American 21 inch torpedo

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Abstract is: There have been a number of 21-inch torpedoes in service with the United States. These have been used on ships and submarines of the U.S. Navy. American 21-inch torpedoes are 533 millimeters (21 in) in diameter. Ship classes that carried 21-inch torpedoes include: * Allen M. Sumner-class destroyers * Atlanta-class cruisers * Bagley-class destroyers * Balao-class submarines * Barbel-class submarines * Barracuda-class submarines * Benham-class destroyers * Benjamin Franklin-class submarines * Benson-class destroyers * Cachalot-class submarines * Caldwell-class destroyers * Cassin-class destroyers * Chester-class cruisers * Clemson-class destroyers * Colorado-class battleships * Connecticut-class battleships * Dealey-class destroyer escorts * Ethan Allen-class submarines * Farragut-class destroyers * Forrest Sherman-class destroyers * Fletcher-class destroyers * Gato-class submarines * Gearing-class destroyers * George Washington-class submarines * Gleaves-class destroyers * Glenard P. Lipscomb-class submarine * Grayback-class submarines * Gridley-class destroyers * Halibut-class submarine * James Madison-class submarines * John C. Butler-class destroyer escorts * Lafayette-class submarines * Lexington-class battlecruisers - canceled * Los Angeles-class submarines * Mahan-class destroyers * Mitscher-class destroyer leaders * Narwhal-class submarine * Nautilus-class submarine * Norfolk-class destroyer leader * O'Brien-class destroyers * Ohio-class submarines * Omaha-class cruisers * Permit-class submarines * Porter-class destroyers * PT boats * R-class submarines * Rudderow-class destroyer escorts * S-class submarines * Sailfish-class submarines * Sampson-class destroyers * Sargo-class submarines * Seawolf-class submarine (1957) * Seawolf-class submarines (1997) * Sims-class destroyers * Skate-class submarines * Skipjack-class submarines * Somers-class destroyers * South Dakota-class battleships - canceled * Sturgeon-class submarines * T-1-class submarines * Tambor-class submarines * Tang-class submarines * Tench-class submarines * Tennessee-class cruisers * Tucker-class destroyers * Tullibee-class submarine * V-boat submarines * Virginia-class battleships * Virginia-class submarines * Wickes-class destroyers

American 21 inch torpedo is …