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Media Gallery

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Emergency Contact Numbers

The numbers below are the emergency contact numbers for Subsea Cables and Renewable Energy Structures. These phone numbers relate to each offshore structure and may be used in case of an emergency, or urgent situation.

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Emergency Procedures

Please keep clear of and do not damage subsea cables/structures. You risk the loss of your gear and catch, and international communications can be disrupted. These cables carry high voltages and can be dangerous to life. Many cables have high breaking strains, some over 70 tonnes. Cables will usually lie buried in the seabed, although because the seabed can move, there is no guarantee they will remain in the same place.

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Reducing Risks Whilst Fishing

It is essential to be aware of the locations of subsea cables and renewable energy infrastructure, when fishing in the vicinity of such structures. It is essential you have all the information in relation to their positions available to you and the KIS-ORCA project is designed to provide exactly that for all seabed users. Charts, fishing plotter files and an interactive map, showing subsea cables and renewable energy structures surrounding the UK, may be viewed or downloaded, free of charge.

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The Risks of Fishing near Cables & Renewable Energy Structures

The potential risks associated with the offshore renewable and subsea cable industries come in two distinct categories - surface structures and subsurface structures. Each type of structure may potentially be a risk to fishing activities. The information below describes these hazards, with the subsequent sections explaining the emergency procedures.

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Media Gallery

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Tidal Device Principles

Tidal devices exploit kinetic energy in the tidal flow of water caused by the interaction of the gravitational fields of the earth, moon and sun. Tidal currents are magnified by topographical features, such as headlands, inlets and straits, or sea bed channels. Many of the devices that use these currents are broadly similar to submerged wind turbines. Sea water is around 800 times denser than air but average flow speeds for viable projects are of the order of one fifth of corresponding wind speeds, giving a power density of around 5-10 times. This means that for a tidal device of the same rating as a wind turbine, the rotor will be smaller. Individual tidal devices are unlikely to reach the same rated power as offshore wind turbines; however, as to have sufficient space to deploy such large devices requires development of deeper water sites that generally have less significant tidal flows. EMEC has identified four main types of tidal energy convertors that are outline below.

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Wave Device Principles

Waves are created by the interaction of wind with the surface of the sea, sometimes over very long distances.  The size of the waves is influenced by wind, the local seabed bathymetry (which can focus or disperse the energy of the waves) and currents.  Waves offer a large source of energy which can be converted into electricity by a wave energy converter (WEC).  Some wave energy converters have been developed to extract energy from the shoreline, others from waters offshore, some with a hydraulic power take-off system and some with an electrical power take-off system.  EMEC has identified six main types of wave energy converter that are outlined below. 

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Wave & Tidal Devices – Overview

The United Kingdom's wave and tidal stream energy industry is the current global leader, with more installed capacity than the rest of the world combined. Our strength has been built on established British marine engineering skills, the creation of world-first testing facilities and the strength of the energy resource found in UK waters. The UK is proud to have developed the first commercial scale wave and tidal stream projects in 1998 and 2003 respectively but the industry is now on the cusp of commercial viability as we move through the phases of development.

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Wind Farms – Installation Methods

Life cycle stages

Lease award and Pre-construction

Once a developer has obtained a lease from the Crown Estate they will start to appraise the zone or lease area. This requires a number of surveys to be completed including boat or aerial based bird and marine mammals surveys, benthic grabs and fish surveys.

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Wind Farms – Design of Structures Installed

Offshore wind farms consist of a number of connected elements. These include the turbines, foundations, array cables, offshore substation, export cable and onshore substation and infrastructure. These items are installed using a range of different vessels and then serviced by either smaller crew transfer vessels or helicopters.

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Windfarms - Overview

Offshore wind farms consist of a number of wind turbines which sit on foundations, secured to the seafloor, which produce electricity. This electricity is transmitted to where it is needed through a series of cables and substations. The first offshore wind farm was installed in Denmark in 1991 and the industry has grown rapidly since then with 3.3GW installed across Europe (1.8GW of which is in the UK).  China, US, Japan and South Korea have also started to develop offshore wind farms.

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Terms & Conditions

  Terms and Conditions - KIS-ORCA Website This website, www.kis-orca.eu, ("the Site") is provided to you ("you" meaning any person, firm, partnership, corporate body or any other legal person accessing or otherwise using, or benefitting from the use of, this Site) by the Kingfisher Division of Seafish, ESCA and its Members. Data which is provided via this Site, including Plotter Data, is provided free of charge. Kingfisher Information Services and ESCA DO NOT verify data provided on the Site, including Plotter Data. Please read these Terms carefully before using this Site: 1 AUTHORITY AND LICENCE FOR USE OF THE SITE 1.1 In making use of the Site, you agree to be bound by these Terms which form the sole agreement between you as user of the Site and us ("Agreement"). 1.2 If you do not agree to be bound by these Terms, you should not use the Site. 1.3 You acknowledge that your use of the Site: 1.3.1 may be limited at any time by us; and 1.3.2 may be suspended or terminated at any time by us. 2 DISCLAIMER 2.1 We give you no warranty or assurance, except as set out in Condition 6 (Our Obligations). We declare and you acknowledge that all implied warranties and conditions are excluded to the maximum extent permitted by law. 2.2 We are not responsible for any: 2.2.1 typographical errors or omissions on the Site; 2.2.2 data, information, text, music, sound, photos or graphics or other material ("Content") that you may have access to as part of, or through your use of the Site, including, but not limited to, other websites that you may access via links provided on our Site; or 2.2.3 Content you may be exposed to through use of the Site that you may find offensive, indecent or objectionable. 2.3 We do not warrant that the Content of this Site is accurate, complete, reliable, current or error-free. 3 LIABILITY 3.1 In respect of use of Plotter Data, we shall have no liability whatsoever to you where the Plotter Data: 3.1.1 as provided to us by any data provider or originator is erroneous, inaccurate or in an incomplete form and such fact is not known to us; 3.1.2 is uploaded to any fishing plotter incorrectly or in an incomplete form; 3.1.3 is not read in conjunction with the Kingfisher Fortnightly Bulletin or any other updates, whether in paper or digital form; 3.1.4 is erroneously interpreted by you or utilised by you in a negligent or reckless manner, or for a purpose for which it was not intended or designed. 4 PROPRIETARY RIGHTS 4.1 You acknowledge and agree that we own all copyright and other rights in and to the content of the Site. 4.2 You agree that you will not remove, obscure or alter any proprietary rights notices (including copyright and trade mark notices) which may be affixed to or contained within the Site. 4.3 You agree that you will not use any data from this site for commercial gain without obtaining permission from KIS-ORCA. 5 YOUR OBLIGATIONS 5.1 You will take reasonable steps to ensure that you comply with these Terms and do not: 5.1.1 engage in any activity that interferes with, or disrupts the operation of, the Site; 5.1.2 access or attempt to access any element of the Site by any means other than through the interface that we provide, unless expressly authorised by us; 5.1.3 reproduce, duplicate, copy, sell, trade or resell the facilities provided on the Site, unless expressly authorised by us; 5.1.4 purport to transfer or otherwise dispose of your rights under these Terms. 5.2 By submitting your personal information to us you agree to our collection, use and disclosure of such information in accordance with our privacy policy set out in Condition 7. 6 OUR OBLIGATIONS 6.1 We will take reasonable steps to ensure that the Site supplied is virus-free. 6.2 We shall use our best endeavours to ensure that access and use of the Site is not interrupted by any event within our control. 7 PRIVACY POLICY 7.1 You acknowledge and agree that: 7.1.1 we collect information about you and your use of this Site, together with any details that you may need to provide for access to, or use of, the Site; 7.1.2 we monitor user traffic patterns and Site use. This may be done through the use of cookies; 7.1.3 we use and disclose information in aggregate (so that no individual users are identified) for strategic development purposes. 7.2 We will never pass personal data to anyone else, except to any successor in title to our business and suppliers that may process data on our behalf in the United Kingdom and abroad. 8 TERMINATION 8.1 This Agreement will terminate if you or we are in material breach of any of its terms and if the breach is not remedied within the period of twenty working days after written notice of it has been given to the party in breach. 8.2 On termination of this Agreement for any reason: 8.2.1 all licences granted hereunder shall immediately terminate; and 8.2.2 termination shall not affect or prejudice the accrued rights of the parties as at termination, or the continuation after termination of any provision expressly stated to survive or implicitly surviving termination. 9 MISCELLANEOUS 9.1 This Agreement is not intended to benefit anyone other than the parties to it and, in particular, no term of this Agreement shall be enforceable under the Contracts (Rights of Third Parties) Act 1999 by a third party. 9.2 If any provision (or part of a provision) of this Agreement is found by any court or administrative body of competent jurisdiction to be invalid, unenforceable or illegal, the other provisions shall remain in force. 9.3 Each of the parties acknowledges and agrees that in entering into this Agreement it does not rely on, and shall have no remedy in respect of, any statement, representation, warranty or understanding (whether negligently made or not) of any person (whether party to this Agreement or not) other than as expressly set out in this Agreement. The only remedy available to it for breach of the Agreement shall be for breach of contract under the terms of this Agreement. End  

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Privacy

KIS-ORCA.eu does not store any information that would, on its own, allow us to identify individual users of this service without their permission. Any cookies that may be used by this website are used either solely on a per session basis or to maintain user preferences. When users enter the KIS-ORCA website, their computers will automatically be issued with 'cookies'. Cookies are text files which identify users' computers to servers. The website then creates "session" cookies to store some of the preferences of users moving around the website, e.g. retaining a text-only preference. Cookies in themselves do not identify individual users, but identify only the computer used and they are deleted on departure from the website. Many websites do this to track traffic flows, whenever users visit those websites. The KIS-ORCA website uses third-party cookies to measure use of the website including number of visitors and how frequently pages are viewed. This helps to determine what is popular and can influence future content and development. For this purpose, KIS-ORCA uses Google Analytics to measure and analyse usage of the website. The information collected will include IP Address, pages visited, browser type and operating system. The data will not be used to identify any user personally. Users have the opportunity to set their computers to accept all cookies, to notify them when a cookie is issued, or not to receive cookies at any time. The last of these means that certain personalised services cannot then be provided to that user. This privacy statement only covers the KIS-ORCA website at www.kis-orca.eu  This statement does not cover links within this site to other websites.

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Accessibility

The KIS-ORCA partners are committed to producing websites and web resources that can be accessed by all its visitors. We are always keen to hear about ways we can improve the services we provide. If you are having any difficulties using this website, please contact kingfisher@seafish.co.uk Many web browsers have accessibility features, which help you use the web in the way that best suits you. We recommend you select the browser which best suits your needs. You may also need to configure your operating sytem to tailor its accessibility features to your needs.

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The Importance of Renewable Energy Structures

The UK is the world leader in offshore renewables. We have more projects installed, more in construction and more in development than any other country in the world.

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The Future of Subsea Cables

Subsea telecommunication cables have a very long history. Since the installation of the world's first submarine cable across the Dover Strait in 1850, Subsea cables have been essential to the worlds communications infrastructure.

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Submarine Cable Maintenance

Under a Cable Maintenance Agreement and on notification from a Maintenance Authority, a cable repair ship operator will mobilise one of its vessels to conduct a repair on a subsea cable. The maintenance authority will provide an estimated position of the cable fault based on tests carried out from the cable Terminal Stations located either end of the marine cable. Permitting, Charting, and existing cable information is assessed prior to the vessel departing.

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Maintenance / Repair Operations

Submarine cables are very reliable, however, there are occasions when a repair to a cable becomes necessary.

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Cable Burial

At the planning and installation phase of a submarine cable project one of the most effective methods of protecting a submarine cable from damage caused by external aggression is to bury the cable, usually with a sea plough.

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Installation Procedures and Methods

Selection of provisional route

Once the requirement for a cable system has been identified and funds raised to build it, the first thing which happens is that a cable manufacturer and installer is contracted by the cable system parties.

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Design

Modern Fibre optic cables can carry many millions of telephone calls, together with huge amounts of video and internet data.  Approximately 95% of the world's telecommunication requirements are met by submarine cables. Cables are used because of their high reliability, capacity and security. Cables have an insignificant delay compared to satellite and are most cost-effective on major routes, hence communications costs are cheaper than satellites.

