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2020 2022 2023 St.Brieuc OWF IAC France in progress 4

St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation

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The St. Brieuc Project zone is located off the northwest coast of France, in the bay of St. Brieuc. The proposed development zone is approximately sixteen (16) km from the shore and extends over an area of 103 km². The actual wind farm site is approximately 78 km².

Asso has performed the route preparation (boulder clearance and PLGR operations), cables installation (cables free laying and pull-in activities) and protection activities by means of pre-trenching, trenching in rock locations, and post lay mechanical trenching and jetting at 54x array cables and 8x collector cables. The scope of works also included the CPS supply and installation as well as pre-lay and as-buried surveys for each the aforementioned cables. 

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
    Ailes Marines S.A.S.
  • Contractor
    Prysmian PowerLink Srl
  • Year
    2022, 2023
  • Cable Type
    mv
  • Cable Diameter
    Al 630mm: 167, Al 800mm:169
  • Cable Weight
    campaign 1 ~1100Te
  • Laying Length
    77,855m
  • Trenching Length & Burial Depth
    22925m (Pre) & 36610m (Post) @1.5m, 0.8m and 0.5m
  • Jetting Length & Burial Depth
    16030m @1.5m, 0.8m and 0.5m

    St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation

    The St. Brieuc Project zone is located off the northwest coast of France, in the bay of St. Brieuc. The proposed development zone is approximately sixteen (16) km from the shore and extends over an area of 103 km². The actual wind farm site is approxim …

    St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation

SERVICES PROVIDED

Some of the services we provided for St. Brieuc OWF (IAC) (France) – Subsea Cable Laying/Protection/Seabed Preparation 

  • Subsea Cable Laying Subsea Cable Laying
  • Seabed Preparation Seabed Preparation

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

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
  • 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
  • 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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