Engineers stand near the drilling tower on an ultra-deepwater semisubmersible rig at the Keppel shipyard in Singapore

 
Engineers stand near the drilling tower on an ultra-deepwater semisubmersible rig at the Keppel shipyard in Singapore
Engineers stand near the drilling tower on an ultra-deepwater semisubmersible rig at the Keppel shipyard in Singapore March 28, 2009. The rig is designed for oil and gas drilling at deep sea sites, and is one of seven rigs being built for the U.S.-based company Ensco International. REUTERS/Vivek Prakash (SINGAPORE ENERGY BUSINESS)