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About

The KIS-ORCA Project The Kingfisher Information Service - Offshore Renewable & Cable Awareness project (KIS-ORCA) is a joint initiative between the European Subsea Cables Association (ESCA) and the Kingfisher Information Service of Seafish. ESCA membership represents much of the subsea telecommunications and offshore renewable energy industry and they work with industry bodies like Renewable UK who recognise the benefit and value of the KIS-ORCA project. The aim of the KIS-ORCA project is to provide fishermen with accurate, up to date and free information relating to subsea cables and offshore renewable energy structures across Europe. KIS-ORCA information is available to fishermen in the following formats: Fishing Plotter Files Supplied on USB stick, all the KIS-ORCA data is available to fishermen in the most popular fishing plotter system formats and is updated annually. These files are also available to download from here. Awareness Charts Awareness charts are produced for key KIS-ORCA data areas. There are six charts surrounding the UK and localised charts for each constructed wind farm. These are available to download from here. www.KIS-ORCA.eu This interactive website allows fishermen to view subsea cable and renewable energy structures on an interactive map, download the latest data and ensure they are up-to-date with the very latest offshore activity news. The website has been produced primarily for Fishing Safety, although also gives fishermen an insight into the offshore industries they share the seabed with.

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News

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Safety

Offshore windfarms and subsea cables are increasing in number around the shores of the UK and the potential risks to fishermen, associated with these structures, need to be recognised and managed in a responsible way.

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Renewable Energy

This section contains information relating to Renewable Energy Structures, from design to installation, maintenance to future trends.

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Subsea Cables

This section contains information relating to Subsea Telecoms and Power Cables, from design to installation, maintenance to future trends.

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Homepage

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Map

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Downloads

ALL PLOTTERS (Fishing Plotter File) download

ALL PLOTTERS (Fishing Plotter File)

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Litton FishMaster (Fishing Plotter File) download

Litton FishMaster (Fishing Plotter File)

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Maxsea (Fishing Plotter File) download

Maxsea (Fishing Plotter File)

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Olex (Fishing Plotter File) download

Olex (Fishing Plotter File)

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Penta (Fishing Plotter File) download

Penta (Fishing Plotter File)

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SIS MicroPlot (Fishing Plotter File) download

SIS MicroPlot (Fishing Plotter File)

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Sodena (Fishing Plotter File) download

Sodena (Fishing Plotter File)

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TM Planner / Quodfish (Fishing Plotter File) download

TM Planner / Quodfish (Fishing Plotter File)

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TRAX (Fishing Plotter File) download

TRAX (Fishing Plotter File)

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Transas Navifisher (Fishing Plotter File) download

Transas Navifisher (Fishing Plotter File)

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Kingfisher Regional - North Sea North and West 2020 download

Kingfisher Regional - North Sea North and West 2020

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Kingfisher Regional - North Sea Central 2020 download

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Kingfisher Regional - North Sea South 2020 download

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Kingfisher Regional - English Channel 2020 download

Kingfisher Regional - English Channel 2020

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Kingfisher Regional - South West Approaches 2020 download

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Kingfisher Regional - Baltic North 2020 download

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Kingfisher Wallchart 2020 download

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Beatrice 2020 download

Beatrice 2020

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Kingfisher Regional - Irish Sea 2020 download

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Hywind 2020 download

Hywind 2020

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Aberdeen Demonstrator Project 2020 download

Aberdeen Demonstrator Project 2020

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Kincardine 2020 download

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Blyth 2020 download

Blyth 2020

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Blyth Demonstrator Project 2020 download

Blyth Demonstrator Project 2020

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Teesside 2020 download

Teesside 2020

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Hornsea Project One 2020 download

Hornsea Project One 2020

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Westermost Rough 2020 download

Westermost Rough 2020

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Humber Gateway 2020 download

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Triton Knoll 2020 download

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Race Bank 2020 download

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Sheringham Shoal 2020 download

Sheringham Shoal 2020

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Dudgeon 2020  download

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Lincs 2020 download

Lincs 2020

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Inner Dowsing & Lynn 2020 download

Inner Dowsing & Lynn 2020

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Scroby Sands 2020 download

Scroby Sands 2020

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Galloper 2020 download

Galloper 2020

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Greater Gabbard 2020 download

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Gunfleet Sands & Demonstrator Site 2020 download

Gunfleet Sands & Demonstrator Site 2020

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London Array 2020 download

London Array 2020

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Kentish Flats & Extension 2020 download

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Thanet 2020 download

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Rampion 2020 download

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Rhyl Flats 2020 download

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Gwynt Y Mor 2020 download

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North Hoyle 2020 download

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Burbo Bank & Extension 2020 download

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Barrow 2020 download

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West of Duddon Sands 2020 download

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Walney 1-4 2020 download

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Ormonde 2020 download

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Robin Rigg 2020 download

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Nysted 2020 download

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Horns Rev 3 2020 download

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Horns Rev 2 2020 download

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Horns Rev 1 2020 download

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Gode Wind 2 2020 download

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Gode Wind 1 2020 download

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Borkum Riffgrund 2020 download

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Anholt 2020 download

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Fishing Plotter Installation Guide download

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News

Elgood to Blythe & Blythe to Thames, Pipeline Installations

This NtM relates to the installation of two pipelines from Elgood to Blythe and Blythe to Thames, in the UK sector of the southern North Sea.

Independent Oil and Gas (IOG) will be installing two gas pipelines in the southern North Sea, a 6-inch diameter pipeline from the Elgood field to the Blythe field and a 12-inch pipeline from the Blythe field to a tie-in point on the existing Thames pipeline. 

 

The area is in the UK Sector off the Norfolk coast.

 

During the second half of 2020 works will include surveys in advance of the pipeline installation, protecting sections of existing pipelines in readiness for the crossing by the new 12-inch pipeline, and the laying and trenching (burial) of the two pipelines.

 

Pipeline Installation Operations

Will be performed from the DP vessel Seven Navica,

Call-sign: M2HR7

MMSI: 232419000

LOA: 109 metres 

Breadth: 22 metres

 

The vessel will be installing pipelines from her stern and deploying a remotely operated vehicle (ROV) in the water, which will severely restrict her ability to manoeuvre.

 

Pipeline Burial Operations

Will be performed from the DP vessel Grand Canyon III,

Call-sign: LACJ8

MMSI: 257010590

LOA: 128 metres 

Breadth: 25 metres

 

The vessel will be deploying and operating a trenching machine from a midships position and may simultaneously deploy a remotely operated vehicle (ROV) in he water, which will severely restrict her ability to manoeuvre.

 

Prior to burial of the pipeline the vessel shall be performing other preparatory works over the pipeline routes.

 

 

Whilst performing these activities the vessels shall either be static or moving at an approximate speed of <1 knot. Vessel heading may not be indicative of direction of travel.

 

Operations will be conducted on a 24-hour basis.

 

It is requested that all vessels within the area maintain a safe distance (500m) and pass at reduced speed.

 

Throughout these operations the vessels will be displaying the shapes and lights prescribed in the International Rules for the Prevention of Collisions at Sea (COLREGS) Rule 27, (Vessels not under command or restricted in their ability to manoeuvre).

 

Location: Elgood to Blythe 6-inch Pipeline

DD MM.mmmm (WGS-84)

The 6-inch pipeline will be laid along the following route

(curves denoted as straight lines for ease of plotting):

53°18.299’N  01°23.642’E

Point 2

53°17.586’N  01°24.684’E

Point 3

53°17.527’N  01°24.687’E

Point 4

53°16.459’N  01°26.740’E

Point 5

53°15.394’N  01°27.755’E

Blythe Platform locality - Point 6

53°14.512’N  01°26.744’E

Location: Blythe to Thames Pipeline Connection 12-inch pipeline

DD MM.mmmm (WGS-84)

The 12-inch pipeline will be laid along the following route:

 
Blythe Platform locality – Point 1 53°14.490’N  01°26.792’E

to Point 2 - Crossing

53°13.748’N  01°27.876’E

to Point 3 – Crossing

53°13.703’N  01°27.942’E

to Point 4 – Crossing

53°06.318’N  01°38.692’E

to Point 5 – Crossing

53° 06.274’N  01°38.759'E

to Point 6 - Crossing

53° 06.247’N  01°38.796’E

to Thames Pipeline Connection locality - Point 7

53° 04.550’N  01°41.259’E

 

See detailed map on our bulletin website
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Sound measurement study Hywind Scotland Pilot Park

Hywind Scotland Pilot Park is performing a sound measurement study where the purpose is to document the operational noise from floating offshore wind turbines and their substructures, mooring lines and cables.

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

 

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

 

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

 

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

 

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

 

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

 

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

 

 

Positions for recorders in wind park and in control location

 

Location

Latitude

Longitude

Easting (m)†

Northing (m)†

Hywind Scotland

57° 29' 04.2741" N

1° 20' 33.8512" W

599357.410

6372534.418

Control

57° 31' 48.0000" N

1° 07' 33.6000" W

612209.809

6377933.954

 

 

 

Vessel Specification

 

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

 

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

 

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

 

 

 

See detailed map on our bulletin website
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Lidar Deployment - East Anglia Two Wind Farm

The buoy has been temporarily recovered from site leaving some mooring components and the anchor weight on the seabed

The mooring and anchor weight remains on the seabed at the location. It should be noted that part of the remaining mooring is buoyant and therefore poses a risk of entanglement for passing vessels. To avoid risk of entanglement, vessels should allow a minimum 200 m clearance from the location.

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.

 

See detailed map on our bulletin website
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Pipeline Flushing and Disconnection - Balmoral Area

Please note that Premier Oil’s project to flush and disconnect a number of pipelines / wells in the Balmoral and Glamis fields will be undertaken during the period of 28th September to 15th November 2020.

The earliest start date for operations to commence is 28th September. The flushing and disconnection operations of the infrastructure (split into two campaigns) are expected to be carried out between 30th September and 15th November All flushing and disconnection works will be undertaken from the Seven Atlantic DSV

See detailed map on our bulletin 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 the recovery of metocean equipment expected to be completed over the next week.

Mariners are advised that the MMS Humber Engineer is expected on site over the next week to recover the the metocean equipment deployed in the nearshore area of the SOWF export cable route, following its initial deployment by the Curtis Marshall on or around 6th August 2020.  The date of works will however be dependent on prevailing weather conditions .

 

The deployment location is as follows (WGS_1984_UTM_Zone_31N):

 

Equipment Lat_DDM Long_DDM
Seabed Frame 54 36.471N 001 00.540W
Anchor Weight 54 36.474N 001 00.573W

 

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.

 

As the MMS Humber Engineer will be recovering survey equipment from the vessel, it is requested that all vessels operating within this area keep their distance, maintaining at least the 500 m exclusion including in the survey area buffer (coordinates above), and pass at minimum speed to reduce vessel wash.

 

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

See detailed map on our bulletin website
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Rig - Valaris 123

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Transocean Endurance

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Marine Aggregate Area 526

A bathymetric survey of Area 526 on behalf of the Resource Management Association

On behalf of the Resource Management Association, this notice is to advise that geophysical surveying is due to commence shortly on Area 526 in the Bristol Channel. Current date of commencement of operations is 24 August 2020 subject to existence of a suitable weather window. The survey will acquire multibeam data from a hull-mounted system. The work areas are focused around Area 526, with geophysical surveys extending up to 50 m beyond the limits of the licensed boundaries.

 

The geophysical survey will be completed from the vessel Shoreline.

 

The surveys will take approximately 2 to 3 days to complete once operations are underway, subject to weather.

 

Further updates will be provided in this publication as the surveys progress.

See detailed map on our bulletin website
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Scientific mooring deployments - West of Orkney and Thurso Bay

Partrac Ltd. Installed marine sensors at 3 sites in Thurso bay and west of Orkney on Stormy bank, over the period 15th to 17th October 2020.

Sub-surface moorings will be deployed at three survey locations, each marked with a simple surface buoy positioned ~200m from the instrument location. A surface moored wave buoy will also be deployed at Survey point 5. The wave buoy is fitted with a 2m whip antenna, with a light sequence of Y.Fl.5(20s)

 

Instrumentation at Southern Stormy Bank relocated 

See detailed map on our bulletin website
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Pipeline Activities - Arran Field

A Pipeline Initiation System (an arrangement of anchors, chains and wires) has been installed within the Arran South 500m safety zone (installed on 28/09/20). Further vessel activity will be taking place in the area as below.

