announced Deepwater Pathfinder - a first-of-its-kind, ultra-deepwater drillship - began a five-year work program in the Gulf of Mexico. The ship, the first new build capable of drilling in 10,000 ft.

Seeing some success, the next drill ship incorporated a moon pool and an onboard drilling derrick. After its success, companies soon ordered the construction of subsequent drillships. Transocean ...