Transocean Partners LLC (together with its subsidiaries and predecessors, unless the context requires otherwise, “Transocean Partners”, “we”, “us”, or “our”), a Marshall Islands limited liability company, was formed on February 6, 2014 by Transocean Partners Holdings Limited, a Cayman Islands company (the “Transocean Member”) and a wholly owned subsidiary of Transocean Ltd. (together with its affiliates, unless the context requires otherwise, “Transocean”), to own, operate and acquire modern, technologically advanced offshore drilling rigs. At December 31, 2015, the drilling units in our fleet included the ultra‑deepwater drillships Discoverer Inspiration and Discoverer Clear Leader and the ultra‑deepwater semisubmersible Development Driller III, which are located in the United States (“U.S.”) Gulf of Mexico.
We own a 51 percent interest in each of the entities that owns and operates the drilling units in our fleet (each individually, a “RigCo”, and collectively, the “RigCos”). The Transocean Member owns the remaining 49 percent noncontrolling interest in each of the RigCos. On August 5, 2014, we completed the initial public offering of 20.1 million common units, which trade on the New York Stock Exchange under the symbol “RIGP.” The Transocean Member holds the remaining 21.3 million common units and 27.6 million subordinated units, which collectively represented a 70.8 percent limited liability company interest in us at the time of our initial public offering, and all of our incentive distribution rights (see Note 10—Unit Repurchase Program and Note 18—Subsequent Events). As a result of the offering, the Transocean Member received net cash proceeds of $417 million, after deducting approximately $26 million for underwriting discounts and commissions and other offering costs.
The Transocean Partners LLC Predecessor (the “Predecessor”) represents 100 percent of the combined results of operations, assets and liabilities of the drilling units in the fleet (the “Predecessor Business”) prior to completion of the formation transactions and initial public offering on August 5, 2014.