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Pisces-class deep submergence vehicle : ウィキペディア英語版 | Pisces-class deep submergence vehicle
''Pisces class submersibles'' are three person research deep-submergence vehicles designed and built by Hyco International Hydrodynamics of North Vancouver in British Columbia with a maximum operating depth of 2,000 m (6,560 ft). The vehicles have multiple view ports, sample collecting, environmental sensing, and instrument placement capabilities. The pressure hull has an inside diameter and is made of HY-100 steel with 3 forward-looking acrylic windows, in diameter. Designed by Alan Trice, the ''Pisces'' series of submersibles are representative of early manned submersibles built in the late 1960s and were proven workhorses in offshore exploration and oceanographic research. ''Pisces II'' was the first production model of the design and was completed in 1968, with 9 more ''Pisces'' subs built before the manufacturer folded in the late 1970s. ==1973 ''Pisces'' III rescue==
''Pisces III'' was used to lay transatlantic telephone cable on the sea bottom off Ireland in 1973. When a buoyancy tank was inadvertently flooded, it sank to the bottom of the ocean with its two-man crew, Britons Roger Mallinson and Roger Chapman, stranded at a depth of and 72 hours of available life support, which they were able to extend to 76 hours by careful conservation. Initial rescue efforts by ''Pisces III'' sister submersibles were unsuccessful. Through an international effort of the United States, Canada, and Great Britain, the U.S. Navy Cable-controlled Undersea Recovery Vehicle (CURV-III) was deployed within 24 hours 6,000 miles from its home base. Deployment of CURV-III from CCGS ''John Cabot'' was hampered by heavy sea conditions. Rapid repairs were made when CURV-III’s gyroscope failed and electronics shorted-out after green water came aboard the ''Cabot''. Assisted by the submersibles ''Pisces II'' and ''Pisces V'', CURV-III was able to attach lines to the ''Pisces'' III hatch. The ''Cabot'' raised CURV-III at per minute until their lines entangled. The lines were cut, CURV-III was abandoned, and ''Pisces III'' was floated to where scuba divers were able to attach lines that were used to lift ''Pisces III'' the rest of the way to the surface. CURV-III performed the deepest underwater rescue in history when ''Pisces III''’s two-man crew was rescued after 76 hours with just 12 minutes of air remaining.〔〔〔〔
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「Pisces-class deep submergence vehicle」の詳細全文を読む
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