological survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm, on the North Norfolk coast. The survey will start between the 4 and 10 August 2020 and will continue for approximately 10 days.


An ecological survey will be conducted on the proposed Sheringham Shoal and Dudgeon Extension offshore windfarm and the existing Sheringham Shoal Offshore wind farm export cable route on the North Norfolk coast. The survey will start between the 4 and 10 August 2020 and will continue for approximately 10 days.

 

Survey operations shall be conducted for Equinor. The survey will involve the vessel DSV Curtis Marshall, call sign 2HWN3, conducting an ecological survey using a benthic grab sampler and a drop down video camera.

 

The vessel will be operating on a 24 hour basis. Throughout survey operations, the vessel will be displaying the appropriate lights and shapes as required under the COLREGS Rule 27 and will require other vessels to maintain a wide berth.

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Survey - Berwick Bank Wind Farm and Marr Bank Wind Farm



SSE Renewables will be returning to Berwick Bank Wind Farm and Marr Bank Wind Farm (formerly Seagreen 2 & Seagreen 3 respectively) areas to undertake a Geotechnical survey of the area. Conducted by Despina Call Sign:LAKW7 & Omalius Call Sign:ORRS.


The survey work is being undertaken by Fugro and G-tec and will be conducted from the Despina Call Sign:LAKW7 & Omalius Call Sign: ORRS vessels respectively. The scouting/guard vessel will be the Morning Dawn Call Sign: MHEU3.

 

Survey Duration The surveys initially mobilised on the 19th June 2020. The expected completion of the geotechnical surveys will be by end of September 2020, weather permitting, and therefore there may be the  potential for an extension to the work duration.

Survey Tasks The survey is to be split into 2 distinct phases using the offshore survey vessels:

 

  1. Berwick Bank and Marr Bank borehole survey beginning July (approx. 24th July 2020) will be undertaken by the Omalius and will likely take 60 days to complete.
  2. Berwick Bank and Marr Bank CPT survey beginning the 19th June will be undertaken by the Despina and will likely take 20 days to complete (NOTE: This has now completed)

Additionally, the Morning Dawn has been on location from the 17th June 2020.

During the survey campaign, the vessels will be deploying underwater equipment in order to gather cores and also assess the geology in the area. As a consequence of equipment being deployed and the modes of operation, all mariners are advised to keep a safe clearance distance of no less than 500m from the vessels.

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Survey - Dogger Bank



MMT will undertake a geophysical survey in UK Dogger Bank, UK exclusive economic zone (EEZ). The works will be undertaken within the Dogger Bank A and Dogger Bank B project areas, along with the export cable corridor from land out to both these areas.


A detailed survey is being carried out along several corridors within the survey area. Equipment deployed: hull mounted Multibeam sonar and towed equipment up to 300 m behind the vessel consisting of Side scan sonar and multiple Magnetometers within a ROTV frame within 5 m of the seabed. When underwater survey equipment is deployed, the survey vessels may have restricted ability to manoeuvre and other vessels are requested to pass at a safe speed and distance (at least 500 m).

The offshore survey programme commenced on the 23rd June 2020 in Dogger Bank A utilising the vessel Franklin Call Sign: OZ2102. Survey operations in Dogger Bank A and B are expected to be completed on 25th of July. After that, survey will take place along the export routes moving from east to west and end on 12th of August (subject to extension if the weather becomes poor). As a contingency, Franklin might work in Block 03 ahead of time if the weather becomes poor in the bank area but only after carefully scouting for fishing gear first.

The next phase of the offshore survey work is UXO survey in selected areas within the boundaries of the current geophysical survey – further details and timeline for this phase will follow in a revised NTM.

Nearshore works along the export cable corridor (inside of the 15m contour) are expected to commence on 20th July and end on the 26th of August (subject to extension if the weather becomes poor).

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Survey - Western Isles Cable Inspections (Northern Element)



Briggs Marine Contractors (on behalf of SHEPD) will be undertaking hydrographic surveys to a number of subsea electricity cables within a 1km wide corridor.


The work will utilise an inshore survey vessel, Athenia 2EUE2 and an Unmanned Service Vehicle (USV) Harry MBIY3, for the operations.

 

The survey work will be concentrated within the cable route corridor. These coordinates are also specified in the Marine Licences held with Marine Scotland.

 

USV Harry survey dates are expected to commence on the 1st August 2020 , and are expected to continue over a planned period of 14 days, weather permitting.

Inshore vessel Athenia survey dates are expected to commence on the 15th August 2020 , and are expected to continue over a planned period of 14 days, weather permitting.

 

Work Description 

The Athenia near shore survey vessel and Harry USV will operate in waters shallower than 30m, between all landfalls

 

During operations both vessels will be restricted in their ability to manoeuvre. The Athenia will be operating a remotely operated vehicle (ROV) and the USV Harry will be operating hull mounted SSS and MBES equipment.

Survey work undertaken will be conducted during daylight hours and the vessels will return to port overnight.

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

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

 

 

Primary Survey Equipment

 

Primary Equipment

Towed / Hull

mounted / Sampling

Approx tow

length (if applicable)

Vessel
ROV & Cable Tracker ROV mounted

N/A

Athenia - 2EUE2

Sidescan Sonar /

Multibeam echosounder

Hull mounted

N/A

Harry - MBIY3

 

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Exposed Subsea Cable - Apollo South



On behalf of Apollo SCS Ltd, fishermen are advised that following a repair to the Apollo South subsea telecoms cable there now exists a section of exposed/unburied cable.


