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Commercial offshore diving, sometimes shortened to just offshore diving, is a branch of commercial diving, with divers working in support of the exploration and production sector of the oil and gas industry in places such as the Gulf of Mexico in the United States, the North Sea in the United Kingdom and Norway, and along the coast of Brazil. The work in this area of the industry includes maintenance of oil platforms and the building of underwater structures. Equipment used for offshore diving tends to be surface supplied equipment but this varies according to the work and location. For instance, divers in the Gulf of Mexico may use wetsuits whilst North Sea divers need drysuits or even hot water suits because of the low temperature of the water. Saturation diving is standard practice at many of the deeper offshore sites, and allows more effective use of the diver's time while reducing the risk of decompression sickness.〔 The first commercial offshore saturation dive was performed by Westinghouse in the Gulf of Mexico following Hurricane Betsy in March 1966. Not long after, in 1970, saturation diving in the North Sea at Ekofisk commenced. ==Risks== A 7 December 2013 Verdens Gang editorial said that "According to the divers' own numbers, 66 divers died while on duty during the pioneering age" in the North Sea with the first commercial diving casualty occurring as early as October 2, 1967.〔(【引用サイトリンク】url=http://www.regjeringen.no/nb/dep/fad/dok/nouer/2003/nou-2003-5/12.html?id=381706 )〕 One notable accident in 1983 aboard the Byford Dolphin claimed the life of five divers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Commercial offshore diving」の詳細全文を読む スポンサード リンク
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