Category:Mark 24 FIDO

Mark 24 Mine 

anti-submarine warfare weapon
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Instance of	weapon model
Subclass of	torpedo model acoustic torpedo
Manufacturer	General Electric
Service entry	March 1943
Service retirement	1948
Total produced	4,000
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The Mark 24 mine (also known as FIDO or Fido) was an air-dropped passive acoustic homing anti-submarine torpedo used during the Second World War by the United States. It entered service in March 1943 and continued in service with the U.S. Navy until 1948. Approximately 4,000 torpedoes were produced, sinking 37 and damaging a further 18 submarines out of a total of 204 fired. The torpedo was also supplied to the British and Canadian forces. The deceptive name of "Mark 24 mine" was deliberately chosen for security purposes, to conceal the true nature of the weapon.