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Kriegers Flak CGS Photo 1
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Energinet SOV and 50Hertz Transmission GmbH have built a cable connection, consisting of two HVAC cables, between Krieger’s Flak offshore substation KFB (Denmark) and EnBW Baltic 2 offshore substation (Germany). This project is part of the Krieger’s Flak (KF) Combined Grid Solution (CGS).

The length of the cable route corridor is approximately 25km long, with approximately 17km in Danish EEZ and approximately 8km in German EEZ. The water depth along the planned cable route corridor varies from 15 to 45 m below Mean Sea Level (MSL).

50Hertz and Energinet SOV have awarded Assodivers the protection of the above mentioned interconnecting submarine cables between the two platforms.

ASSO performed a pre-lay jetting run to identify the routes’ hard soil section requiring pre-trenching.

Following successful pre-lay jetting run showing AssoJet III capability to bury the cables, and upon cable laying by 3rd party, ASSO performed post-lay jetting operations for the whole cable routes protection.

PROJECT SPECIFICATIONS

  • Owner
    Energinet.dk & 50Hertz Transmission GmbH
  • Contractor
    Assodivers Group
  • Year
    2018
  • Location
    Baltic Sea
  • Cable Type
    hvac
  • Cable Diameter
    213mm
  • Cable Weight
    78kg/m
  • Trenching Length & Burial Depth
    65,126m @1.0m 31,124m @ 2.0m
  • Max Water Depth
    45m

SERVICES PROVIDED

Some of the services we provided for Kriegers Flak CGS 

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VESSELS USED

  • 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

  • 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
  • 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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