Due to the nature of the seabed in this area the cable may be exposed and could be a hazard to fishing. Fishermen are asked to ensure that they have the route of the Apollo South cable accurately plotted on their fishing charts. Trawler skippers are respectfully asked to exercise caution when trawling in the vicinity of the Apollo South cable and to keep beyond a distance of at least 500 metres from the charted cable route and, where at all possible, to avoid trawling directly over the cable route. Static gear fishermen are advised not to deploy anchors and end weights in close proximity to the cable.

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Survey - Cable Route Celtic Sea



EGS (Asia) Ltd will be performing a geophysical survey of a planned cable route across within the Celtic Sea, using offshore survey vessel ‘RV Ridley Thomas’ Call Sign: V7JK2 from late July until Early September 2020


Please be advised that Survey Vessel Ridley Thomas will be conducting telecommunication cable survey activities for a transatlantic undersea fiber optic communications cable within the Celtic Sea, due west of Cornwall from late July to early September, 2020.

 

We kindly request that ships and fishing vessels keep a distance of at least 1 nm from the hydrographic Survey vessel that will be towing a side scan sonar.   We also kindly request that any set or drift gear, such as longlines, gillnets, and pots/traps be moved off the route by a distance of 1/2 nm on either side at the locations and during these periods noted above above in order to avoid gear entanglement.

 

The work will include towed sonar survey and bottom sampling and will be performed 24/7. The cable route survey operations include the stern deployment of a sonar towfish tethered with steel cable at varying water depths to collect geophysical/bathymetric mapping data for a proposed undersea telecommunications cable. Towfish towing wire layback will be 3x water depth behind the vessel stern. The maximum depth of tow operations will by 1000 metres. The sonar sensor will be towed approximately 20-40 metres from the seafloor. The survey corridor is 1000 metres centered on the survey centerline. Operations in water depths greater than 1000 metres will utilize hull mounted.equipment only.

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Construction of Wind Farm (Neart na Gaoithe)



Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) will commence construction work for Neart na Gaoithe (NnG) Offshore Wind Farm, from the 9th August 2020, with the start of casing and pile installation operations on the wind farm site.


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:

 

Name Location

SP 1 - Special Mark - Fl Y 5s light character

56°18.180'N 02°12.075'W

SP 2 - Special Mark - Fl Y 5s light character

56°15.643'N 02°09.329'W

SP 3 - Special Mark - Fl Y 5s light character

56°12.294'N 02°15.796'W

SP 4 - Special Mark - Fl Y 5s light character

56°14.038'N 02°18.975'W

SP 5 - Special Mark - Fl Y 5s light character

56°18.924'N 02°18.951'W

 

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

 

Name Location

NNG - North Cardinal - Quick (Q) white light character

56°20.425'N 02°14.617'W

NNG - East Cardinal - Q (3) 10 s white light character

56°14.329'N 02°08.558'W

NNG - South Cardinal - Q (6) + Long (L) FL 15 s white light character

56°12.294'N 02°09.760'W

NNG - West Cardinal - Q (9) 15 s white light character

56°17.057'N 02°21.084'W

 

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.

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Area 515/2 Plough Trials



Boskalis Subsea are to trial a new cable laying plough device in Marine Aggregate Area 515/2


Mariners are advised of the activity in Marine Aggregate Area 515/2, where a new plough device will be tested in various locations throughout the Licence Area. In addition, throughout the trial period, bathymetric surveys will be carried out regulary in support of the trial activities. Mariners should keep a safe distance away from all vessels carrying out the works. 

 

The following vessels will be used for the trial works.

Vessel Name

Type

Call Sign

MMSI

IMO

Commence Date

Boka Falcon Anchor Handling Tug

ORTD

205787000 9448401 23/07/2020
Ivero Survey Vessel MCJ03 232013165 8108377 23/07/2020
MTSL Avocet Crew Transfer Vessel 2DXB6 235082698 9609603 23/07/2020

 

The following vessel may be used as back up to the vessel MTSL Avocet.

Vessel Name

Type

Call Sign

MMSI

IMO

Commence Date

Dalby Don 

Crew Transfer Vessel

2IMZ6

235111112

-

 

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Subsea Tidal Array - Bluemull Sound (Shetland)



Operation is to conduct work on a subsea tidal energy array in the Bluemull Sound, Shetland using vessel MV C-Odyssey Call Sign: 2ETW7 from August until October 2020.


A multicat vessel the Leask Marine MV C-Odyssey (pictured below, call sign 2ETW7) or a similar vessel will conduct offshore and subsea operations. Works will include loading and preparatory work at Cullivoe Pier and Belmont Pier. The work will be conducted over the months of August, September and October 2020. Operations could take place during the day or at night.

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Submarine Cable - Pentland Firth East



Global Offshore and their subcontractors (on behalf of SHEPD) will be undertaking marine construction activities across the Pentland Firth for a new submarine electricity cable. Construction commenced on 13th July and complete on the 1st of September.


Removal of fishing gear +/- 250 m from the provided Route Co-Ordinates is requested during the Marine Construction works in order to prevent damage to any fishing gear and to the construction equipment being used.

 

The Marine Construction activities are due to commence on the 13th of July and complete on the 1st of September 2020.

 

Dates Operations Vessel(s) Call Sign
13 July - 15 July Pre Lay Survey Normand Clipper LAXJ7
15 July - 17 July Cable Crossing Construction Normand Clipper LAXJ7
17 July - 15 August Cable Installation Operations

Normand Clipper

MV Uskmoor

Delta 9151

Celtic Guardian

Celtic Trader

Speedbird One

Fusion 490

LAXJ7

MDEF2

MCVE3

-

-

2HWN7

-

21 July - 01 Sept Rock Bag Installation Skandi Carla (TBC) C6RX4
21 July - 01 Sept Cable Burial Operations Global Symphony C6YY3
21 July - 01 Sept Split Pipe Installation MV Uskmoor MDEF2

 

Ultra Short Baseline (USBL) positioning will be used for the duration of the works across the Pentland Firth. Multi-Beam Echo Sounder (MBES), Pipetracker (TSS), Side Scan Sonar (SSS) technology will also be in use during the construction works.

