The 24.5" Mark I torpedo was a British
torpedo
A modern torpedo is an underwater ranged weapon launched above or below the water surface, self-propelled towards a target, and with an explosive warhead designed to detonate either on contact with or in proximity to the target. Historically, su ...
carried only on
''Nelson''-class battleships. This was the type of torpedo that
HMS ''Rodney'' fired at the
German battleship ''Bismarck'', "the only known occasion that a battleship fired torpedoes at an enemy battleship."
This torpedo design was the inspiration for the Japanese
Type 93 'Long Lance' torpedoes.
References
{{Use dmy dates, date=June 2017
World War II naval weapons of the United Kingdom
Torpedoes of the United Kingdom