Skandi Skansen – Trenching Operations (Subsea7) Arran Field Development – Infield 23/07/20 – Depart Field on 25/10/20

  • Ploughing 1/3 Columbus to Shearwater
  • Ploughing 2/3 Arran South to Columbus
  • Ploughing 3/3 Arran North to Arran South
  • Backfill 1/3 Shearwater to Columbus
  • Backfill 2/3 Columbus to Arran South
  • Backfill 3/3 Columbus to Arran South

Seven Arctic – Structure Installation (Subsea 7) Arran Field Development – Infield 24/09/20 – Depart Field on 03/10/20

  • ANTIS & CTIS structures installation

Van Oord Nordnes – Rockdump Operations – Arran Field Development – Infield 14/11/20 – Depart Field on 28/11/20

  • Rockdump

Seven Falcon – Pipeline Operations (Subsea 7) - Arran Field Development – Infield 28/11/20 – Depart Field on 04/12/20

  • Pipeline Strength Test
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Pierce and Shearwater Fields - Vessel Activity

Survey, Pipelay, Trenching, Pre-Com, D4 Well Tie-Ins, Diving Works and Rock dump Operations

Seven Falcon – D4 Well tie-ins (Subsea 7) Pierce Infill Wells Project scopes – Infield 08/09/20 – Depart Field on 07/10/20

  • Installation of tie-in pipework for new D4 tree, including temporary isolations of existing infrastructure to facilitate tie-in.
  • Installation of control infrastructure for new D4 tree
  • Leak testing of new pipework
  • Replacement of old flexible pipe and control system upgrade at B1z tree

 

Skandi Skansen – Trenching, Backfill and Pre-Commissioning Operations (Subsea 7) Pierce Depressurisation Project scopes – Infield 28/10/20 – Depart Field on 29/11/20

  • Trench pipeline from Pierce to Shearwater
  • Post trench survey from Pierce to Shearwater
  • Backfill pipeline from Shearwater to Pierce
  • Post backfill/out of straightness survey from Pierce to Shearwater
  • Flood, clean, gauge and strength test pipeline – Scope may be transferred to another campaign (3.3 days infield)

Seven Kestrel – Infield diving works (Subsea 7) Pierce Infill Wells Project scopes – Infield 14/10/20 – Depart Field on 20/10/20

  • Replacement of old flexible pipe and control system upgrade at A5 tree
  • Disconnection of water injection pipework
  • Matting and protection
  • Precommissioning work on the Pierce-Shearwater pipeline (Haewene Brim 500, and Shearwater 500 zones)

Seven Falcon (Subsea 7) – Pierce Gas Export Pipeline Initial Pre-Commissioning and Shearwater Tie-in Metrology  – Infield 05/11/20 – Depart Field on 08/11/20

  • Pierce 500m zone – Complete survey verifications and as-found survey of pipeline pig launcher/receiver (PLR)
  • Pierce 500m zone - Install hot stab complete with non-return valve on PLR and configure PLR valves to required status
  • Shearwater 500m zone – Complete as-found survey of pipeline PLR
  • Shearwater 500m zone – Deploy and connect downline complete with hotstab to PLR
  • Shearwater 500m zone – Propel 3 off pigs to complete the pipeline flood, clean and gauging operations, whilst configuring the PLR valves as required
  • Shearwater 500m zone – Complete pipeline hydrotest
  • Shearwater 500m zone – Depressurise the pipeline, disconnect and recover downline and complete as-left survey
  • Shearwater 500m zone – Complete pipeline flange to SSIV tie-in flange metrology and complete as-left survey
  • Pierce 500m zone – Confirm pigs have been received with PLR
  • Pierce 500m zone – reconfigure PLR valves and disconnect and recover the hot stab complete with non-return valve
  • Pierce 500m zone – Complete as-left survey

Rock Installation Vessel (TBC)  –  Rock Dumping Operations (TBC) Pierce Depressurisation Project scopes – Infield 08/11/20 – Depart Field on 13/11/20

  • Rock dump installation over trench transitions at Pierce and Shearwater
  • Rock dump installation over crossing location and trench transitions to either side of the crossing
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Tolmount Development Area

Notice to alert sea users to the mobilisation of the MODU Valaris 123 Jackup Unit in Block 42/28d in October 2020.

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

 

The Valaris123 Jackup Drilling Rig has arrived on location and will commence activity to jack up over the Tolmount platform, where combined operations will commence for approximately 12 months (subject to further Kingfisher bulletins).

 

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

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Deployment of oceanographic sensors - Dee Estuary

Oceanographic sensors will be deployed for a period of 12 months at 4 locations at the mouth and to the north of the Dee Estuary.

Oceanographic sensors will be deployed for a period of 12 months at 4 locations at the mouth and to the north of the Dee Estuary. The sensors will be deployed in early November 2020 using the Port of Mostyn workboat, Eileen. Each location will be marked by a yellow surface buoy with a yellow 'X' topmark and will be lit with characteristics Fl.Y.(5)20s.

 

A 50m exclusion is requested from the marker buoy. Each location will be visited at 3 month intervals for mooring maintenence, using the Port of Mostyn workboat, Eileen.

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Survey / Inspection Ops (EDT Hercules) - Culzean

The EDT Hercules (Call Sign: 5BAM4) will be carrying out DAS (Distributed Acoustic Sensing) / VSP (Vertical Seismic Profile) survey activities, during the period 26th Oct to 9th Nov 2020.

The EDT Hercules (Call Sign: 5BAM4) will be carrying out DAS (Distributed Acoustic Sensing) /  VSP (Vertical Seismic Profile) survey activities, during the period 26th Oct to 9th Nov 2020.

 

EDT Hercules with be deploying a seismic source, but will not be towing a streamer and will be working to the SW of the Culzean platforms in an area bounded by the points below:

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Survey - Seagreen Offshore Windfarm

A Geophysical and Unexploded Ordnance survey on behalf of Seagreen Wind Energy. The survey will take place within the Seagreen Alpha and Seagreen Bravo export cable corridor. From 30th October for 1 week using vessel MV Olympic Artemis Call Sign: LAFV8.

The survey vessel is expected on site on the 30th of October though this may be delayed because of weather conditions or operational requirements. The expected duration of the works is 1 week (weather permitting, therefore there may be the potential for an extension to the work duration). The survey work will be conducted from the Offshore Supply vessel MV Olympic Artemis Call Sign: LAFV8

Survey Tasks

  • A remotely operated vehicle (ROV) will be deployed over the side of the vessel and survey will be executed within the boundaries of the export cable corridor.
  • During the survey campaign the vessel will be deploying a ROV. During such times the survey vessels will have restricted ability to manoeuvre and therefore all other vessels are requested to fully comply with COLREGS obligations in respect of this.
  • As a consequence of the survey equipment deployed and the modes of operation all mariners are advised to keep a safe clearance of no less than 500m aft of the vessel.
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CSV Operations - Gryphon MWA-B & G Remedial Works

The Maersk Forza (Call Sign: MAIF5) will be carrying IRM (Inspection, Repair & Maintenance) operations within the Gryphon FPSO area, between: 19th Sept to 21st Oct 2020 - work extended to 1st November 2020

The Maersk Forza (Call Sign: MAIF5) will be carrying IRM (Inspection, Repair & Maintenance) operations within the Gryphon FPSO area, between:  19th Sept to 21st Oct 2020 - work extended to 1st November 2020

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Met Mast Decluttering and Survey - Moray Offshore Windfarm (East)

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) will be carrying out some De Cluttering and survey works on the Met Mast using support vessel Windcat 6 from the 23rd of October with expected completion being 29th of October

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Survey - 30km off the Coast of Ramsgate

Pole mounted multibeam echo-sounder survey of a subsea cable, approximately 30km of off the Coast of Ramsgate.

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Survey - Gwynt y Môr Windfarm

Benthic survey work is due to be carried out to the south and west of Gwynt y Môr Offshore windfarm during November 2020.

The vessel Aquatech Surveyor is due to undertake benthic drop down camera and Day grap survey for scientific monitoring purposes to the south and west of the Gwynt y Môr offshore windfarm.  The location of the survey work is shown in the Notice to Mariners.

 

Survey operations started during September 2020.  Work has paused to allow time for vessel maintenance and will resume in early-mid November 2020.  There will be approximately 5 days at sea, weather dependent.

 

The vessel will operate on a 24 hour basis from Holyhead in North Wales.  Survey operations will be limited to daylight hours with the vessel anchoring inshore overnight.

 

During the survey operations the vessel will be restricted in the ability to manoeuvre.

 

The vessel will remain on each survey station location for a period of approximately 15 minutes.  Umbilical cable may potentially trail from the vessel by up to 25m during deployment, depending on tidal conditions.

 

Other vessels are requested to keep well clear and pass slowly with a wide berth.

The survey vessel will monitor VHF Channel 16 at all times.

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Survey - Eastern HVDC Cable Torness to Hawthorn Pit

SSEN, National Grid and ST has contracted Fugro GM Marine Limited to carry out a Geophysical and Geotechnical site investigation located between Torness and Hawthorn Pit, United Kingdom, in the southern North Sea for the proposed Eastern HVDC Link site.

Scottish & Southern Electricity Networks Transmission (SSEN) as the Transmission Owner (TO) for northern Scotland, SP Transmission plc (SPT) as the TO for the central belt and south of Scotland, and National Grid Electricity Transmission plc (‘National Grid’) as the TO for England and Wales, are working together to develop the two links.

 

The Torness to Hawthorn Pit link will be jointly developed by SPT and National Grid. The link between Peterhead and Drax will be jointly developed by SSEN and National Grid. SSEN, National Grid and ST has contracted Fugro GM Marine Limited (Fugro) to carry out a Geophysical and Geotechnical site investigation located between Torness and Hawthorn Pit, United Kingdom, in the southern North Sea for the proposed Eastern HVDC Link site.

 

This Notice to Mariners will be updated and reissued periodically as additional vessels are planned to come on site. For operations in 2020, current planning indicates a total of 3 vessels being on site between the period 21st October 2020 and early December 2020. It should be noted these dates are subject to change and the total number of vessels could increase. Brown & May Marine (BMM) will distribute updated revisions of this notice as early possible before any additional vessels arrive on site. 

 

Offshore Geophysical Survey - (>15m LAT)  Fugro Venturer Call Sign: C6CG3

Offshore Geophysical operations at the Eastern HVDC Link site are expected to be carried out from the Fugro Venturer from the 21st October for approximately 5-6 weeks. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

 

As the Fugro Venturer will be towing survey equipment the vessel will require large turning circles therefore it is requested that all vessels operating within this area keep their distance, maintaining at least the 1,000 m exclusion including in the survey area buffer (coordinates above), and pass at minimum speed to reduce vessel wash.

 

Survey operations will be conducted on a 24 hour basis.

 

Nearshore Geophysical Survey - (3-15m LAT)  Fugro Valkyrie Call Sign: 2BWA9

Nearshore Geophysical operations at the Eastern HVDC Link site are expected to be carried out from the Fugro Valkyrie from the 22nd October for approximately 6-7 weeks. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress. It is expected that works will commence at Torness with subsequent transit to Hawthorn Pit.

 

As the Fugro Valkyrie will be towing survey equipment the vessel will require large turning circles therefore it is requested that all vessels operating within this area keep their distance, maintaining at least the 500 m exclusion including in the survey area buffer (coordinates above), and pass at minimum speed to reduce vessel wash.

 

Survey operations will be conducted on a daylight only basis (06:00 – 18:00).

 

 

Offshore Geotechnical Survey - (>15m LAT)  Fugro Venturer Call Sign: C6CG3

Offshore Geotechnical operations at the Eastern HVDC Link site are expected to be carried out from the Fugro Venturer from the 8th November for approximately 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 Venturer will be towing survey equipment the vessel will require large turning circles therefore it is requested that all vessels operating within this area keep their distance, maintaining at least the 1,000 m exclusion including in the survey area buffer (coordinates above), and pass at minimum speed to reduce vessel wash.

 

Nearshore Geotechnical Survey - (3-15m LAT)  Coastal Chariot Call Sign: PCWZ

Nearshore Geotechnical operations at the Eastern HVDC Link site are expected to be carried out from the Coastal Chariot from the 28th October for approximately 2 weeks however this survey. Please note that the exact start and finish date will be dependent on the prevailing weather conditions and work progress.

 

Survey operations will be conducted on a daylight only basis (06:00 – 18:00).

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Surface laid cable - Havhingsten, Eastern Irish Sea

Prior to rock placement there is a maximum of 50m of cable surface laid at a cable crossing. It is advised that extra care is taken when vessels are operating near this area and that no vessel should trawl within 250m.

