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''See also:'' ''Nuclear submarine accidents'' Eight nuclear submarines have sunk as a consequence of either accident or extensive damage: two from the United States Navy, four from the Soviet Navy, and two from the Russian Navy. Only three were lost with all hands: the two from the United States Navy and one from the Russian Navy. All sank as a result of accident except for ''K-27'', which was scuttled in the Kara Sea when repair was considered impossible and decommissioning was too expensive. The Soviet/Russian submarines all belonged to the Northern Fleet. The Soviet submarine K-129 (Golf II) carried nuclear ballistic missiles when it sank, but as it was a diesel-electric submarine, it is not included in the list. Of the eight sinkings, two were caused by fires, two by explosions of their weapons systems, one by flooding, one by bad weather, and one by scuttling due to a damaged nuclear reactor. The reason for the eighth submarine's sinking is unknown. All of the wrecks are in the Northern Hemisphere; none are in the Indian or Pacific Oceans. ==United States== *''Thresher'' (SSN-593), the first submarine in its class, sank April 10, 1963 during deep-diving trials after flooding, loss of propulsion, and an attempt to blow the emergency ballast tanks failed, causing it to exceed crush depth. All 129 men on board died. Location: east of Cape Cod. *''Scorpion'' (SSN-589), a , sank May 22, 1968, evidently due to implosion upon reaching its crush depth. What caused the ''Scorpion'' to descend to its crush depth is not known. All 99 men on board died. Location: southwest of the Azores. 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「List of sunken nuclear submarines」の詳細全文を読む スポンサード リンク
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