Transocean Ltd. is the largest offshore drilling contractor globally, specializing in technically demanding drilling services in deepwater and harsh environments. Headquartered in Steinhausen, Switzerland, the company operates in over 20 countries, including the United States, Canada, and Norway. Transocean's mission is to deliver premier rig-based well construction services, focusing on safety, operational excellence, and continuous improvement.

The company provides offshore contract drilling services to the oil and gas sector, with a fleet of 34 mobile offshore drilling units, including ultra-deepwater and harsh environment floaters. These high-specification rigs are capable of operating in challenging offshore conditions, with notable vessels like the Deepwater Horizon and Dhirubhai Deepwater KG2. Transocean's primary customers include major integrated energy companies and national oil companies, who rely on its expertise for complex offshore drilling projects worldwide.