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    Deep Blue takes to the water

    Vessel & ROV News // September 7, 2000
    Coflexip Stena Offshore (CSO) says its new-build ultra deepwater pipelay and subsea construction vessel, CSO Deep Blue, has been launched by Hyundai Mipo Dockyard in Ulsan, Korea.

    The CSO Deep Blue is scheduled to begin operations mid-2001 after installation of her pipelay equipment in the Netherlands early in 2001.

    The construction of the vessel has progressed according to schedule, says CSO. In the remaining months of this year, construction and commissioning of the vessel will be completed in Korea. The vessel will then sail to the Netherlands, early in 2001, where her unique pipelay equipment will be installed.

    CSO Deep Blue's laying system is designed around a powerful tiltable ramp, equipped with two quad track tensioners capable of sustaining 550 metric tons. This unique tensioning capacity is reinforced by its ability to lay rigid (reeled), flexible, rigid(J-Lay) pipes and umbilicals, thus offering CSO clients a full range of products and installation options. The combination of fast installation techniques, large payload and high transit speed will ensure an optimum solution for deepwater developments,says CSO.

    The 190 million Euros investment in CSO Deep Blue marks the most significant step taken by the Group to adapt its fleet to the deep and ultra deepwater requirements of its clients in Brazil, Gulf of Mexico, West Africa, and the sectors conditions encountered in the North Sea.

    At 206m overall, the CSO Deep Blue will have a breadth of 32m, depth of 18m, and maximum displacement of 50,000t at 10m draft. With a transit speed of 13kt, the DP Class 2 ship will have a total installed power of 35MW, accommodation for 120, and a S61Nhelideck. Her pipelay equipment will be supplied by Huisman-Itrec.

    Capable of working in water depths of up to 2,500m, she will be equipped with a pair of work class ROVs rated to 3,000m. Her 10,000t pipe payload equates to 5,000t of rigid lines (two reels), flexibles/umbilicals on two carousels (2,000t and 1,500t), 8 x300t of portable reels, and around 3,000t of subsea structures. Her tensioning capacity will be 550t, laying at angles of 60 degrees to 90 degrees. Her heavy lift capability will be in the order of 400t.

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