Offshore Construction Specialists (OCS)

    OCS is subcontracted by Heerema Marine Contractors BV for the installation engineering for the Tie-in spool installation for the Arkutun Dagi Field Development in Sakhalin. The Arkutun Dagi Field is operated by Exxon Neftegas Limited (ENL).


    • Spool and tunnel lift engineering including spreader bar design
    • Installation procedure for spools and tunnel installation
    • Conceptualization and design of all installation aids
    • Tunnel re-configuration Engineering (consolidating 12 sections into 3) including:
      - In place analysis
      - Ice loading
      - Rock Placement
      - CP checks
    • Dynamic lift analysis for motion assessment
    • Grillage and seafastening analysis and design of structural components
    • Transportation vessel stability
    • Preparation of fabrication drawings for spools and tunnel sections