Please be advised that, installation of the Havhingsten fibre optic telecommunication cable system is almost complete in the Eastern Irish Sea.

 

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

 

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

 

The cable route for the eastern Irish Sea region (UK Northwest and Isle of Man) is shown below.

 

Installation was via industry standard burial tools including water jetting and ploughing. Cable burial has been performed to a target of 1.5m.

 

The Havhingsten cable crosses 2 pipelines within the Eastern Irish Sea, 1 of which will require external rock protection (Western HVDC link). Post-rock installation is now expected in March 2021. The cable crossing is located approximately 50km offshore.

 

Prior to rock placement there is a maximum of 25m of cable surface laid with Uraduct protection either side of the crossing. Coordinates of the crossing are provided in the table below. It is advised that extra care is taken when vessels are operating near the area and that no vessel should trawl within 250m from the listed coordinates.

Crossing

Approximate distance offshore (km)

Latitude

Longitude

Western HVDC Link

50

53°45.9867’ N

003°48.9137’ W

 

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Abandoned Well - 30/12d-11

This wellhead has been removed from the seabed.

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Survey - Planned Cable Route English Channel

EGS (International) Ltd is continuing geophysical surveys of a planned cable route across the English Channel this summer, using our offshore survey vessels ‘EGS Pioneer’ Call Sign: 2EGS9 & EGS Echo Call Sign: MERD8

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 2-5 day period at each end. The French nearshore section is currently being surveyed and has been extended to late October. Following this the vessel will transit to the English side and perform surveys off Brighton, which will continue through to early November. 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 and will require vessels to stay well away for safety (1nm+)

The initial survey corridor is 600m along the route and then this will be repeated, but with a corridor width of 200m (UXO survey). Survey Route: The general course of the route runs between Brighton, England and Dieppe, France. EGS ECHO.

 

Sampling: In addition to the main geophysical and UXO survey EGS Echo will be collecting some supplementary seabed samples, using a small van-Veen type grab. These will be collected within the 500m survey corridor, at a nominal spacing of 500m. The exact locations will be selected after review of the survey results, but will also avoid; rocky areas, obstacles, fishing gear etc.

 

 

EGS Pioneer Call Sign: 2EGS9

This survey is likely to continue over a 2-3-week period, starting around 20th October, and is scheduled to complete by the end of October to beginning of November, depending on weather conditions. The vessel will be operating on a 24-hour watch basis and will display appropriate day shapes and lights during survey operations, maintaining a listening watch VHF CH16, with AIS transmission.

The survey equipment will include subsea towed systems and the vessel will be surveying at a speed of approximately 3-4 knots. EGS Pioneer 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. The vessel will be working within a survey corridor of approximately 200m width along the route.

 

Survey Route: The general course of the route runs between Brighton, England and Dieppe, France. EGS Pioneer will be surveying on the French section at the start of the survey period and this will be completed before commencing work in the English sector.

 

Estimated survey dates for French sector: 19th Oct to 26th Oct Estimated survey dates for English Sector: 26th Oct to 9th Nov

 

 

 

 

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Soil plug removal operations - Moray East Offshore Windfarm

Please be advised that SPR operations will commence using the Boa Sub C , Atlantic Tonjer and Normand Energy ,Boa Sub C will also commence grouting ops 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, atlantic Tonger and Normand Energy 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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Rock Bag Placement & Boulder Clearance - Moray Offshore Windfarm (East)

Rock bag placement and boulder clearance operations at OSP1, OSP3 and Met Mast

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to carry out Rock bag placement at OSP1 and OSP2. Following this they will commence boulder clearance operations with orange peel type grab at 53 WTG locations and the Offshore Met Mast. Expected duration of works is between 18-35 days, depending on weather, commencing circa 11/09/2020

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Subsea power cable - laying and trenching operations - Moray Offshore Windfarm (East)

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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ADCP deployment on the seabed - Loch Carron

Deployment of Scientific Acoustic Doppler Current Profiler on the seabed with no surface markers

We intend to deploy a scientific acoustic doppler current profiler on the seabed in outer Loch Carron, with no surface markers.

 

Location: 57°21.43'N  005°40.41'W

Water depth around 50 m

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Dropped Object - Hornsea Two Offshore Wind Farm

Noise monitoring frame(steel 1m3 frame approx. 40kg), hydrophone,riser buoy,clumped(100kg chain clump weight) & 50m Dyneema riser line(dia.~25 mm)remain after the riser line was severed below the surface buoy.Surface marker buoy and pellet buoy recovered.

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

 

Possible risk of entanglement from remaining riser line.

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Anchor Weight Chain 800kg - East Anglia One

There is most likely an anchor weight remaining on site. This is a bundle of approx. 800kg scrap anchor chain. Dimensions of object: Wave buoy mooring consisting: Anchor chain bundle: approx. 1.5 m x 2 m x 1 m

There is likely <0.5m presence of the anchor at the seabed so no risk to navigation is perceived.

 

There is a small potential for entanglement with fishing gear should trawling be undertaken in the area should equipment remain on seabed surface. No navigational risks are perceived.

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Removal of mattresses and grout bags - TAQA UMC P8 Well

2 concrete mattresses and 4 x grout bags were temporarily deposited next to the UMC well P8 (Block 211/26a) in 2019 to support abandonment operations. The DeepVision will be returning to the field to retrieve the deposited material in November

The matresses and grout bags were deposited within 500m of the primary location 61° 09 43.884 N, 1° 06’ 39.952 E. This operation is part of a larger campaign so the exact date the vessel will be on location is unknown at present but it will be during the month of November 

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Rig - COSL Promoter

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Wet stored riser sections - Huntington Field

Sections of four flexible risers and one dynamic umbilical are wet stored (and pose a risk to fishermen) for a short period of time in the Huntington field, within the 200m radius area of the following location: 57° 36' 56.01" N 01° 38' 27.77" E

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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

GV Replenish

MASY7

As above

As above

1st May 2019 for approximately 34 months

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

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 2 months

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

 

     

Windcat 6

MXFD

As above As above from September 23rd 2020 onwards

GXS Viking

2EKH5

As above As above 14 th August 2020 for a year

GV Kinnaird 

GHNE

As above

As above

from 16th July 2020 onwards

 

     

GMS Endeavour

3UG6

As above As above 20th August 2020 onwards

Atlantic Tonjer

HOHO

As above As above 23rd September 2020 onwards

Normand Energy

MBEN9

As above As above 23rd September 2020 onwards
Maersk Connector As above As above 23rd September 2020 onwards
World Scirocco As above As above 1st October 2020 onwards
Living Stone As above As above 1st October 2020 onwards
Deep Cygnus As above As above 1st October 2020 onwards
Aquata As above As above 22nd August 2020 onwards
Havila Phoenix As above As above 22nd August 2020 onwards

Windcat 17

2BYD5

As above As above from July 23rd 2020 onwards
Viking As above As above from August 23rd 2020 onwards

 

 

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Havhingsten Cable Project - North Sea

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

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

 

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

 

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

 

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

 

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

 

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

 

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

Crossing

Approximate distance offshore (km)

Latitude

Longitude

CATS

72

55°15.8028’ N

000°21.9318’ W

Norpipe

113

55° 19.1679’ N

000° 16.0266’ E

Sleipner to Easington

140

55° 22.3375’ N

000° 40.9323’ E

Shearwater to Bacton

198

55° 30.7194’ N

001° 34.1236’ E

 

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Deployment of Buoy - Blyth Met Mast

Deployment of a SeaWatch LiDAR Buoy (SWLB); this is a sea state measurement instrument.

The equipment will be deployed close to the Blyth Met Mast as part of a validation study within the existing met mast 250 m consent zone and will be deployed for approximately one month.

 

The equipment will be moored through a combination of steel chains, rope and rubber cord to approximately 2250 kg anchor weight at the seabed.

 

The equipment is equipped with a F1 (5) Y 20 s light with 4-5 nautical mile range; the light is mounted at the top of one of the masts, approximately 4 m above sea level.

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Leman 27B & ERDA Combined Operations Activity

Combined Operations between Perenco Leman 27B Installation and Petrodec ERDA rig

Please be advised that the ERDA Jack-up Barge is due to depart from Sagro Yard, Vlissingen in the Netherlands on 25th October 2020, at the earliest (dependent on weather) and transit to the Leman field where it will commence project work at the Leman 27B platform (removal of redundant equipment and lifting a pigging module onto the 27BT platform). The ERDA is expected to arrive at the field 26th October 2020 (earliest) with the work scope predicted to take 42 days (excluding weather downtime).

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Seagull and ETAP Works (Umbilical Readiness Works)

Vessel Norman Mermaid will be carrying out general works at Seagull field, ETAP and the planned umbilical route between them along with mattress deposits at Egret location.

Vessel Norman Mermaid will be carrying out:

 

- Debris survey at Seagull

- Seagull to ETAP boulder removal ops along the planned umbilical route

- Mattressing ops at Seagull and Egret

 

Etap Field – Platform PDR - 57Ëš 17’ 40.02"N, 01Ëš 39’ 41.28"E   

Seagull Field - Manifold -  57Ëš 09’ 10.93"N , 01Ëš 40’ 24.72"E 

Egret location-  57Ëš 10' 21.66"N,  01Ëš 44" 40.64E

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Survey - Glengorm South Appraisal Well VSP (Ref: 1134)

A 2 day Geological Glengorm South Appraisal Well VSP from the drilling Rig from 16th November 2020 until 30th November 2020.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

CNOOC Petroleum Europe Limited

N/A

2m

5m

16/11/2020 - 30/11/2020

For 2 Days

22

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Survey - Culzean (Ref: 1140)

A 1 day Geological Survey at the Culzean Well

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Total E&P North

TBA

2m

5m

12/10/2020 - 31/12/2020

For 1 Day

22/23

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Survey - Pre-decommissioning at the Galahad Platform (Ref: 1141)

A Pre-decommissioning survey at the Galahad Platform from around 15 October to 31 December 2020 for 1 Day. Vessel:TBC

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Perenco UK Limited

TBC

N/A

15/10/2020 - 31/10/2020

For 2.5 Day

48

 

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Survey - Pre-decommissioning at the Bessemer Platform (Ref: 1137)

A Pre-decommissioning survey at the Bessemer Platform from around 18 October to 31 December 2020 for 1 Day. Vessel:TBC

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Perenco UK Limited

TBA

N/A

15/10/2020 - 31/10/2020

For 1 Day

49

 

This is a seab

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Survey - Grove Platform Area (Ref: 1153)

A side scan sonar survey around the Grove Platform Area from around 18 October to 31 December 2020 for 1 Day. Vessel: Fugro Searcher (3EUY6).

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Fugro GB (North) Marine Ltd

Fugro Searcher

3EUY6

N/A

13/10/2020 - 31/10/2020

For 1 Day

49

 

This is a seabed survey in the Grove Platform area, using sidescan sonar and multibeam echosounder and encompassing up to 3 small areas within a 2.5km x 5km overall survey area

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Dropped Anchor - Gwynt y Mor Offshore Wind Farm

The original anchor consisting of approximately 350kg of scrap chain at the previously as laid position:53°28.615 N 003°30.192 W could not be recovered and remains on the sea bed.

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Deployment of Buoy - Project Erebus Floating Offshore Wind Farm

The Project Erebus Wave Buoy had broken free of its mooring but was successfully recovered in the evening of the 21.09.20. The Wave Buoy is to be redeployed at a different location than its original deployment.

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 - Berwick Bank Wind Farm and Marr Bank Wind Farm

SSE Renewables will be undertaking a subtidal benthic survey of the Berwick Bank Wind Farm and Marr Bank Wind Farm areas, and cable routes.The survey will be within the proposed Berwick Bank and Marr Bank wind farm site boundaries and export cable routes.

The survey work is being undertaken by Ocean Ecology and will be conducted from the Marshall Art Call Sign: 2HWN3 and Seren Las Call Sign: MDAH2 vessels.

 

Survey Tasks The survey is to be split into 2 distinct areas using the offshore survey vessels: 1. Survey work covering the Berwick Bank Wind Farm and Marr Bank Wind Farm areas and the cable route further offshore in deeper water will be undertaken by the Marshall Art and will likely take approx. 10 days to complete (24hr operations possible) 2. Survey work covering the cable routes closer to shore in shallower waters will be undertaken by the Seren Las and will likely take 10 days to complete (12hr operations only)

During the survey campaign, the vessels will be deploying underwater equipment in order to gather data on the ecology of the seabed. These include grab sampling, drop down camera work and scientific beam trawls. However, despite equipment being deployed and the modes of operation, SSE Renewables are not requesting a 500m clearance at this time. The vessels will be generally unrestricted in their movements and will adhere to normal navigation protocol.

