Bollinger delivers Ocean Intervention IIYard News // August 25, 2000
The hull was launched on 01 January and the vessel was christened on 19 May.
Ocean Intervention II is a 254ft x 54ft x 19ft MSV designed for deepwater installation work. Two obvious differences from other offshore support vessels are her nearly flat bottom and two very large bow thrusters compared to similar size vessels.
The flat bottom was designed to permit easier operation of remotely operated vehicles (ROVs) and other equipment from her forward and aft 18ft x 18ft moonpools.
The 6.5ft diameter bow thrusters, elements in the vessel's dynamic positioning system, help to meet the American Bureau of Shipping (ABS) DPS-2 certification.
Scott Theriot, Bollinger's executive vice president of new construction, said "The nearly flat bottom lowered construction costs by allowing much of the hull work to be accomplished on an automated welding panel line".
The diesel-electric vessel develops a total of 5,470kW from two Caterpillar 3516B and two Caterpillar 3508 generators. Propulsion is provided by two, 2,000 HP-DC AquaMaster azimuthing thrusters (Z-drives) and two 1,000 HP-DC KaMeWa bow thrusters aid manoeuvrability.
A fully redundant Kongsberg Simrad dynamic positioning system controls all the pertinent elements to keep Ocean Intervention II in position.
The MSV has a one-inch thick steel deck of approximately 6,000 square feet with a deck load capacity of 1,080lb/suqre foot, with no combustible tanks bordering for the weld of deck cargo.It is able to carry and install significant lengths of coiled tubing umbilicals for subsea completions and is suitable for other projects including pipeline/flowline tie-ins, pipeline crossings and riser installations.The ship carries a built-in Oceaneering Millennium Class 150 HP deepwater ROV operated from the forward moonpool, which is dedicated to this purpose and allows operation in extreme sea conditions not normally possible in other ROV installations. A secondmoonpool is available on the open deck to facilitate subsea operations.
Some of the deck equipment includes a 40-ton deck crane, a 60-ton slewing stern A-frame, a five-ton crane, an anchor windlass and a 5ft x 5ft 100-ton stern roller.
Ocean Intervention II is able to accommodate 50, including 14 crew members. Ocean Intervention II can carry 222,703 gallons of fuel; 3,000 gallons of lub oil and 74,371 gallons of potable water.
The four-deck vessel was built for the post delivery addition of a heliport and is ABS classed + A1, AMS, DPS-2, SOLAS-certified, USCG Subchapter L, unrestricted service.