 

 

Construction Works Description The construction activities will result in a new submarine cable linking the Scottish mainland to the island of Hoy. The stages of the construction are listed below:

  • Pre-Lay Survey Works
  • Crossing Construction
  • Cable Installation
  • Rock Bag Installation for Stabilisation
  • Cable Burial for Protection and Stabilisation
  • Split Pipe Installation for Protection and Stabilisation

Construction Vessel lights and shapes will be displayed at all times. Other vessels should maintain an appropriate and safe distance of 500 m when passing the construction vessels whilst undertaking operations and should pass at the lowest possible speed to avoid vessel wash effects. The vessel will be working 24 hour operations. The vessel(s) will also monitor VHF Channels 16 and 12.

Equipment calibration operations may take place out with the defined corridor and these areas will be chosen so as not to interfere with fishing/shipping activity.

 

 

 

 

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Lidar Deployment - East Anglia Two Wind Farm



SeaWatch LiDAR Buoy (SWLB) has now been deployed at the East Anglia TWO wind farm site. The SWLB is a sea state measurement instrument. The deployment location is within the UK Sector of the North Sea off the coast of East Suffolk and Essex.


The equipment is deployed within the East Anglia TWO wind farm array limits and will be deployed for approximately twelve months from July 2020.

The equipment was deployed by the vessel Severn Supporter on 11 July 2020. Scheduled maintenance is planned in the autumn/winter of 2020, from October onwards. Unforeseen maintenance may also be required.

The mooring design is specific to each SWLB deployment and location. The equipment is moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.

 

The equipment is an integrated Seawatch Wavescan buoy and ZX 300M LiDAR; the purpose of the equipment is to collect oceanographic and meteorological data using a single platform. The equipment is supplied and charged by an onboard power system which uses methanol fuel cells and solar panels to recharge onboard lead acid batteries.

 

In order to minimise the risk to other sea users, the measures listed below will be adopted for this deployment: The equipment will be equipped with a F1 (5) Y 20s light with 4-5 nautical mile range; the light will be mounted at the top of one of the masts, approximately 4 m above sea level.

 

Additional risk reduction measures include the use of passive radar reflectors to make the buoy more visible on vessel radars, Automatic Information Systems (AIS) to broadcast the buoy position to marine AIS platforms, Global Positioning Systems (GPS) position monitoring of the buoy at 30-minute intervals and an independent GPS tracker used for backup position monitoring of the equipment in the event of primary GPS failure.

The equipment will be moored using a single point mooring. The mooring design will allow for free movement of the buoy over a radius that is approximately equal to the water depth. The anchor weight used to moor the equipment will be approximately 2000 kg weight in water and comprised of large diameter scrap chain.

It should be noted that some elements of the mooring will float just below the sea surface. To avoid the risk of entanglement, vessels should allow a minimum 200 m clearance from the surface buoy

 

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Survey - Rampion 2 Offshore Wind Farm Development



Survey vessels, MV Titan Discovery Call Sign: 2HCR3 & MV Vigilant Call Sign: MCJN5C, will be conducting early stage geophysical survey within an area of search identified for a potential Rampion 2 OWF development, off the coast of Sussex.


Scope of Work: MV Titan Discovery Call Sign: 2HCR3

Mariners are advised that the survey vessel, MV Titan Discovery, will be conducting early stage nearshore geophysical surveys within the Export Cable corridor of search identified for a potential Rampion 2 OWF development, off the coast of Sussex.

The MV Titan Discovery is tasked with collecting data from the shore to the hand over location with the offshore vessel (MV Vigilant). The MV Titan Discovery will be displaying the relevant IRPCS day shapes and night lights for vessels restricted in their ability to manoeuvre.

MV Titan Discovery will be operating vessel mounted and towed survey gear (Up to 100m behind the vessel) and a safe operating distance is always requested around the vessel.

 

Scope of Work: MV Vigilant Call Sign: MCJN5C

Mariners are advised that the survey vessel, MV Vigilant, will be conducting early stage geophysical survey within an area of search identified for a potential Rampion 2 OWF development, off the coast of Sussex.

MV Vigilant is tasked with collecting data in the main site Area A and Area B adjacent to the existing Rampion Offshore Wind Farm and also in the Export Cable corridor of search (in water depths greater than 15m)

In addition to MV Vigilant, MV Titan Discovery will be working on the inshore area of the Export Cable corridor of search, and MV Ivero will be working in the main site in August. MV Vigilant will be displaying the relevant IRPCS day shapes and night lights for vessels restricted in their ability to manoeuvre. MV Vigilant will be operating vessel mounted and towed survey gear (Up to 300m behind the vessel) and a safe operating distance is always requested around the vessel.

 

 

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Subsea power cable - laying and trenching operations



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence (x3 export routes – wind farm to landfall) cable laying and trenching operations (two separate vessels) circa 27th July 2020


Vessel “NKT Victoria” will be laying the subsea power cables; three export cables between the Moray East offshore wind farm site and the cable landfall (via three separate drilled HDD ducts near Boyndie Bay). Vessel “Havila Phoenix” will be undertaking operations to bury these three subsea power cables below the seabed, via means of remotely operated trenching vehicles. Cable laying is expected to be completed by circa 3rd October 2020. Cable trenching is expected to be ongoing until early November but will be followed by a separate campaign to install remedial protection over the cables on any remaining unburied/unprotected sections. Details on remedial campaign(s) will be provided nearer the time of execution. The above dates include some weather contingency, however the operations may be subject to further extension.

