Sevan Driller Sevan Driller Sevan Driller is a drilling unit based on Sevan SSP’s 650 circular hull design. Sevan Driller is today owned and operated by Sevan Drilling / Seadrill. The unit was constructed at Cosco Nantong Shipyard in China. Key data Year Delivered 2009 Vessel type MODU DP class III Water Depth 3000 m (10 000 ft) Variable Drilling Loads 15 000 mT Hook Load 907 mT (1000 ton) Racking Capacity 11 400 m (37 400 ft) Mud Storage / Pits 2 500 m3 / 950 m3 BOP 18 ¾”, 15 000 psi