The Kaiten (translated "Change the World" or "Reverse Destiny") was a torpedo modified as a suicide weapon, and used by the Imperial Japanese Navy in the final stages of the Second World War.
Early designs allowed for the pilot to escape after the final acceleration toward the target, although whether this could have been done successfully is doubtful. There is no record of any pilot attempting to escape or intending to do so, and this provision was dropped from later production kaitens, so that once inside, the pilot could not let himself out. In the event that an attack failed, the kaiten was fitted with a control for self destruction.
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