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2021 2022 2023 Viking Link – in progress 19

Viking Link – Subsea Cable Protection

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Viking Link is a 1,400MW 760km subsea interconnector between the substation Bicker Fen in Lincolnshire, UK and the substation Revsing in southern Jutland, Denmark. 

The purpose of the project is the transmission of electrical energy between Revsing Denmark, via the HVDC substations and DC link with DC cables, to Bicker Fen in the UK, taking all modes of operation into consideration without adding new implications to the existing grids.

The overall cable system is composed by the following parts:

·        DC land cables from UK converter station to UK marine transition joints (approximately 66.5km route length)

·        DC submarine cables between transition joints in UK and Denmark, also passing through Dutch and German waters (approximately 619km route length)

·        DC land cables from Denmark converter station to Danish marine transition joints (approximately 76km route length)

Asso’s scope of work included:

·        Preparation Activities // Mobilization Activities

·        Boulder removal

·        Pre-lay Grapnel Run Operations

·        Route Clearance Opearations

·        Pre- and Post-lay Mattresses installation Operations

·        Post Lay Burial Mechanical Trenching 

·        Post Lay Burial Operations -Jetting 

·        ROV Survey

PROJECT SPECIFICATIONS

  • Owner
    National Grid Interconnector Holdings Limited & Energinet Eltransmission A/S
  • Contractor
    Prysmian PowerLink Srl
  • Year
    2021, 2022, 2023
  • Cable Type
    hvdc
  • Trenching Length & Burial Depth
    Shallow-water: 4,535m @1.0m Deep-water: 76860m @1.0m and 2.0m
  • Jetting Length & Burial Depth
    Shallow-water: 7,400m @1.0m Deep-water: 523550m @1.0m, 1.5m and 2.0m

    Viking Link – Subsea Cable Protection

    Viking Link is a 1,400MW 760km subsea interconnector between the substation Bicker Fen in Lincolnshire, UK and the substation Revsing in southern Jutland, Denmark.  The purpose of the project is the transmission of electrical energy between Revsing Den …

    Viking Link – Subsea Cable Protection

SERVICES PROVIDED

Some of the services we provided for Viking Link – Subsea Cable Protection 

VESSELS USED

  • Atalanti

    DP II – Cable Laying Vessel The Atalanti is a DP-2 Cable Laying Vessel that has been specially …

    Atalanti Cable Laying Vessels
  • Argo

    DP II – Trenching Support Vessel The Argo is a DP-2 Trenching Support Vessel built for worldwide operations, …

    Argo Trenching Support Vessels
  • Aethra

    DP II – Trenching Support Vessel The Aethra is a DP-2 Trenching Support Vessel built for worldwide operations, …

    Aethra Trenching Support Vessels
  • Artemis

    DP I – Anchor Handling and Supply Vessel The Artemis is a DP-1 Anchor Handling Tug & Supply …

    Artemis General Support Vessels

EQUIPMENT USED

  • AssoTrencher IV Mk12

    AssoTrencher IV Mk12 sits at the top of the trenchers’ range and is currently undergoing its twelfth upgrade. …

    AssoTrencher IV Mk12 Deep Water Trenchers, Subsea Burial Equipment
  • AssoTrencher IV Mk9

    AssoTrencher IV Mk9 sits at the top of the mechanical trenchers range as it forms the latest version …

    AssoTrencher IV Mk9 Deep Water Trenchers, Subsea Burial Equipment
  • AssoJet III Mk2

    The AssoJet III Mk2 is the newest of the ASSO’s jetting ROVs. It is in-house designed & is …

    AssoJet III Mk2 Deep Water Trenchers, Subsea Burial Equipment
  • Multi-functional Plough

    The Multi-Functional Pre-Lay Plough represents the latest investment of ASSO Group in order to cover the constantly evolving …

    Multi-functional Plough Pre-Trenching/Boulder Clearance, Seabed Preparation Equipment

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