Diamond Offshore Drilling, Inc., together with its subsidiaries, operates as an offshore oil and gas drilling contractor worldwide. The company provides offshore drilling services in the deepwater, harsh environment, conventional semisubmersible, and jack-up markets to independent oil and gas companies, and government-owned oil companies. It operates a fleet of 46 offshore rigs consisting of 32 semisubmersibles, 13 jack-ups, and 1 drillship. The company was founded in 1989 and is headquartered in Houston, Texas. Diamond Offshore Drilling, Inc. is a subsidiary of Loews Corporation.