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    More details on Helix well intervention vessel

    Vessel & ROV News // December 7, 2006

    Artist's impression of Helix Energy Solutions' new well intervention vessel.

    IHC Holland Merwede in The Netherlands has provided more details about the well intervention/dive support/offshore construction vessel Merwede Shipyard is to build for Helix Energy Solutions.

    The vessel is the second to be built at the newly commissioned fourth slipway utilised by the Group in Krimpen aan den IJssel.

    Merwede Shipyard said it secured the order because of its ability to design and offer the vessel - including the integration of the complete well intervention plant, dive spread and ROV spread - in the required delivery time and for a fixed price.

    The vessel will be built under Yard No 715 at IHC Holland Merwede BV’s new facility in Krimpen and delivery will take place at the end of 2008.

    The vessel is designed to support subsea well intervention, including coil tubing, electric line and slick line intervention activities.

    The introduction of the vessel will provide Helix Energy Solutions’ subsidiary Well Ops UK Ltd with another versatile vessel in addition CSO Seawell.

    The ship will have a length overall of approximately 31.70m, length between perpendiculars on design draft of 117.70m, breadth moulded of 22.0m, depth to main deck of 9.50m, design draft of 6.25m, and scantling draft of 6.75m.

    Deadweight at design draft will be approximately 6,750 tonnes, and deadweight at scantling draft will be approximately 7,950 tonnes.

    The ship's complement will be 120 persons and the vessel will be built in accordance with the rules and regulations of DNV to obtain the following notation: * 1A1, EO, SF, Dynpos, AUTRO, HELDK-SH, COMF C(3), DK(+), DSV-SAT, ERN
    (99,99,93), and to the regulations of the United Kingdom Authorities.

    The was designed by Merwede Shipyard in close collaboration with Helix Energy Solutions’ subsidiary Well Ops UK Ltd and has been based on an enhanced version of Merwede Shipyard’s versatile 22m beam design.

    It will be a fully DP3 vessel suitable for worldwide operation.

    The vessel will be equipped with:

    • Owner-furnished well intervention plant consisting of a derrick with a coiled tubing and a lubricator winch, a cement plant and a compressor plant.
    • A dual bell 18-man saturated dive spread with hyperbaric lifeboat capable of operating up to 300m water depth.
    • Two work class deck mounted ROVs.


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