In April 2010, a drilling rig run by BP suffered an explosion in the Gulf of Mexico.  Name that rig.
United States offshore drilling debate recently, Russia has begun drilling in the black sea with a Chinese-made oil rig, Scarabeo 9. Since the rig wasn't built in the U.S. and was agreed to before the imposition of additional sanctions by the E.U. in 2014, Russia has been able to avoid sanctions and operate the rig. Offshore facilities pose an environmental risk of oil spills. On April 20, 2010, an underwater blowout and subsequent explosion and fire destroyed the "Deepwater Horizon" rig owned by Transocean Ltd. and operating in the Gulf of Mexico under lease to energy giant BP, resulting in the largest oil spill in
Submersible drilling rig were used to drill in marshes and protected waters in up to 10 feet of water. The "Breton Rig 20" was 160 feet by 85 feet, and could work in 20 feet water depth. By 1958, the number of submersible drilling rigs had increased to around 30. In 1961, Shell Oil successfully converted an existing submersible rig "Blue Water Rig No.1" into the first semi submersible drilling unit for operation in the Gulf of Mexico when it was found to have good stability and motions whilst being towed at a partial draught. Alden J. Laborde designed and constructed the first