GustoMSC has unveiled a new series of drilling semisubmersibles designed for harsh environments.

Called the OCEAN-HE, the hull shape of the new semisubmersibles has been designed for low motion characteristics and optimum station keeping capabilities, the company said in a news release. The series includes the OCEAN850-HE and OCEAN1600-HE, the company’s largest to date.

Aimed for use in deepwater, the OCEAN1600-HE features a maximum displacement of about 70,000 tons, a large derrick, DP3 and a 16 point mooring system for station keeping, combined with a large deck area and large variable deck load.

The OCEAN850-HE is designed for midwater harsh environments, the company said. The semisubmersible has a displacement of about 50,000 tos with a water depth rating of 1,000 m and a 6th generation single derrick combined with horizontal riser storage.