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    CSO Constructor completes first job

    News // July 27, 2001
    Coflexip Stena Offshore's (CSO) CSO Constructor - which has just completed a major conversion at Cammell Laird in the UK - has completed its first contract in offshore Norway.

    CSO says the CSO Constructor provide clients with a subsea construction vessel that is capable of installing rigid and flexible pipe, as well as umbilicals to a depth of 1,500m (4,900ft).

    CSO Constructor will spend the summer in the Norwegian sector of the North Sea, where she successfully completed the Esso Ringhorne work on schedule. Her first assignment was to install two mid-water arches and their anchor bases (120 and 90 metric ton lifts) and conduct flexible riser and umbilical installation and pull-in.

    CSO Constructor has just completed mobilisation at the CSO offshore base in Le Trait, France, for its next assignment, Norsk Hydro's Visund project. Here, the scope of work will consist of the installation of two 6in flexible risers, one 8in flexible riser, one dynamic service umbilical in the Pliant Wave configuration using the Vertical Laying System. The vessel will also install one manifold, two protection structures and rigid spools.

    The CSO Constructor has been lengthened by 15m and widened by almost 5m. This has significantly increased the working deck area, including a new raised deck extending the full breadth of the vessel and providing a pipeline payload of up to 3,000 metric tons. It is also equipped with two new 300 and 25 metric ton cranes. The vessel can install rigid lines with the M-J Lay system, or flexible lines and umbilicals, stored in a carousel under deck, using the Vertical Laying System (VLS), down to 1,500m (4,900ft).

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