Photo Gallery: The Wreckage of the Cheonan 05/20/2010
 An offshore crane salvages a section of the South Korean naval ship Cheonan...
AP/ Yonhap

An offshore crane salvages a section of the South Korean naval ship Cheonan off Baengnyeong Island, South Korea. On Thursday a multi-national team investigating the sinking of a South Korean military patrol boat on March 26 announced that the Cheonan corvette -- a 1,200 ton gunboat -- had been sunk by a torpedo fired by a North Korean submarine.