Dutch outfit GustoMSC has launched a new harsh environment drilling semisubmersible series, OCEAN-HE.
The OCEAN850-HE and OCEAN1600-HE have been designed for mid-water and deepwater harsh environment regions.
The series' semisubmersible hull shape has been designed for low motion characteristics and optimum station-keeping capabilities.
The OCEAN1600-HE will have maximum displacement of about 70,000-ton, a large derrick, DP3 and a 16-point mooring system for station keeping, combined with a large deck area and large variable deck load. It is designed to cope with the North Atlantic environmental conditions, says GustoMSC.
The OCEAN850-HE is a cost efficient midwater harsh environment design, says the firm. It is a moored-only, harsh environment semisubmersible, with about 50,000-ton displacement and 1000m water depth and a 6th generation single derrick combined with horizontal riser storage.
GustoMSC has been involved in the design and engineering of semi-submersibles since the 1970s. In the mid-1980s, Keppel Fels-DTG and GustoMSC teamed up to develop the DSS series of drilling semisubmersibles, including the Maersk D-rigs, the Gold Star and the Floatel DSS20-NS designs. This successful development is still continuing.
GustoMSC’s OCEAN series, started in 2008, has seen five units built and introduced within weight, budget and time.