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Abandoned Well - 211/19-2

This wellhead has been removed from the seabed.

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Dropped Anchor Weight and Mooring

Anchor weight and mooring from lidar buoy, composed of approx 2250 kg scrap anchor chain, 19mm chain, 20 mm dyneema rope. Dimensions of object: Approx. 2.5 m2 (w) and 1 m height.

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Exposed Cable - Beatrice Offshore Windfarm

Rock Replacement Operations on 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. Vessel MV Olympic Artemis Call sign: LAFV8. Work Commencement date TBC.

ROn behalf of Beatrice Offshore Windfarm Ltd, MV Olympic Artemis Call sign: LAFV8 will deploy rock bags over a four-metre section of exposed export cable.

 

Work Commencement date TBC.

 

During this operation the MV Olympic Artemis will be restricted in its ability to manoeuvre and will be displaying the appropriate lights and day signals. All vessels are there for requested to give a wide berth when passing.

 

At present the MFV Reaper is acting as a guard vessel at this location, further information is available in previously issued Beatrice notice to mariners NTM-BE-00005 - Export Cable Guard Vessel. MFV Reaper will remain on location throughout operations until the partial exposure has been proven to be satisfactorily covered.

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Pipeline Flushing and Riser Decommissioning (Huntington Field)

Premier Oil’s project to flush & disconnect the Huntington field subsea infrastructure and removal of associated risers in relation to the float-off of the Voyager Spirit FPSO will be undertaken between 11th April and 31st December 2020

The flushing, disconnecting and riser cutting scopes are now completed.

 

The (Altera operated) Voyageur Spirit FPSO left the Huntington field on 27th July.

 

The risers will be recovered between 14th and 31st October by the Siem Spearfish.

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Trawl Sweep at Renee Well 15/27-8 (Seabed Clearance)

The MV "Ocean Trust" FR152 has completed a 1 day trawl sweep operation over the Renee Well 15/27-8. No significant debris was recovered and there was no damage to the gear.

 On 12 October 2020, an area of 1,000m2 was ‘swept’, centred on the well, at a water depth of approx. 144 metres.

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Survey - Fram Field (Ref: 1114)

A side scan sonar survey around the Banff & Starling fields from around 13 to 31 October 2020. Vessel: Cecilia (OZ2157).

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
CGG Services (UK) Limited

Cecilia

OZ2157

N/A

13/10/2020 - 31/10/2020

For 18 Days

29

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Rig - Prospector 1

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Endurance Site Survey

Geophysical site survey over the Endurance area including towed seismic, shallow geotechnical CPTs and environmental sampling.

Concentrating on two survey areas for towed Geophysical survey (approx 7 days) before undertaking a small scope of shallow geotechnical CPTs and Environmental Sampling (approx 5 days).

Vessel - Ocean Reliance

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Rig - COSL Pioneer

Two Anchor handling vessels will arrive in the Buzzard field on 21st Sept '20. They will detach the COSL Pioneer from its anchors and then recover the pre-laid anchor spread. A vessel will retrieve a pull in wire and 4 x gravity bases 13th - 15th Oct '20.

The Anchor Handling Vessels departed the field on 22nd September 2020.

 

The COSL Pioneer left the field on 22nd September 2020

 

A construction vessel will arrive in the Buzzard field between 13th and 15th October to recover a pull in wire, and 4 x gravity bases. 

 

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Survey - Bessemer Pre-Decommissioning Survey

Perenco UK Limited plan to complete a pre-decommissioning survey of the Bessemer platform (UKCS block 49/23), utilising the Noordhoek Pathfinder. The survey is due to commence 13th October 2020 (at the earliest) with an expected duration of 1 day.

The pre-decommissioning surevy of the Perenco platform Bessemer (UKCS block 49/23) will consist of side scan sonar, multi beam echo sounder, passive magnetometer within the 1km x 1km surevy area around the platform.

 

The survey is planned to commence on 13th October 2020 (at the earliest) with an estimated duration of 1 day.

 

The survey will be completed using N-Sea's multi purpose vessel the Noordhoek Pathfinder.

 

Please note - upon completion of the platform survey the Noordhoek Pathfinder will continue with a suite of Perenco surveys. The expected duration of the survey suite is 13 days, with a latest end date of 13th November 2020.

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Survey - Galahad Pre-Decommissioning Survey

Perenco UK Limited plan to complete a pre-decommissioning survey of the Galahad platform (UKCS block 48/12), utilising the Noordhoek Pathfinder. The survey is due to commence 13th October 2020 (at the earliest) with an expected duration of 1 day.

The pre-decommissioning surevy of the Perenco platform Galahad (UKCS block 48/12) will consist of side scan sonar, multi beam echo sounder, passive magnetometer and environmental grab samples within the 1km x 1km surevy area around the platform.

 

The survey is planned to commence on 13th October 2020 (at the earliest) with an estimated duration of 1 day.

 

The survey will be completed using N-Sea's multi purpose vessel the Noordhoek Pathfinder.

 

Please note - upon completion of the platform survey the Noordhoek Pathfinder will continue with a suite of Perenco surveys. The expected duration of the survey suite is 13 days, with a atest end date of 13th November 2020.

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Telecom Marine Route Survey - West Coast Ireland

EGS (Asia) Ltd will be performing a geophysical survey of a planned cable route with Irish territorial waters, west of Galway. The survey will be conducted by vessel RV Ridley Thomas, call sign V7 JK2, from early September to end October 2020.

Please be avised that the R.V. Ridley Thomas, IMO 8112744, will be conducting telecommunication cable survey activities for an undersea fibre optic communications cable within Irish territorial waters, west of Galway, from around 10th September to end October 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 0.5 nm on either side at the locations and during the periods noted 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 a stern deployment of a sonar towfish tethered with steel cable at varying water depths to collect geophysical/bathymetric mapping data for the proposed undersea telecommunications cable. Towfish towing wire layback will be 3x water depth beind the vessel stern. The maximum depth of tow operations will be 1500 metres. The sonar sensor will be towed approximately 20-40 metres from the seafloor. The survey corridor is 1000 metres centred on the survey centreline. Operations in water depths greater than 1500 metres will utilise hull mounted equipment only.

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Scientific equipment mooring recovery and service works, Moray Firth.

Completed recovery and proposed service of seabed equipment moorings in the Moray Firth by the University of Aberdeen.

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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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Catcher North and Laverda Safety Zone

The Catcher North and Laverda Safety zone is now live.

The Catcher North and Laverda Safety zone (Catcher North and Laverda Subsea Installation, Block 28/9a, Catcher North and Laverda Field) issued in Statutory Instrument No. 390 of 2020 - The Offshore Installations (Safety Zones) Order 2020 is now live/in force.

 

This safety zone has a radius of 500 metres from the specified position: 56°48.927’N 00°44.087’E

 

https://www.legislation.gov.uk/uksi/2020/390/pdfs/uksi_20200390_en.pdf

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Abandoned Well - 15/22-16

This wellhead has been removed from the seabed.

The Wellhead has been cut ~11ft below seabed. An explosive charge was subsequently used to free the wellhead for recovery. A seabed clearance survey has been completed to a radius of 100m via ROV and the seabed has been confirmed to be clear and reinstated. A seabed Clearance Certificate has been issued.

 

Contrary to the original plan, the wellhead has not been recovered. Following a successful controlled explosive severance detonation it is probable that the stump has relocated into  a void that was created during the detonation at the cutting depth below the seabed surface, that was big enough to swallow the length of cut casing. The subsequent 100 metre radius ROV search of the well area failed to identify any presence of the wellhead, hence the operation was terminated without wellhead recovery, and the abandonment is considered complete.

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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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Survey - Marine Survey (Ref: 1149)

A 20 day Marine Survey vessels: Skandi Carla Call Sign: C6RX4, Edda Sun Call Sign: LARF7 from 10th October 2020 until 30th November 2020.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro Survey

Limited

Skandi Carla

C6RX4

Edda Sun

LARF7

N/A

10/10/2020 - 30/11/2020

For 20 Days

52, 48

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Survey - Everest LAD Well & Route Survey (Ref: 1148)

A 10 day Everest LAD Well & Route Survey vessel Fugro Galaxy Call Sign: C6YY4 from 23 October 2020 until 30th November 2020

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro (GB (North)

Marine Limited

Fugro Galaxy

C6YY4

1500m

3m

23/10/2020 - 30/11/2020

For 10 Days

22

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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 will commence operations at Triton Knoll Offshore Wind Farm

Vessel Name

Type

Call Sign

MMSI

IMO

Operating Port

Commence Date

HBC Achiever Diving Support Vessel OWMH2 219305000 9647978 Grimsby 01/10/2020

 

Operating predominantly within the Triton Knoll Offshore Wind Farm Array.  Activities include, Inter Array Cable Installation and Burial, Crew Transfer Operations, Guard Vessel Operations, Demarcation Buoyage Maintenance, Commissioning of Offshore Sub Stations, Rock Placement & 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

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

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
Afon Wen Buoy Maintenance Vessel 5BRK2 209945000 9473652 Hull 01/03/2020

Dalby Don

Crew Transfer Vessel

2IMZ6

235111112

N/A

Grimsby

18/02/2020

MCS Sirocco Crew Transfer Vessel 2FFP4 235090843 9643746 Grimsby 15/09/2020
Seacat Magic Crew Transfer Vessel 2JDI2 235114973 n/a Grimsby 24/09/2020

 

Vessels operating within both Triton Knoll Offshore Wind Farm Export Cable Route.  Activities include Guard Vessel Duties & Rock Placement.

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

Rockpiper Rock Placement Vessel 5BML3 209449000 9583861 Jelsa 08/10/2020
 

*** 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

017/2020 - 18th September 2020

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Survey - Seismic Infill Survey (Ref: 1128)

A 15 day Seismic Survey Central North Sea.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

CGG Service (UK) Limited

SW Amundsen 5BXE2

8000m

15m

22/08/2020 - 31/10/2020

For 15 Days

15,16,21,22

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Cable Installation - Havhingsten (Irish Sea)

The installation of the Havhingsten fibre optic telecommunication cable system has been granted marine licences and installation of the offshore section is expected to start on or around Friday 9 October 2020 in the Irish Sea.

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.

 

Planned durations of works within the Territorial Sea limit (0-12 nm) are as per below (exclusive of weather):

 

Area Pre-Lay Grapnel Run Installation Post-Lay Inspection & Burial
UK West TW 29 September 30 sept - 1 Oct 3 - 11 October
UK West TW (inshore of 15m water depth) 30 September 30 Sept - 1 Oct 3 - 11 October
UK West TW (inshore of 15m water depth) 18 - 19 September 7 - 12 October 28 - 29 November

 

Planned durations of works offshore (12-200nm) are as per below (exclusive of weather):

 

Area Pre-Lay Grapnel Run Installation Post-Lay Inspection & Burial Post-Rock Placement
UK West EEZ 17 - 18 September 7 Oct - 12 Oct 29 - 30 November March 2021
UK West EEZ 18 -19 September 12 Oct - 18 Oct 30 Nov  - 1 Dec N/A

 

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.

 

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.

 

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: Nora B (Grapnel Run) Call Sign: PDKG                                                        

Length Overall:                                36m

Breadth:                                            15m     

 

Cable Installation Vessel: Ile de Brehat Call Sign: FOUC  (Known as Ile de Class)                                         

Length Overall:                                140.36m

Breadth:                                            23.40m 

                   

Cable Installation Support Vessel: Ile d’Aix Call Sign: PDKG                                                                                                      

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

Length Overall:                                151.54 m

Breadth:                                            21.60 m

 

Bravenes (Rock Placement

Vessel)   Call Sign: PDCF                                                                                                   

 

Length Overall:                                167 m

Breadth:                                            26 m

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Cable Installation - Havhingsten (North Sea)

Please be advised that, installation of the Havhingsten fibre optic telecommunication cable system is planned to commence from mid-September onwards. Further details below.

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.

 

Expected speed of installation will be 17 km per day.

 

Planned durations of works are as per below:

 

Planned timings of works within the Territorial Sea limit (0-12 nm) are as per below (exclusive of weather):

 

Area

Block no.

