This is a US Navy Spruance-class destroyer sinking in mere minutes after being hit by the latest version of a Mk 48: a heavyweight torpedo which, as you can see in this video, can wipe a whole ship out of the water in a single strike. This version, developed by the US and Australia, has new sonar enhancements that make it an "effective weapon in shallow water and in a countermeasure environment." The footage was taken to demonstrate its capabilities during the Rim of the Pacific 2008 naval exercise. Obviously, with frightening success (at least for someone who is looking to go to NYC in a freighter ship soon.) [Ares and BBC]