Discoverer Clear Leader

Discoverer Clear Leader is a double hulled dynamically positioned drillship, capable of operating in moderate environments and water depths up to 12,000 feet (3,657m) using an 18.75 in (47.6 cm), 15,000 psi blowout preventer (BOP), and a 21 in (53 cm) outside diameter (OD) marine riser. The Marshall Islands-flagged vessel is owned by Transocean, and is operating in the Gulf of Mexico of the United States.^[2][3]

Ship going to the Deepwater Horizon oil spill on 9 July 2010
History
Name	Discoverer Clear Leader
Owner	Triton Asset Leasing GmbH
Operator	Transocean
Port of registry	Marshall Islands, Majuro
Ordered	27 February 2006
Builder	Daewoo Shipbuilding & Marine Engineering Okpo, South Korea
Laid down	6 August 2007
Launched	10 November 2007
Completed	2009
Identification	Call sign: V7MO2 DNV ID: 27186 IMO number: 9386122 MMSI number: 538002877
Status	Operational
Notes	[1]
General characteristics
Class and type	Det Norske Veritas
Tonnage	65,573 GT; 10,100 DWT
Length	254.4 m (835 ft)
Beam	38 m (125 ft)
Draught	13 m (43 ft)
Depth	19 m (62 ft)
Notes	[1][2]

Sister ships

Discoverer Clear Leader design is a "Transocean Offshore enhanced Enterprise-class" and has four other sister ships: Discoverer Americas, Discoverer Inspiration, Discoverer Luanda, and Discoverer India.^[1]

Discoverer Inspiration delivers new containment cap to the Deepwater Horizon oil spill on 10 July 2010. In the background are the Discoverer Enterprise, GSF Development Driller II, and Helix Producer I