Pre-Lay Grapnel Run

Installation

UK East (TS)

2

Completed

30 Sep – 2 Oct

UK East (TS)

1

Completed

30 Sep – 2 Oct

 

 

Planned durations of works offshore (12-200nm) are as per below (exclusive of weather):

 

Area

Block no.

Pre-rock placement

PLGR

Installation

PLIB

Post-rock placement

UK East (EEZ)

6

NA

Completed

Completed

NA

NA

UK East (EEZ)

5

NA

Completed

Completed

NA

NA

UK East (EEZ)

4

Completed

Completed

Completed

29 Sep – 4 Oct

March 2021

UK East (EEZ)

3

NA

Completed

Completed

4 -6 October

March 2021

UK East (EEZ)

2

Completed

Completed

23 - 26 September

30 Sep – 2 Oct

March 2021

UK East (EEZ)

1

NA

Completed

26 - 30 September

NA

March 2021

 

 

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

 

Bravenes (Rock Placement Vessel)                                                                                                             

DP Type

Length Overall:                                155 m

Breadth:                                            28 m

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Triton Knoll OWF - Movement of Demarcation Buoys

Please be advised that demarcation buoys TK10 and TK12 located at the Triton Knoll Offshore Wind Farm construction site have moved slightly from their previous location.

Mariners are advised that the following demarcation buoys outlining the Triton Knoll construction site have moved location as outlined below

TK10 Special mark – has moved south approximately 150 metres from original location. TK12 East Cardinal – has moved south approximately 100metres from the original location.

 

Buoy Type Designation Characteristics Original Position New Position
Special Mark TK10 Fl.Y.5s 53°29’.60N 000°55’.31E 53°29’.51N 000°55’.31E
East Cardinal TK12 Q(3) 10s 53°24’.37N 001°00’.23E 53°24’.31N 001°00’.23E

 

Mariners are advised to avoid entering these areas at all times. For up to date information please contact Guard Vessel Sorrento VHF Ch16 & VHF Ch10. Triton Knoll Marine Coordination Centre can be contacted by phone or Email on the below details for further information.

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Survey - Galleon PN Debris Survey (Ref: 1143)

A 3 day Galleon PN Debris & Environmental Survey from 30 September 2020 until 30 December 2020. Vessel: Fugro Searcher Call Sign: C6EIF.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro GB (North)

Marine Limited

M.V Fugro Searcher

C6EIF

N/A

30/09/2020 - 30/12/2020

For 3 Days

48

 

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Survey - Pipeline Survey PL1166, PL1167 (Ref: 1142)

A 1 day Pipeline Survey PL1166, PL1167 from 15 September 2020 until 31 December 2020.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Perenco TBA

N/A

15/09/2020 - 31/12/2020

For 1 Day

48

 

 

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Survey - Rubie and Rennie (Ref: 1133)

A 5 day survey around Rubie and Rennie from 19 September 2020 until 31 October 2021]. Vessel: Fugro Venturer Call Sign: C6CG3.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Fugro

Fugro Venturer

C6CG3

N/A

19/09/2020 - 31/10/2020

For 5 Days

15

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Rhum 3 (R3) Well Intervention

Serica Energy is completing a well intervention operation at the Rhum R3 location in UK License Block 3/29, located in the Northern North Sea

Location Name:

Rhum R3

UK Licence Block:

3/29

Surface Co-ordinates (WGS84):

60° 06.962' N 001° 43.337' E

Start Date:

Approx. 8th October 2020

Duration:

Approx. 80 Days

Rig Name:

WilPhoenix

ERRV:

Esvagt Sigma

Safety Zone:

500 metre radius

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Survey - Brodick Development Route Survey (Ref: 1136)

A 7 day survey around the Brodick Dvelopment from 11 October 2020 until 31 January 2021. Vessel: Ocean Reliance Call Sign: HP6391.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Gardline Limited

Ocean Reliance

HP6391

3m

3m

11/10/2020 - 31/01/2021

For 7 Days

15

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Rig - Ocean Endeavour

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Brodick Well Rig Site Survey (Ref: 1135)

A 7 day survey around the Brodick Well from 11 October 2020 until 31 January 2021. Vessel: Ocean Reliance Call Sign: HP6391.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Gardline Limited

Ocean Reliance

HP6391

3m

3m

11/10/2020 - 31/01/2021

For 7 Days

15

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Scientific Moorings (Moray Firth)

The University of Aberdeen has removed moorings. Mariners should also note that the University of Aberdeen has serviced and reinstalled in their existing locations moorings and equipment.

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Cardinal Buoys - Banff Field

Two cardinal buoys and one marker buoy will be installed at the Banff Field during late September when surface vessels have demobilised to mark subsea infrastructure. The installation is expected to take two days.

The buoys will be installed by anchor handling tug (AHT) as part of other field operations.

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Deployment of Buoy - East of Lunna Ness, Taing of Kelswick

Deployment of a current meter mounted in a frame on the seabed at a depth of 50m, connected via leaded groundline to an anchored surface buoy 75m WSW of the instrument. Deployment Start 22nd July Deployment End November 2020.

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Deployment of Buoy - Hildasay, nr.Scalloway, Shetland

Deployment of a current meter mounted in a frame on the seabed at a depth of 50m, connected via leaded groundline to an anchored surface buoy 75m NW of the instrument. Deployment Start 22nd July Deployment End November 2020.

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Deployment of Buoy - Flotta, Weisdale Voe, Shetland

Deployment of a current meter mounted in a frame on the seabed at a depth of 50m, connected via leaded groundline to an anchored surface buoy 50m East of the instrument. Deployment Start 22nd July Deployment End November 2020.

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Deployment of Buoy - Brei Geo Offshore, Sandsound Voe, Shetland

Deployment of a current meter mounted in a frame on the seabed at a depth of 37m, connected via leaded ground line to an anchored surface buoy 50m SW of the instrument. Deployment Start 25th September. Deployment End January 2021.

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Seagreen Offshore Windfarm, Seabed Obstruction

During survey operations a survey rod has been left protruding 1.8m from the seabed in position 56-35.909N 001-45.607W, this object constitutes a hazard to fishing vessels.

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Dropped Boulders (~3 tonnes each)

These are the reported positions of the 15 x ~3 tonne boulders that were dropped from the vessel 'Esperanza' on 21 September 2020 in the Dogger Bank area. It is estimated these may be laying ~1 metre above the seabed.

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Dropped Mattress - Shell 34" Pipeline

The 6th mattress for the Shell 34” pipeline will be recovered between 19th September - 17th October 2020 by the Grand Canyon III. The Fleximat dimensions are 6.4m x 3.0m x 0.5m Weight in Air 15860kg.

During overboarding of the 6th mattress for the Shell 34” pipeline, the crane wire parted when the matt was entering the splash zone at approx. 25m above seabed. The Fleximat dimensions are 6.4m x 3.0m x 0.5m Weight in Air 15860kg.

 

The mat was being overboarded 15m away from the 34” pipeline, the mattress and frame landed on the seabed 6m away from the 34” pipeline

  • Fleximat 6.4x3.0x0.5m 2.4 & 3.2te/m3 Concrete Mattress – Weight in Air 15860kg
  • Mattress Lift frame – 6.3x2.4m – Weight in Air 1.7te
  • Approx. 25m Crane wire
  • 0.5t Crane Block

25m Crane wire and 0.5te Crane Block safely recovered 13:50, 08/09/20.

 

Plan is to recover mattress but inspections into the current state of the mattress are required to determine a suitable recovery methodology.

 

A marine licence (ML/634) application has been submitted and approved by BEIS, this is valid from 19th September 2020 to 17th October 2020. A variation to this marine licence will be applied for in case the mattress and mattress frame cannot be recovered within this time. The mattress and mattress frame will be recovered by the Grand Canyon III offshore support vessel.

 

 

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Rig - JB-115

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - West Mira

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Eastern English Channel - Area 458/464, - Change of ADZ

Tarmac Marine Ltd. and Cemex UK Marine Ltd. have applied to the MMO to amend the active dredge zones for Area 458/464 West Bassurelle in the East Channel Region.

The changes are expected to come into effect after 22nd October 2020. 

 

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Rig - Transocean Equinox

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig Movement (Seafox 7)

The rig has moved to this location. Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.

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Export Cable Installation - Triton Knoll Offshore Wind Farm

Please be advised that 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.

 

During this period, the cable installation vessels 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.

 

The vessel 'Rockpiper' is expected on site on or around the 01st October 2020 to commence rock placement operations. Guard vessels 'Glomar Arctic' and 'Glomar Advantage' will be employed to support export cable installation operation.

 

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 all 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 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
Rockpiper Rock Placement Vessel 5BML3 209449000 9583861 Jelsa 01/10/2020

 

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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Buzzard Field - unconnected subsea infrastructure

Drilling activity in the Buzzard Field will cease for 2020 in September leaving 4 x Xmas Trees and 2 x wellhead conductors unconnected in the field until the subsequent subsea campaign in 2021. The locations are in the table below.

Subsea structure

Manifold Slot

Coordinates ED50

Protection structure

PN1

57° 50' 44.150" N

000° 54' 35.320" W

Xmas Tree

PN3

57° 50' 42.899" N

000° 54' 34.214" W

Protection structure

PN5

57° 50' 44.988" N

000° 54' 38.071" W

Xmas Tree

PN7

57° 50' 45.401" N

000° 54' 36.426" W

Xmas Tree

IN1

57° 50' 45.817" N

000° 54' 34.780" W

Xmas Tree

IN2

57° 50' 43.312" N

000° 54' 32.569" W

 

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Marine aggregate dredging activity - South Coast England

It is anticipated that dredging operations will commence in the MMO licensed Area 488 off the south coast of England from 1st October 2020.

Area 488 is located 5nm off the coast of Littlehampton and defined by the latitude and longitude co-ordinates below (WGS84):

 

50 42.0334 N   0 30.8317 W

50 42.0325 N   0 31.3748 W

50 42.1980 N   0 31.2169 W

50 42.2317 N   0 31.1413 W

50 42.2618 N   0 31.2347 W

50 42.4985 N   0 31.0181 W

50 42.4633 N   0 31.4369 W

50 42.6556 N   0 31.9618 W

50 42.7292 N   0 31.9870 W

50 42.7997 N   0 31.9113 W

50 42.9439 N   0 31.9366 W

50 43.0945 N   0 32.2444 W

50 43.1406 N   0 32.2665 W

50 43.1945 N   0 30.9726 W

50 42.6908 N   0 30.8112 W

50 42.5978 N   0 30.5286 W

50 42.0334 N   0 30.8317 W

 

As required by the Fisheries Code of Practice, Masters of Dredging vessels will call up on VHF Channel 16 when approaching the dredging area at a range of 10 nm (approximately 1 hour before operations are to commence) and will provide an estimated time of arrival on the area and position of operation. A VHF working channel will be established between the dredger and fishing vessel(s) if required.

 

For further information please contact Simon Luckett at Tarmac Marine Ltd on Tel: 01243 817234, Email: simon.luckett@tarmac.com

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Unprotected HVDC electric cable section

East of the “South Falls” in UK waters a section of the HVDC Interconnector Nemo Link is unprotected due to seabed mobility.

East of the “South Falls” in UK waters a section of the HVDC Interconnector Nemo Link is unprotected due to seabed mobility. All Mariners are asked to avoid this area and not perform bottom-disturbing activities including trawl fishing to prevent damage to the cable.

 

Location: South Falls

 

Id

Easting (UTM31-WGS84)

Northing (UTM31-WGS84)

Lon

Lat

1

415023,18

5686893,81

1° 46.822' E

51° 19.619' N

2

415149,81

5686888,91

1° 46.931' E

51° 19.617' N

3

415149,99

5686882,90

1° 46.931' E

51° 19.614' N

4

415022,61

5686887,83

1° 46.822' E

51° 19.616' N

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Accommodation - Offshore Substation Platforms Moray Offshore Windfarm (East)

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to deploy the Jack Up Vessel GMS Endeavour to Site 1. The vessel will supply accommodation for workers carrying out commissioning works on the offshore substations.

The vessel will be located next to the structures highlighted in the map commencing circa 20/08/2020 until further notice.

