Discoverer Clear Leader
 Discoverer Clear Leader is a double hulled dynamically positioned drillship capable of operating in moderate environments and water depths up to 12000 feet (3657m) using an 18.75 in (47.6 cm) 15000 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.