A so-called 'bubble jet' effect, rather than a direct hit, is likely to have been responsible for sinking the South Korean warship Chon An in the Yellow Sea (West Sea) off the coast of North Korea on 26 March.rnThe chairman of the South Korean team investigating, Yoon Duk-yong, said: "The possibility of an underwater non-contact explosion is bigger than that of an underwater contact explosion, considering the shape of the severed surfaces and conditions.
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