 

Please be aware that by virtue of its mode of operation the NKT Victoria and Havila Phoenix will be Restricted in their Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 18. Further updates and Weekly notice of operations can be accessed in the Moray East Website

 

https://www.morayeast.com/current-works/offshore-works

 

Note: Cable Trenching and Lay Activities Exclusion Zone area coordinates are being reviewed

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Diving Campaign near Boyndie Bay



As part of the three export power cable installations for Moray East Offshore Wind Farm, Moray East and their contractor NKT intend to undertake diving works near Boyndie Bay


The above mentioned works includes the preparation works on the HDD duct (offshore) exit, cable installation support works, and post-cable installation grouting and finishing works for the project. Work on the duct and surrounding area will be undertaken by divers connected to diving support vessel “MV C-Fenna” operated by Leask Marine. During diving operations this vessel will be positioned via a four-point anchor mooring spread. Also active during this time will be a crew transfer vessel assisting operations, and transferring personnel will be the MV “C-Spartan”, also operated by Leask Marine. For diving vessel moorings, for the avoidance of any fishing gear or buoyed items posing risk of wire entanglement based on anchor positions, these are marked on the drawing below. Moray East intends to commence diving preparation works on the 6 th of July 2020, for the duct preparation works, and continue diving works on all three cables for installation support, and postinstallation grouting and finishing works. This diving campaign is expected to reach completion circa 18th October 2020. The above dates include some estimated/expected weather delays, however, this activity may be subject to further extension of works.

 

Please be aware that by virtue of its mode of operation the C-Fenna and C-Spartan will be Restricted in their Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 18. Further updates and Weekly notice of operations can be accessed in the Moray East Website

 

https://www.morayeast.com/current-works/offshore-works

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Floating LiDAR System - Seagreen Wind Energy



Seagreen Wind Energy Limited has replaced the Floating LiDAR System (FLS) at the location shown


The replacement FLS was deployed on the boundary of the Seagreen Alpha and Seagreen Bravo offshore wind farms in the Firth of Forth Offshore Wind Round 3 Zone off the east coast of Scotland. The replacement FLS is approximately 600m to the south-west of the previous location.

 

The FLS buoy will remain deployed for up to 1 additional year from this date. Service visits will occur at approximately 3-month intervals over this period.

 

The FLS is buoy mounted and is moored using 150 m long DIN 5683-II mooring chain Ø26 x 234 mm and 3 tonne concrete anchor. The buoy is powered by solar panels and micro wind turbine generators. The buoy is yellow (RAL 1023) in colour and will be clearly marked with two navigation lights (flashing amber, 5 flashes every 20 seconds, nominal range 3-6 nm visibility). The buoy is fitted with a Radar reflector. A service vessel will be on station for approximately four hours during service and recovery visits. Other vessels should maintain a safe distance when passing the vessel and should pass at lowest possible speed to avoid vessel wash effects.

 

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Clump Weight - Triton Knoll Offshore Windfarm



A 500kg clump weight made from scrapped anchor chains has been dropped


Dimensions of object:

  • Various lengths of anchor chain (max 1.3mtr)
  • Held together by steel sling and shackles
  • Total mass ±500kg
  • Connected is a white polyprop line - ± 25-30mtr in length with sinker at end.
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Nearshore Duct Preparation Scope - Triton Knoll Offshore Wind Farm



Boskalis and Triton Knoll would like to inform mariners that the Triton Knoll Offshore Wind Farm – Nearshore Duct Preparations in the Triton Knoll Offshore Windfarm Project Area.


The Voe Vanguard will be carrying out Nearshore Duct Preparations Works at the Triton Knoll OWF development for approximately

2 weeks, with works due to commence on or around the 14th May 2020.  The Support Vessel 'CRC Voyager' will commute to and from the works area, from Grimsby.

 

During operations, the Voe Vanguard can be contacted on VHF channel 16 throughout.

 

A 500 metre clearance should be maintained around the following works vessels.

 

Main Vessel: Voe Vanguard - MBEN9

Support Vessel: CRC Voyager -  MBZZ7

 

For further project information, please contact Lee Cornwell (Triton Knoll Offshore Wind Farm); Tel: +44 (0) 7384 807293; Email: l.cornwell@tritonknoll.co.uk

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Surveys - Norfolk Vanguard & Norfolk Boreas Windfarms



MMT have been contracted by Vattenfall Windpower Ltd to perform survey for the planned transmission assets linking the Norfolk Vanguard (NV) and Norfolk Boreas (NB) windfarm areas to shore.


Project Description and Survey tasks

During this survey the vessel will be deploying underwater survey equipment. During such times the survey vessels may have restricted ability to manoeuvre and other vessels are requested to pass at a safe speed and distance (at least 500 m). The vessels will monitor VHF Channel 16 at all times.

 

Geophysical survey with towed equipment will be performed along export cables and at Offshore Sub Stations (OSS). Equipment to be used: singlebeam echosounder (SBES), multibeam echosounder (MBES), side scan sonar (SSS), magnetometer (MAG) and sub bottom profiler (SBP). The scope will also include an environmental survey to map the presence of Sabellaria in the Haisborough, Hammond and Winterton (HHW) Special Area of Conservation (SAC). This shall also entail geophysical surveys using singlebeam echosounder (SBES), multibeam echosounder (MBES), side scan sonar (SSS) within the HHW SAC area, additionally targeted sediment sampling and/or environmental mapping using a Drop Down Video system at yet to be determined positions will be completed.

