Vantage Drilling Company (Vantage) is development-stage international provider of offshore contract drilling services for oil and gas wells. As of February 28, 2009, Vantage operated one ultra-premium jackup rig in Southeast Asia under a two-year contract and has three ultra-premium jackup rigs under construction. The Company also have entered into an agreement to acquire 45% ownership in an ultra-deepwater drillship. In addition, the Company manages two ultra deepwater drillships and one ultra deepwater semisubmersible, all of which are under construction, pursuant to construction supervision and management agreements.