 

Vessel info:

Name: 3GSM Endevour

General description and dimensions: LOA: 84.1 m, Beam: 36 m, Draught 5.9m Call Sign: 3EUG6 MMSI: 370582000 On Board Contact: Master Offshore Manager / Party Chief: John Bromfield E-mail: endeavour.6102@fleet.gmsuae.com Onshore Representative: Andrew Small

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Deployment of Buoy - Neart na Gaoithe Offshore Wind Farm

Neart na Gaoithe Offshore Wind Farm Limited (NnGOWL) successfully deployed a Wave Rider Buoy (WRB) within the Wind Farm Area on 12th Sept 2020. The intention is that this buoy will remain in situ within the NnG Wind Farm site for up to 2 years (Sept 2022)

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Dropped Cylindrical Pipe

Material is smooth cylindrical pipe drill casing. Dimensions of object: 12.2m x 0.2m presumed to be laying horizontal / sub-horizontal on the sea bed. May present some ‘snagging’ risk to fishing gear or similar. Planned Recovery of Item.

Details of any radio Navigational Warnings and/or Notices to Mariner’s:

 

  • None as yet, but geotechnical spread remains at site and in a position to guard and notify as required.
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Rig Movement - Paul B Lloyd Junior

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.

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Inter Array Cable Installation Operations

Moray East are planning on carrying out the Inter Array cable installation on the Moray East Windfarm

Please be advised that Moray Offshore Windfarm (East) Limited (Moray East) are planning to carry out Inter Array cable installation works within the bounds of site 1 (see Figure 1 and Table 1). The cable pull ins and free lay of inter array cable between WTG’s will be carried out by the Living stone vessel along with WROV surveys once cable is installed. The Living stone will be supported by Grand Canyon She will be operating a walk to work system for personnel access to the WTG locations and transferring equipment to assist the cable pull ins. Both vessels will be supported by the Crew Transfer vessel World Scirocco, that will assist in personnel transfers to WTGs and carrying out crew changes for both vessels. The overall work scope will be carried out in 3 campaigns, the first campaign commencing circa the 24th of September 2020 and is expected to last 8 weeks. The following campaign commencement dates will be advised through further NtMs and in the Weekly Notice of Operations.

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Survey - Seagreen Offshore Windfarm

Seagreen Offshore Windfarm Ltd will conduct a geotechnical survey within the boundary of the Seagreen site.

A geotechnical survey will be conducted within the boundary of the Seagreen Offshore Windfarm site. The survey vessel, M/V Despina, will mobilise on or after the 18th of September 2020. Weather permitting, the survey is expected to conclude on or around the 30th of November 2020. The vessel will perfom various core penetration tests and vibro cores within the boundary of the site.

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Deployment of Buoy - South East of Horse Island

Deployment of ADCP and frame on seabed in a j-shaped mooring marked by one orange buoy. ADCP frame on the seabed 60 m from the buoy connected by a ground line at South East of Horse Island, Summer Isles.

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Rig - Transocean Spitsbergen

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig Movement - Deepsea Atlantic

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending hundreds of metres outside this zone.

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Rig - Maersk Invincible

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Ensco 92

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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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
56°02.740’N 02°21.208’W ECR_M_MAG_0708
56°17.788’N 02°16.833’W B_MAG_0200

 

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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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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.

 

The Boskalis will be temporarily wet storing a cable at the location provided on or around 9th September until 7th October 2020. A guard vessel will be present whilst the cable is being wet stored but it is advised that mariners maintain a safe clearance. Boskalis will be commencing trenching with the Boka Falcon on or around the 10th September to 12th October 2020.

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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 geophysical survey area. Note that the dates overlap, this is to account for potential delays caused by e.g. weather.

 

Survey Area Start Date End Date
D 15-09-2020 07-102020
C 02-10-2020 15-10-2020
B 10-10-2020 23-10-2020
A 17-10-2020 05-11-20202

 

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 - Loch Uiskevagh

The Scottish Salmon Company (SSC) will be carrying out a hydrographic survey in September in Loch Uiskevagh

Company Vessels Duration
Scottish Salmon Company 

Gille na Mara

MEEO6

03/09/2020 

For 110 Days

 

The deployment location will be marked by 1 yellow buoy, marked “survey”, and 1 orange buoy.

 

Mariners are requested to navigate with caution in this area.

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Survey - Loch Roag

The Scottish Salmon Company (SSC) will be carrying out a hydrographic survey in September in Loch Roag

Company Vessels Duration
Scottish Salmon Company 

Ribhinn

2EBH4

02/09/2020 

For 110 Days

 

The deployment location will be marked by 1 yellow buoy, marked “survey”, and 1 orange buoy.

 

Mariners are requested to navigate with caution in this area.

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Ninian North jacket

Top of Ninian North jacket 6m above sea level - no navaids or lights

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

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Survey - Debris Survey Ref:1130

A 13 day Debris Survey, expected to start 26 August 2020, vessel GEO Ocean III Call Sign: LXGP

Company Vessel

Towed Cable

Length & Depth

Duration Survey Block

Enquest Heather Ltd

GEO Ocean III

LXGP

 

8100m

8m

26/08/2020

For 13 Days

2/5
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Rig - Maersk Integrator

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Exposed Cable - Tampnet Fibre Optic Cable - Penguins (UK) - Snorre A (NOR)

Please be advised that the installation of the Tampnet fibre optic cable is still ongoing and that there is currently approximately 4.5km of EXPOSED CABLE on the seabed. We advise all seafarers and fishermen to keep clear of using any bottom equipment.

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

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Abandoned Well - 48/30-7

This wellhead has been removed from the seabed.

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Power Cable - Loch Etive

Power cable installed by Briggs Marine Contractors on behalf of Green Highland Renewables across Loch Etive (north of Oban in Scotland).

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Rig - Deepsea Yantai

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig Move - Transocean PBLJ to Callanish Field

Chrysaor plan to move the Transocean PBLJ semi-submersible drilling rig from Cromarty to the Callanish field location to drill subsea development well 21/04a-FP.

Destination

Callanish development well 21/04a-FP.

57°59' 31.26"N

0°45' 07.00"E.

 

Mooring involves 8 (pre-laid) anchors. 

guard vessel will be on location between the pre-lay and rig arrival. Throughout drilling operations there will be a dedicated ERRV on location monitoring the surrounding sea area.  

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Dropped drill pipe and collars (2,300kg / 33 metres)

Fugro has reported the loss of 33 metres of drill pipe, weighing a total of 2300kg from the MV Normand Flower whilst working on East Anglia 1 North wind farm. It is not known whether the item is sticking up above the seabed at this stage. Further info...

Dimensions of object: ~33 m of steel drill string consisting of: 4 X Drill Collars (each ~4.5 m long, ~8 inch diameter and ~500 kg in weight) 1 X API Drill String ~9 m long, 4.5 inch diameter and ~300kg weight

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Dropped Large Anchor

A large anchor has been dropped to the seabed by the fishing vessel 'Benarkle' (PD400). The anchor is approximately 3nm SSE of the Ninian South platform.

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Floating LiDAR System - Seagreen Alpha and Bravo windfarms

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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Unexploded Ordnance

Two items of debris identified as WW2 unexploded ordnance

The as-built survey of the Mariner 6" Gas Import pipeline showed two items of debris that were later identified as WW2 unexploded ordnance.

 

The UXOs posses no immediate threat to the burried pipeline. 

 

Plans are being reviewed to arrange for safe removal and destruction/disposal.

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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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Pre positioned MODU Anchors - Serica Rum 3

8 x prepositioned anchors to be installed in support of the Serica Rhum (R3) well intervention operation

8 x 12te Stevpris MK VI anchors will be pre positioned to support the works of the WilPhoenix on the Serica Rhum 3 well intervention operation. The anchors, 4te sub surface buoys and anchor chains will remain in place for the duration of the Rhum well intervention operation. For further information on chain, anchor, touch down and subsurface bouy locations see attachement

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Topsides and Jacket Removal - Brent Alpha Platform

Brent Alpha Platform (topsides and jacket) have been removed. The Jacket footings protrude 55.24m metres above the seabed. There is no longer a Safety Zone around the Brent Alpha remaining structure.

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Wet Storage of Caisson Sections - Bruce 500m Safety Zone

Caisson Wet Storage Location

The wet storage area will, when complete, consist of eight by one tonne gabions with two sections of redundant caisson resting on them. The two caisson sections are 20 metres and 18.5 meters in length weighing 18.4 tonnes and 10.3 tonnes respectively. Six by one tonne gabions were placed on the seabed with the 20 meter section of caisson resting atop of them on the 12th of June 2020. The date when the second 18.5 meter section of caisson will be position in the wet storage area has not yet been determined. 

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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 - Portree Outer

Scottish Salmon Company (SSC) will be carrying out a Hydrographic survey in August at Portree Outer. The proposed works are planned to start on 11th August 2020 and will last approximately 110 days using the Vessel MV Lady Mia Call Sign: ZNP05.

The deployment location will be marked by 1 yellow buoy, marked “survey” and 1 orange buoy.

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Dropped Anchor

Trawler J. Bergvoll Call Sign: LLAJ had come fast to an anchor in Position: 61°32.500'N 001°33.200'E and was dropped in Position: 61°30.371'N 001°40.812'E . Trawl damaged.

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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 - Pipeline Inspection EV01 Triton FPSO (Ref: 1127)

A 5 day pipeline and umbilical routes survey from the proposed EV01 well location to a position close to the edge of the 500m zone at the Triton FPSO. Using Vessel Fugro Venturer Call Sign: C6CG3

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Tailwind Mistral Ltd

Fugro Venturer

C6CG3

N/A

10/08/2020 - 31/01/2021

For 5 Days

21

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Survey - Pipeline Inspection Cygnus Field (Ref: 1126)

A 13 day inspection survey will be undertaken along a number of pipelines/umbilicals in the Cygnus field using an ROV. Using Skandi Carla Vessel Call Sign: C6RX4

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Neptune E&P UK Ltd

Skandi Carla

C6RX4

N/A

01/08/2020 - 31/01/2021

For 13 Days

44, 43

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Leadon Area – Possible Trawl Hazards

Six small structures (approx. 0.5m high x 1.5m long and 0.6m across) were located on the top of the disused Leadon Bundles in UKCS Block 9/14. These small structures are located at the points listed below:

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Drilling - Noble Sam Hartley Golden Eagle Infill

Noble Sam Hartley HDJU undertaking infill drilling from the Golden Eagle platform.

The Noble Sam Hartley will be positioned by wellhead platform 'W' from August 2020 for up to 1 year. The Noble Sam Hartley has three jack-up legs with spud cans to support and stabilise the rig on the seabed and is held in position by a 4-anchor mooring spread.  Once the rig is in position, the anchors and chains will be removed.

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Rig - Ocean Patriot

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - Evelyn EV1 (Ref: 1118)

A 5 day survey survey of Evelyn EV1 using the Fugro Venturer Call Sign:C6CG3.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Petrofac Facilities

Management Limited

Fugro Venturer

C6CG3

2m

3m

10/08/2020 - 31/01/2021

For 5 Days

21

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Survey - Evelyn Development Route (Ref: 1117)

A 5 day survey survey consisting of a pipeline and umbilical routes survey from the proposed EV01 well location to a position close to the edge of the 500m zone at the Triton FPSO using the Fugro Venturer Call Sign:C6CG3.

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Petrofac Facilities

Management Limited

Fugro Venturer

C6CG3

 

10/08/2020 - 31/01/2021

For 5 Days

21

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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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Rig : Maersk Highlander

The jack-up rig Maersk Highlander is alongside Culzean WHP – within 500m zone, UKCS Block 22/25a

The jack-up rig Maersk Highlander is alongside Culzean WHP – within 500m zone, UKCS Block 22/25a

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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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Survey - Evelyn Development

Petrofac will be carrying out a Marine Survey operation on the Evelyn Development Area Block 21/30 around the 10th August 2020 till for approximately 10 days. The operation is however permitted for between the 10th of August till the 31st of Jan 2021.

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Pile Installation - Penguins Field

A number of items will be left installed/wet stored on the seabed around the Penguins Field. Pile Fast Frame (together with pile stick-up) 8 x piles (completed with multiple clay protrusions/blocks) 9 x chains (210m long, 177mm diameter).

Details of Seabed - West Cluster

Pile No Location Clay plugs at pile location
1 61°35.020'N    01°31.070'E  1.30m height x 2.5 dia.
2 61°34.990'N    01°31.070'E 2.00m height x 2.5 dia.
3 61°35.020'N    01°31.060'E 1.50m height x 2.5 dia.
4 61°35.050'N    01°31.070'E 1.50m height x 2.5 dia.