 

Timeline

Survey works will commence on the 2nd June and is scheduled to end at the 14th August (subject to change, ultimately dependent on the weather situation). Survey works will initially be carried out in blocks 1 and 2 and then move to blocks 3 and 4 on the 6th of June and then continue from west to east for the remainder of the period. Nearshore survey is scheduled to commence on the 28th of June and end in the end of June.

 

Fisheries Liaison

A shore based Fisheries Liaison Officer (FLO) will be available during the course of the project – details below.

With regards to nearshore activity (inside B04), there will be an offshore Fisheries Liasion Officer on the SeaPal who can be contacted via the vessel detail below.

 

Vessels

Offshore survey work will be carried out using survey vessel M/V Relume. Nearshore survey work will be carried out using Deep Locus and Deep Jenny.

Vessel: Relume

Call Sign: C6TR4

IMO: 9280720.

GSM: +44 2037691766

Email: om-relume@mmt.se; relume_master@relume-mmsl.com

 

Vessel: Deep Locus

Call Sign: 2BMQ7

MMSI: 235067494

GSM: +31(0) 6-41921124

Email: BMO@deepbv.nl

 

Vessel: Deep Jenny

Call sign: PC2769

MMSI: 244860387

GSM: +31 206343676

Email: BMO@deepbv.nl

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Moray West Floating LiDAR Buoy



Operational Floating LiDAR Buoy (and mooring system)


Equipment

Location

Floating LiDAR Buoy (including Clump Weight and Mooring Chain)

58°5.381'N  3°0.877'W

 

For further information contact: Guillermo Tornero De Diego (Technical Operations), guillermo.tornero@edpr.com, +44 (0) 7741 625376.  Tony Blackshaw (QHSSE), Tony.Blackshaw@moraywest.com, +44 (0) 7443 638253.  Sarah Edwards (Development & Commercial Fisheries), sarah.edwards@edpr.com, +44 (0) 7741 140150.

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Jacket Installation - Moray Offshore Wind Farm



Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence Jacket installation (subject to receipt of required regulatory approvals) on all of the pre piled areas using the vessel 'Seajacks Scylla' circa 27/06/2020 until further notice.


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to commence Jacket installation (subject to receipt of required regulatory approvals) on all of the pre piled areas (shown in figure 1) using Seajacks Scylla circa 27/06/2020 until further notice. Once the Jackets have been installed the vessel 'Boa Sub C' will be utilised for grouting operations on the newly installed jackets as well as the continuation of the soil plug removal.

 

Please be aware that by virtue of its mode of operation the Seajacks Scylla and Boa Sub C will be Restricted in their Ability to Manoeuvre (RAM) as defined under COLREGs (International Regulations for Preventing Collisions at Sea 1972, Rule 3). Masters of vessels are therefore requested to maintain their vessels and gears at a minimum safe distance from the vessel of 500 metres when it is undertaking work and showing the appropriate shapes and lights in accordance with COLREGs Rule 18. Further updates and Weekly notice of operations can be accessed in the Moray East Website

 

http://www.morayoffshore.com/moray-east/the-project/notices-to-mariners/

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Survey - Awel y Mor Offshore Wind Farm



Awel y Môr Offshore Farm Limited (AyM) has contracted Fugro GB Marine Limited (Fugro) to carry out a geophysical and environmental site investigation in the Irish Sea for the proposed Awel y Môr Offshore Wind Farm (AyMOWF) site.


The Awel y Môr Offshore Wind Farm site is located in the Irish Sea located to the west of the existing Gwynt y Môr Wind Farm, off the north coast of Wales in water depths between 20 m and 40 m Lowest Astronomical Tide

 

Offshore Geophysical Investigation – Array Area The geophysical operations at the AyM site are expected to be carried out from the Fugro Mercator from 15th June 2020 for approximately 5-6 weeks. Also 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 1,000m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash. Survey operations will be conducted on a 24-hour basis.  

 

Offshore Geophysical Investigation – Export Cable Route The geophysical operations on the AyM export cable route from the 10m LAT contour offshore, are expected to be carried out from the Fugro Mercator from approximately 20th July 2020 for approximately 3-4 weeks. 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 1,000m safety zone around the survey vessel, and pass at minimum speed to reduce vessel wash. Survey operations will be conducted on a 24-hour basis.  

 

Nearshore Geophysical Investigation – Export Cable Route The geophysical operations on the AyM export cable route from the 10m LAT contour inshore to the potential landfall, are expected to be carried out from the survey vessel Valkyrie from 10th July 2020 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 Valkyrie 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. Survey operations will be conducted on a 12-hour basis  

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Deployment of Buoys - Hornsea Project Two



Ørsted have deployed a 'measurement buoy', as well as two 'transponder buckets' as part of construction of the Hornsea Project Two Offshore Wind Farm.


The devices have been placed within the Order Limits of the Hornsea Project Two offshore wind farm.

 

Note that these devices will remain on location throughout construction of the Hornsea Project Two Offshore Wind Farm and mariners should take note of their presence.

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Exposed Cable - Beatrice Offshore Windfarm



A short area (4m) of partial exposure of Export Cable EC2 is in the vicinity of the mid cable joint at the location where the cable changes direction through 180degs.


On behalf of Beatrice Offshore Windfarm Ltd, MFV Reaper call sign: MFIX5 will carry out guard vessel duties on the exposed export Cable 2, Reaper will be in location at approx 11th June 2020 and will carry out guard vessel duties until rock placement has taken place to cover the exposure.

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Soil plug removal operations



Please be advised that soil plug removal operations will re-commence using the Boa Sub C vessel within Moray East Offshore Windfarm Construction area from the 21st of June 2020 until further notice.


Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to re- commence soil plug removal operations using Boa Sub C in preparation for forthcoming jacket installation work scope within Moray East Offshore Windfarm Construction area circa 21st of June 2020 until further notice. 

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Survey - NO-UK SUBSEA CABLE SYSTEM



Xtera Ltd. has contracted Fugro to carry out a cable route survey for the proposed cable systems. The NO-UK system spans nearly 700 km between Seaton Sluice (UK) and Stavanger (NO). MV Fugro Galaxy - Call Sign: C6YY4 and Fugro Seeker - Call Sign: 2HC52.


Please be advised that Fugro will be carrying out marine operations on behalf of Xtera Ltd. for the NO-UK SUBSEA CABLE SYSTEMS.

The operations along the route will be carried out from approximately 26 June for approximately eight weeks. The exact finish date will be dependent on the prevailing weather conditions and work progress.

 

The main vessel will be running a hull mounted multibeam eco sounder along several lines in a 500 metre corridor centred on the proposed route. Towing equipment such as magnetometer and side scan sonar will be used throughout the works. Time to time the vessel will slow down or stop to measure water properties, as well as perform geotechnical measurements, necessary for this kind of study.

 

It is requested that all vessels operating within this area keep their distance, maintaining at least a 1000 metre exclusion zone, and pass at minimum speed to reduce wake interference over the sensor readings.

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Deployment of Buoys - Neart na Gaoithe OWF



Neart na Gaoithe Offshore Wind Limited (NnGOWL) have completed the deployment of four Cardinal buoys around the Neart na Gaoithe Offshore Wind Farm site.


The marker buoys will remain in place until the construction of Neart na Gaoithe Offshore Wind Farm is complete.

 

Name Coordinates
NNG N - North Cardinal - Quick (Q) White light character 56°20.424'N 002°14.616'W
NNG E - East Cardinal - Q (3) 10s White light character 56°14.329'N 002°08.557'W
NNG S - South Cardinal - Q (6) + Long (L) FL 15s White light character 56°12.293'N 002°09.760'W
NNG W - West Cardinal - Q (9) 15s White light character 56°17.057'N 002°21.083'W

 

The buoys will be deployed for the duration of the construction of Neart na Gaoithe Offshore Wind Farm. The buoys will be inspected and maintained at least every 12 months.

 

There are currently two Guard Vessels present on site, which will be on site for the duration of the Neart na Gaoithe Offshore Wind Farm construction period. The guard vessel is either:

  • Artemis, call sign MVIX5;
  • Tranquillity S, call sign MJUH9 or
  • Seagull, call sign MVBO2.
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Wave Rider Buoy - Moray Offshore Windfarm (East)



Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) have deployed a directional wave rider buoy within the bounds of Moray East Offshore Windfarm.


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Coils of Steel Rope - Neart Na Gaoithe Offshore Wind Farm



The Glomar Wave has discovered two seabed hazards, within the boundaries of the Neart na Gaoithe Export Cable Corridor. A 50-metre exclusion zone is requested around each of the following locations for safety reasons, until they can safely be removed.


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Cable Repair - GTT Segment C



Following cable repair, cable exposed due rocky seabed conditions


Notice to fisheries and seabed users in the Irish Sea:

 

Please be advised that following a recent cable repair to the GTT (Hibernia) Segment ‘C’ between Southport and Dublin, the cable has been deployed as follows:

 

Initial Splice:        53° 48.3613’N    04° 30.1514’W

Standing bight:   53° 48.2208’N    04° 29.4494’W

Final Splice:         53° 48.1279’N    04° 28.2360’W

 

It should be noted that throughout the extent of the cable repair, despite repeated attempts at post lay burial by an ROV, the predominantly very rocky seabed has meant that cable burial and hence protection has not been possible.

 

It should also be noted that at the position of the ‘standing bight’ the cable is standing upright from the seabed at a height of 0.4 metres, with a length over the ground of 2.0 metres.

 

All seabed users are requested not to deploy equipment which engages with the seabed in this area, to avoid snagging of the cable and particularly so, at the standing bight area.

 

In case of any issues, please do not hesitate to contact the GTT Hibernia emergency contact number on: +353 1 867 3600 Option 2

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Cable Repairs - IFA 2 Interconnector Project



Cable works for the IFA2 project are continuing at KP170.3 of IFA2 RPL (50°39.117'N 000°50.855'W)


Cables Repair works of the HVDC bundle in the vicinity of KP170 are continuing.

 

The Jack up ring Brave Tern will be deploying 2 yellow cable marker buoy approx. 150m apart and from each one a line 15m long with A4 buoys attached. It is expected that one will be placed in the water on 17/18 March 2020 and it is anticipated that they will remain in situ for at least two weeks.

 

Vessels should pass at a safe speed and distance (approximately 500 metres) from all construction and support vessels. During these works the vessels will have restricted maneuverability as they complete their work scope.

 

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

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Exposed Cables - Galloper Offshore Wind Farm



There was evidence of some short sections of cable exposure in 2 areas along the below cable routes in the North Field of the Galloper windfarm.


 

Area Start  Stop
E4H - E5H 51°54.963'N 002°01.325'E 51°54.384'N 002°01.224'E
OSP - F3C 51°57.105'N 002°01.213'E 51°58.309'N 002°03.799'E

 

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

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Cable Installation - Havhingsten (Irish Sea)



Subject to granting of all necessary licences and permits (expected March 2020), installation of the Havhingsten fibre optic telecommunication cable system is planned to commence, at the earliest, from April 2020 onwards.


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 proposed NW cable route

Landfall will be made at Squires Gate Lane and the cable will include two branches into the Isle of Man.

 

Installation will be via industry standard burial tools including water jetting and ploughing. Target cable burial depth is 1.5m below seabed level in the Irish Sea region.

