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2022 2023 Fecamp OWF IAC France in progress 1 e1679994340293

Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation

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Asso has performed the route preparation (boulder clearance & PLGR operations), cables installation (cables free laying and pull-in activities) and protection activities by means trenching at 57x array cables and 14x collector cables. The scope of works also included as-buried surveys for each the aforementioned cables. 

The main vessels that were utilized are: 

• CLV Ariadne for cables installation activities 

• TSV Argo and TSV Athena as Trenching Support Vessels for route preparation, cables burial and surveys operations. TSV Athena was used for the cables backfilling operations as well. 

In addition, the following support vessels were mobilised: 

• Esvagt Froude with Walk-to-Work system for supporting the cables pull-in and T&T activities 

• CTVs for supporting the SOV as contingency 

For the cable burial activities TSV Argo was rigged with AssoTrencher IV Mk9 mechanical trencher vehicle and AssoJet III Mk2 jetting ROV, while TSV Athena was rigged with AssoTrencher IV Mk13 mechanical trencher vehicle. 

For the route preparation activities MPSV Astrea was rigged with AssoGrapple boulder removal grapple and TSV Athena was used for PLGR activities.

ASSO’s scope of work included:

  • Preparation Activities // Mobilization Activities
  • Cable Loading & Transportation 
  • Boulder removal
  • ROV Survey
  • Pre-lay Grapnel Run Operations 
  • Pre lay and Post Lay Burial Mechanical Trenching 
  • Pull in on OSS/WTG 
  • Cable Lay Operations  
  • Post Lay Burial Operations -Jetting  

PROJECT SPECIFICATIONS

  • Owner
    Eolien Offshore des Hautes Falaises (EOHF)
  • Contractor
    Prysmian PowerLink SrL
  • Year
    2022, 2023
  • Cable Type
    mv
  • Cable Diameter
    Cu: 148.2, Al:147,6
  • Cable Weight
    4200Te
  • Trenching Length & Burial Depth
    107km
  • Max Water Depth
    26-34m LAT

    Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation

    Asso has performed the route preparation (boulder clearance & PLGR operations), cables installation (cables free laying and pull-in activities) and protection activities by means trenching at 57x array cables and 14x collector cables. The scope of …

    Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation

SERVICES PROVIDED

Some of the services we provided for Fecamp OWF (IAC) (France) – Subsea Cable Laying/Protection/Route Preparation 

  • Subsea Cable Laying Subsea Cable Laying
  • Subsea Cable Protection Subsea Cable Protection

VESSELS USED

  • Ariadne

    DP III – Cable Laying Vessel The Ariadne is a DP-3 Cable Laying Vessel built for worldwide operations, …

    Ariadne Cable Laying Vessels
  • Athena

    DP III – Trenching Support Vessel The Athena is a MarinTeknikk® MT6024 design DP-3 Trenching Support Vessel built …

    Athena Trenching Support 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
  • Astrea

    DP II – Multipurpose Support Vessel The Astrea is a DP-2 Multipurpose Support Vessel built for worldwide operations …

    Astrea General Support Vessels

EQUIPMENT USED

  • AssoTrencher IV Mk13

    AssoTrencher IV Mk13 sits at the top of the trenchers range and represents the thirteenth upgrade of the …

    AssoTrencher IV Mk13 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
  • AssoGrapple I

    The Assograpple I is a purpose-built construction able to remove rocks or similar products, it also incorporates a …

    AssoGrapple I Pre-Trenching/Boulder Clearance, Seabed Preparation Equipment

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