At 9:00 on July 1, 1946, the weapon was dropped from the B-29 Superfortress Dave's Dream (formerly Big Stink of the 509th Composite Group) and detonated 158 m above the target fleet, with a yield of 23 kilotons. Five ships were sunk. Two attack transports sank immediately, two destroyers within hours, and one Japanese cruiser the following day. Read more
Operation Crossroads was a series of nuclear weapon tests conducted by the United States at Bikini Atoll in mid-1946. Its purpose was to investigate the effect of nuclear weapons on naval ships. The series consisted of two detonations, each with a yield of 23 kilotons: Able was detonated at an altitude of 158 m on July 1, 1946; Baker was detonated 27 m underwater on July 25, 1946. Read more