 

It is anticipated that installation operations in UK waters will occupy up to a maximum 500m width of the seabed (250m either side of cable). The cable itself will occupy only 40mm of the seabed.

 

Expected speed of installation will be 17 km per day. With the planned installation taking approx. 19 days.

 

There will be also be associated rock placement operations post cable installation at one (1) location within UK waters listed below.

 

Rock Placement Location Name

Latitude

Longitude

Western HVDC Crossing Segment 1.5

53° 45.9867’ N

003° 48.9137’ W

 

Vessels will be working throughout 24 hours and will display appropriate day shapes and lights during reduced visibility and night operations.

 

Details of vessels proposed to be used are provided below:

 

Cable Installation Vessel: Ile de Batz (known as Ile de Class)                                                                        

DP Type

Length Overall:                                140.36 m

Breadth:                                            23.40 m                             

 

Cable Installation Support Vessel: Ile d’Aix                                                                                                       

Installation support vessel working on shore ends and post-lay inspection and burial

Length Overall:                                151.54 m

Breadth:                                            21.60 m

 

FFPV Nordnes (Rock Placement Vessel)                                                                                                             

DP Type

Length Overall:                                167 m

Breadth:                                            26 m

 

 

The proposed cable route in the IoM region

The cable route is proposed to cross the Irish Sea from Loughshinny (north of Dublin in Ireland) to Squires Gate Lane (south of Blackpool on the west coast of the UK). This section of the cable route will include two branches into the Isle of Man. With landfalls at Port Erin and Port Grenaugh.

 

Installation will be via industry standard burial tools including water jetting and ploughing. Target cable burial depth is 1.5m below seabed level in the Irish Sea region.

 

It is anticipated that installation operations in UK waters will occupy up to a maximum 500m width of the seabed (250m either side of cable). The cable itself will occupy only 40mm of the seabed.

 

Expected speed of installation will be 17 km per day. With the planned installation taking approx. 7.5 days.

Currently there are no proposed rock dump sites within the IoM region.

 

There will be also be associated rock placement operations post cable installation at the two (2) locations within IoM waters listed below.

 

Rock Placement Location Name

Latitude

Longitude

Western HVDC Crossing Segment 1.2

54° 54.7007’ N

004° 58.3552’ W

Western HVDC Crossing Segment 1.4

53° 53.8396’ N

004° 34.1792’ W

 

All fishing vessels are requested to maintain an appropriate and safe distance of 500 m when passing the cable installation vessels whilst operational and should pass at the lowest possible speed to avoid vessel wash effects.

Vessels will be working throughout 24 hours and will display appropriate day shapes and lights during reduced visibility and night operations.

 

Details of vessels proposed to be used are provided below:

 

Cable Installation Vessel: Ile de Batz (known as Ile de Class)                                                                        

DP Type

Length Overall:                                140.36 m

Breadth:                                            23.40 m                             

 

Cable Installation Support Vessel: Ile d’Aix                                                                                                       

Installation support vessel working on shore ends and post-lay inspection and burial

Length Overall:                                151.54 m

Breadth:                                            21.60 m

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Cable Installation - Havhingsten (North Sea)



Subject to granting of all necessary licences and permits (expected March 2020), installation of the Havhingsten fibre optic telecommunication cable system is planned to commence, at the earliest, from April 2020 onwards.


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 proposed cable route in the NE.

Landfall will be made at Seaton Sluice.

Installation will be via industry standard burial tools including water jetting and ploughing. Target cable burial depth is 2m below seabed level in the North Sea region.

 

It is anticipated that installation operations in UK waters will occupy up to a maximum 500m width of the seabed (250m either side of cable). The cable itself will occupy only 40mm of the seabed.

 

Planned durations of works are as per below:

  • Seaton Sluice: Nearshore to 12nm Territorial Waters boundary: 3-4 days (including 1 day for shore end landing)
  • Seaton Sluice: 12nm Territorial Waters boundary to EEZ boundary (median line): 22 days (including 4 x pipeline crossings)

Expected speed of installation will be 17 km per day.

There will be also be associated rock placement operations post cable installation at the four (4) locations within UK waters listed below. There will also be associated pre-lay rock placement at CATS and Shell pipelines.

 

Planned durations of works are as per below:

  • Seaton Sluice: Nearshore to 12nm Territorial Waters boundary: 3-4 days (including 1 day for shore end landing)
  • Seaton Sluice: 12nm Territorial Waters boundary to EEZ boundary (median line): 22 days (including 4 x pipeline crossings)

Expected speed of installation will be 17 km per day.

 

There will be also be associated rock placement operations post cable installation at the four (4) locations within UK waters listed below. There will also be associated pre-lay rock placement at CATS and Shell pipelines.

 

Rock Placement Location Name

Latitude

Longitude

Shearwater to Bacton  

55 ° 30.7307' N

01° 34.1312' E

Sleipner to Easington

55° 22.3285' N

0° 40.8843' E

Norpipe Pipeline

55° 19.1729' N

0° 16.0142' E

Cats Pipeline

55° 15.8120' N

0° 21.9184' W

 

All fishing vessels are requested to maintain an appropriate and safe distance of 500 m when passing the cable installation vessels whilst operational and should pass at the lowest possible speed to avoid vessel wash effects. Vessels will be working throughout 24 hours and will display appropriate day shapes and lights during reduced visibility and night operations.

