CIMC Raffles delivers COSLProspector

Offshore staff

YANTAI, ChinaCIMC Raffles has delivered in Yantai, Shandong, China, the fourth deepwater semisubmersible drilling rig built for COSL, the COSLProspector.

The COSLProspector is a DP-3 vessel with length of 104.5 m (343 ft), width of 70.5 m (231 ft), height of 37.55 m (123 ft), and an operating depth of 1,500 m (4,921 ft), a drilling depth of 7,600 m (24,934 ft) and a designed operating temperature as low as -20°C (-4°F). A maximum variable deck load of 5,000 metric tons (5,511 tons), the multi-function platform is also able to accommodate 130 personnel. It is classed by DNV and CCS, and satisfies the strictest standards of PSA and NORSOK. Equipped with 10,000 controllers and alerts, the remote monitoring can be achieved in this highly automatic unit.

On the base of GM-4000 series, COSLProspector was designed jointly by Agility Group, COSL, and CIMC Raffles. CIMC Raffles was responsible for all detailed design, construction, and commissioning work. It adopts the most advanced power management and environmentally friendly design concepts, and facilities with DP-3 close bus-tie, variable frequency drive, escape chute system, and automatic ice-cleaning technology.


CIMC Raffles has now delivered the new deepwater COSLProspector rig to COSL.

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