Hyundai builds Ulstein design
The Toisa MOCV is the first vessel to be built based on the Deepwater Enabler design
The DP3 vessel is a customised version of Ulstein’s Deepwater Enabler, the Norwegian shipbuilder noted. It is designed for worldwide operations in the oil and gas sector, ultra deepwater installation and construction, flexible lay, pipelay, cable lay and topside construction support.
The 150.5m-long vessel design features a fully active heave compensated (AHC) offshore crane, rated at 900 tonnes SWL with a depth capability of 3,500m, and a second, knuckleboom crane of 200 tonnes SWL with depth capability of 2,000m. The vessel can accommodate a 550-tonne flex lay tower over the main moonpool and two 2,500-tonne capacity carousel spaces below deck. From the enclosed hangar, two large work class ROVs can be deployed to port and starboard side or through a central moonpool. The vessel will be able to accommodate 250 persons.
Main propulsion is provided by three stern azimuthing thrusters, powered by a diesel electric plant of six main generators. The machinery spaces are divided into two engine rooms, each containing three of the main gensets. All machinery, power and control systems are physically separated throughout the vessel in full compliance with the requirements for IMO Equipment Class 3 DP, Ulstein said.
The deck area of about 2,900m2 is designed to give optimised clear space for the installation of project equipment such as pipelay spreads, and for the carriage and deployment of heavy offshore equipment for installation. The deck is specially strengthened up to 50t/m2 in key areas.