 

Details of vessels proposed to be used are provided below:

 

Cable Installation Vessel: Ile de Batz (known as Ile de Class)                                                                        

DP Type

Length Overall:                                140.36 m

Breadth:                                            23.40 m                             

 

Cable Installation Support Vessel: Ile d’Aix                                                                                                       

Installation support vessel working on shore ends and post-lay inspection and burial

Length Overall:                                151.54 m

Breadth:                                            21.60 m

 

FFPV Nordnes (Rock Placement Vessel)                                                                                                             

DP Type

Length Overall:                                167 m

Breadth:                                            26 m

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Exposed Cable Sections - EirGrid East West Interconnector



Following a recent marine survey along the route of the EirGrid East West Interconnector power cable, is was found that the cable is currently exposed at two locations within UK 12-mile territorial waters fishery limit off the North Wales coast.


In the interests of maritime safety, mariners/fishermen are advised not to anchor, trawl or deploy bottom contact fishing equipment in the vicinity of the EirGrid East West Interconnector power cable route and within the boundary box of the exposed cable sections as detailed.

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Deployment of Marker Buoys - Nemo Link Cable



2 x Marker buoys have been deployed along the Nemo Link Cable


Marker buoys have been deployed at 2 locations along the Nemo Link subsea cable route approximately 8.5km and 17.5km East of Ramsgate at the following positions:                                                                                                                                                            

 

51°19.193'N 001°32.578'E                                                                                                                                

51°19.817'N 001°40.282'E                                                                                                                                                                                                            

 

The buoys consist of a hull, day marker, mooring chain and sinker. The outer hulls and day marks are identified by yellow paint.

Fishermen and Mariners are requested to note the buoy locations and to maintain a safe distance during fishing and marine activities.

                  

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Dropped objects on seabed



During recent maintenance work at Turbine position C06 several objects were dropped on the seabed. The biggest being a Bearing Transport Frame (1800mm x 2236mm x 830mm) weight – 947kg as well as 33m of steel Crane Wire and several smaller objects.


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Cable spans



Surveys at Greater Gabbard show that there are 8 free-spans which are listed below.


Location

Span Length (m)

Span Height (cm)

Start of Span

End of Span

L1 cable

6

0

52° 12.284'N 001°39.364'E

52°12.283'N 001°39.369'E

L1 cable

8

13

52° 12.271'N 001°39.434'E

52°12.270'N 001°39.441'E

L1 cable

8

20

52° 12.064'N 001°40.559'E

52°12.061'N 001°40.565'E

L2 cable

15

5

52° 12.128'N 001°40.524'E

52°12.124'N 001°40.535'E

L2 cable

8

76

52° 12.119'N 001°40.560'E

52°12.118'N 001°40.567'E

L3 cable

3

11

52° 12.169'N 001°40.502'E

52°12.169'N 001°40.504'E

L3 cable

13

34

52° 12.148'N 001°40.594'E

52°12.146'N 001°40.604'E

L3 cable

17

10

51° 59.194'N 001°57.431'E

51°59.187'N 001°57.442'E

 

Whilst the results continue to be processed, Balfour Beatty have asked that in the interest of safety and the integrity of the cable, extreme caution be used when Fishing near the export cables and that Fishermen refrain from using towed gear across the export cables wherever possible.

 

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Exposed sections of cable



Surveys at Gunfleet Sands offshore wind farm have illustrated that some array/in-field cables are lying exposed on the seabed and are no longer buried and there is one freespan. These may represent a hazard to fishing.


These are the following cables located in the eastern part of Gunfleet Sands 1 and the north eastern part of Gunfleet Sands 2.

 

Location

Exposure Length (m)

Start of Exposure

End of Exposure

Between turbines C06-D06

4

51°44.447'N 01°15.045'E

51°44.445'N 01°15.046'E

Between turbines F06-F07

23.7

51°44.204'N 01°16.057'E

51°44.209'N 01°16.076'E

Between turbines F07-F08

78.4

51°44.471'N 01°16.744'E

51°44.448'N 01°16.688'E

Between turbines F08-F09

851.7

51°44.485'N 01°16.777'E

51°44.726'N 01°17.398'E

Between turbines G06-G07

21.7

51°44.008'N 01°16.270'E

51°44.002'N 01°16.255'E

Between turbines G07-G08

21.9

51°44.273'N 01°16.948'E

51°44.267'N 01°16.932'E

Between turbines G08-G09

20.7

51°44.276'N 01°16.953'E

51°44.280'N 01°16.969'E

Between turbines G08-G09

16.6

51°44.522'N 01°17.591'E

51°44.527'N 01°17.603'E

 

There is a freespan at the following array Cable Position:

 

Location

Exposure Length (m)

Start of Exposure

End of Exposure

Between turbines C06-D06

4

51°44.447'N 01°15.045'E

51°44.445'N 01°15.046'E

 

 

 

See detailed map on our bulletin website
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Exposed Export Cable (Beatrice Wind Farm)



During a routine inspection of the export cable EC2, a short section of the cable was found to be partially exposed on the Seabed. This may constitute a hazard to activities such as fishing and anchoring.


A short area (4metres) of partial exposure of Export Cable EC2 is in the vicinity of the mid cable joint at the location where the cable changes direction through 180 degrees.

 

The maximum exposure observed was approx. 50% with no damage or defects observed. The seabed at location was observed to be flat and featureless and mainly consisted of sand and silt. It is requested that mariners avoid activities which are likely to disturb the seabed within a 500m Radius of this location until the exposed cable has been re-buried. A further Notice to Mariners will be issued to confirm the re-burial and safe operation in this area.

See detailed map on our bulletin website
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Exposed cable and lost fishing gear



Exposed section of cable and lost fishing gear.


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Exposed cable and lost fishing gear



Exposed section of cable and lost fishing gear.


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Exposed Cable Section (SHEFA)



There is an exposed section on the SHEFA cable coming out of Orkney between the two positions below.


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