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

 

Details of Seabed - North East Cluster

Pile No Location Clay plugs at pile location
5 61°35.550'N    01°33.430'E 1.30m height x 2.5 dia.
6 61°35.540'N    01°33.470'E 2.00m height x 2.5 dia.
7 61°35.520'N    01°33.510'E 1.50m height x 2.5 dia.
8 61°35.510'N    01°33.550'E 1.50m height x 2.5 dia.

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

 

Details of Seabed - Southern Cluster

Pile No Location Comments
9 61°34.450'N    01°33.500'E

Fast frame is currently located at pile location 9 (11.85m x 11.70m x 30m

Note: 30m pile is installed in this fast frame

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Survey - (Ref: 1109)

A 1 day single location survey at FID Fibre VSP

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Total E&P North Sea UK Limiited TBC

5m

01/08/2020 - 31/12/2020

For 1 Day

29

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Survey - (Ref: 1108)

A 7.5 day Survey around the Culzean Wells

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block
Total E&P North Sea UK Limiited TBC

N/A

01/08/2020 - 31/10/2020

For 7.5 Days

22

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Decommissioning - Viking & Vulcan

Platform removal operations are planned to resume in mid-April 2020 and shall be conducted by two Heavy Lift vessels; Bokalift 1 – Mobilising mid - April for a ~70 day campaign. Gulliver – Mobilising mid - June for a ~100 day campaign.

Southern North Sea Gas Operations operated by Chrysaor Production U.K. Ltd have come to the end of their producing life and are in the process of being removed as part of a decommissioning project.

 

In total 9 satellite platforms where removed in the Viking & Vulcan field as part of the 2019 platform removal campaign. Platform removal operations are planned to resume in mid-April 2020 and shall be conducted by two Heavy Lift vessels;

 

  • Bokalift 1 – Mobilising mid - April for a ~70 day campaign. (Scope Now Complete)
  • Gulliver – Mobilising mid - June for a ~100 day campaign. (Scope Ongoing)
Location Operations Position Removal Schedule
Viking Complex Platform Removal 53°26.800’N 002°19.900’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Caister CM Platform Removal 54°12.100’N 002°27.000’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Ganymede ZD Platform Removal 53°19.500’N 002°14.200’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Viking CD Subsea Operations 53°25.400’N 002°22.600’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Viking ED Subsea Operations 53°26.000’N 002°09.200’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Viking HD Subsea Operations 53°29.800’N 002°19.400’E Bokalift 1 HLV scope completed – 500m/z remains in force until seabed clearance scopes completed
Viking AR Platform Removal 53°32.000'N 002°15.400’E Gulliver Topsides Removed, Jacket remains in situ
Europa EZ Platform Removal 53°14.800’N 002°17.800’E Gulliver June - End Oct 2020
Vampire OD Platform Removal 53°27.800’N 002°02.400’E Gulliver Topsides Removed, Jacket remains in situ
Viscount VO Platform Removal 53°23.200’N 002°08.900’E Gulliver June - End Oct 2020
Viking Complex Platform Removal 53°26.800’N 002°19.900’E Gulliver June - End Oct 2020

 

All locations detailed above have an established 500 meter safety exclusion zone, where the platform remains in situ nav aids are installed exhibiting the characteristics detailed below. It should be noted that Viking CD, ED & HD where removed from location in 2019, the 500meter safety exclusion zone remains.

  • All round white flashing light, Morse (U); flashing every 15s; with a 10nm nominal range and visible from 360 degrees in the horizontal plane
  • Virtual AIS marking transmitting on Navigational Warning Message Channel 21

All vessels are requested to maintain a wide berth from vessels engaged in platform removal and subsea operations when operating in the vicinity of the above locations detailed herewith and during the transportation phase into Great Yarmouth Outer Harbour.

 

The established 500 meter safety exclusion zone at the location of each platform to be removed shall remain enforceable until such time as notified otherwise (note the presence of the exclusion zones shall extend beyond the physical removal of the platform).

 

Following platform removal, Trawl snag hazards may remain at each of the locations until such time as a subsequent seabed clean up and debris removal campaign has been completed.

 

All mariners are advised to avoid the above mentioned locations and remain clear of the statutory 500m safety exclusion zone.

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FPSO Petrojarl Banff Off-station - Mooring Disconnect, Tow, Subsea Well Isolation and Disconnection.

FPSO Petrojarl Banff Off-Station – Mooring Disconnect, Tow, Subsea Well Isolation and Disconnection.

Three vessels are expected to mobilize to the Banff Field in August to commence and disconnect and tow the FPSO Petrojarl Banff from the Field to temporary mooring at Scapa Flow. The disconnection work is expected to take about 5 days,

 

Prior to the  disconnection or the FPSO from the  Banff Field, the Technip operated DSV Deep Discoverer would have completed the subsea well isolation and disconnection of the Banff and Kyle trees. The work commenced the 13th June and is expected to last for 35 days.

 

Prior to 31st October the mooring system, dynamic  risers and umbilical will be recovered.

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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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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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Decommissioning - Ninian Platform

Installation of two cardinal buoys in proximity to Ninian North Platform, prior to decommissioning & topsides / jacket removal by Pioneer Spirit.

West cardinal buoy (Fl. Q. (9). 15s), including ground tackle, with 400m excursion radius. Buoy fitted with AIS.

East cardinal buoy (Fl. Q. (3). 10s), including ground tackle, with 400m excursion radius. Buoy fitted with AIS.

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Rig - Seafox 4

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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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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Fishing Hazard

Details of fishing hazard

A fishing vessel had to release a large clump of concrete back to the sea bed after having become snagged. The concrete clump could pose further risk to fishermen. The lump had broken into two parts.

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Survey - Ref: 1090

A 7.5 day Culzean Wells Survey

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Total E&P North

TBA

2m

5m

01/07/2020 - 31/10/2020

For 7.5 Days

22

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Obstructions

Obstructions, least depth 16.4m. Scattered debris with visible structures like boxes and others in a triangular shape area at the seafloor.

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Suspected New Wreck

Structure 15 m length, 1.6 m width and 0.6 m height. There is an unknown object, raising 8 m, until water surface attached to this structure.

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Change of Active Area – Licence Area 461

A new dredging zone is being made active from 15 July 2020 to the end of November 2020 for a beach recharge scheme in the region. In addition to the current Active Dredge Zone (zone 3) a new area to the north is being activated (zone 2).

On behalf of Volker Dredging Ltd (VDL), this notice is to advise that a new active dredge zone (Zone 2) is being made active on Area 461 for a beach recharge campaign in the region. The beach recharge campaign is likely to begin around 15th July 2020 and therefore the new zone will be active from this date. The recharge operations are expected to be completed by the end of November 2020 when the zone will be deactivated again.

 

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

 

Coordinates for Zone 2 and Zone 3 (in Lat-Long WGS84) are shown in the table below.

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Reported position of the wreck of the J-Sea (E-333) fishing vessel

The 14 metre fishing vessel, J-Sea (E-333), was reported to have capsized and sank on the eve of the 30 May 2020 - all three crew rescued from their life raft by another fishing vessel. Position reported by fishing industry

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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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Rig : Rowan Gorilla 5

The jack-up rig Rowan Gorilla 5 is alongside West face of Franklin WHP – within 500m zone, UKCS Block 29/5b

The jack-up rig Rowan Gorilla 5 is alongside West face of Franklin WHP – within 500m zone, UKCS Block 29/5b

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Pipeline Span - Dunbar to Alwyn: PL1043

Significant free-spans have been identified along the PL1043 Dunbar to Alwyn pipeline

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

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Plugged and Abandoned Well : Sween

Sween UKCS 3/30 : Abandoned Wellhead (3/30-7)

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

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MacCulloch Area – Location of Donan (Dumbaton/GP3) Gas Export Tie-In Skid

Post decommissioning of the MacCulloch FPSO / Field in UKCS Block 15/24, a Guard Vessel is no longer in position at the location of the Tie-In Skid at MacCulloch 

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

 

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

 

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

 

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Plugged and Abandoned Well : Balvenie

Balvenie UKCS 3/14: Abandoned Wellhead (3/14d-18)

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

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Plugged and Abandoned Well : Alwyn South

Alwyn South UKCS 3/9 : Abandoned Wellhead (3/9a-11)

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

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Rig - Maersk Intrepid

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Rowan Viking

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Survey - (Ref: 1086)

A 2 day Survey, expected to start June 2020 Vessel "MV Fugro Frontier call sign: C6BH4"

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Fugro Marine

Netherlands B.v

Fugro Frontier

C6BH4

 

04/06/2020 - 30/11/2020

For 2 Days

42/24

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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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Rig - Valaris Gorilla VI

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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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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Survey - Ref:1076

A 45 day Survey, expected to start 10 May 2020, with the vessels "Amazon Warrior" (3FNE9) "SW Cook" (5BPC2) "Vivre G" (HO9384) and "Ocean D" (ZDJY8)

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

Shearwater Geoservices Ltd

Amazon Warrior (3FNE9)

SW Cook (5BPC2)

Vivre G (HO9384)

Ocean D (ZDJY8)

 

01/05/2020 - 31/10/2020

For 45 Days

21, 22

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Survey - Ref:1036

A 245 day Survey, expected to start 01 March 2020, with the vessels "Sanco Star" (ZDIT8) "Normand Tonjer" (LAXJ5) and "MAC Pagasus" (9HA3722)

Company Vessels

Towed Cable

Length & Depth

Duration Survey Block

CCG Services (UK) Limited

Sanco Star

ZDIT8

Normand Tonjer

LAXJ5

MAC Pegasus

9HA3722

 

01/03/2020 - 31/10/2020

For 245 Days

22,23,29 & 30

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Freespans - Breagh Pipelines

Two freespans have been identified on the 20” gas export line (PL2768). Please exercise caution in this area.

Start Position End Position

Length (m)

Height  (m)

54°36.952'N 00°14.608'E 54°36.952'N 00°14.599'E 23.15 1.00
54°39.576'N 00°49.814'W 54°39.577'N 00°49.827'W 30.37 1.00

 

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Wreck - Off Ilfracombe

Wreck appears to be 13m long, 9m wide, with a shallowest point registered at just over 26m.

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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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Rig - Deepsea Nordkapp

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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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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Rig - Stena Don

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Valaris 122

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Uncharted Wreck

Recent wreck reported to UKHO by M/V Northern Wind (Clinton Marine Survey)

The Wreck lies on about 18m depth, it is about 17m long, 4.5m wide & sticks up 1.5m from the seabed

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Rig - Foinaven Petrojarl FPSO

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Rowan Stavanger

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - 590021

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Borr Ran

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Interceptor

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Ensco 120

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Maersk Reacher

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Pipeline Span - PL3088, Cygnus Field

The PL3088 Cygnus Export Pipeline Span located ~21km South West of Neptune’s Cygnus Alpha Complex.

The PL3088 Cygnus Export Pipeline Span located ~21km South West of Neptune’s Cygnus Alpha Complex, as reported during the 2019 pipeline inspection campaign. The 29m span length and 0.26m span depth shown below could present a Hazard to Fishing.

 

Start Position End Position Length (m) Height (m)
54º27.672’N   02º01.612’E 54º27.664’N   02º01.589’E 29m 0.26m

 

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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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Rig - Noble Lloyd Noble

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Esvagt Capella

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Safe Caledonia

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Glen Lyon

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Mizu FPSO

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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Rig - Island Innovator

Oil & gas rigs are protected by a 500m safety zone and some may have anchors extending beyond this zone.

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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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Breagh Pipelines - Exposed Fibre Optic Cable

The Breagh fibre optic cable (PL2770) is exposed on the seabed along various stages of the route between Redcar and the Breagh A platform.

A scallop dredger became snagged on an exposed section of the fibre optic cable in June 2019 causing serious damage to the fibre optic cable and subsequently had to abandon retrieval of his gear for safety reasons.  This notification is made to the fishermen, operating between Redcar and the Breagh A platform, to be advised that the fibre optic cable represents a serious snag risk to both scallop dredgers and static gear fishing in the vicinity of the line.

 

Fishermen are advised to stay away from the line to avoid the risk of becoming snagged on the unburied sections of cable.

 

Breagh Alpha Platform 54°35.693'N 000°25.926'E
IP1 54°36.372'N 000°24.471'E
IP2 54°37.462'N 000°06.365'W
IP3 54°38.642'N 000°40.856'W
IP4 54°39.893'N 000°55.992'W
IP5 54°37.757'N 001°04.765'W

 

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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

 

 

 

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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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