Transocean Ltd. (Transocean) is an international provider of offshore contract drilling services for oil and gas wells. As of February 2, 2010, the Company owned, had partial ownership interests in, or operated 138 mobile offshore drilling units. As of February 2, 2010, its fleet of 138 rigs consisted of 44 High-Specification Floaters (Ultra-Deepwater, Deepwater and Harsh Environment semisubmersibles and drillships), 26 Midwater Floaters, 10 High-Specification Jackups, 55 Standard Jackups and three Other Rigs. In addition, it had five Ultra-Deepwater Floaters under construction. The Company operates in two segments: contract drilling services and other operations. Contract drilling services, the Company�s primary business, involves contracting Transocean�s mobile offshore drilling fleet, related equipment and work crews primarily on a day rate basis to drill oil and gas wells. The other operations segment includes drilling management services, and oil and gas properties.