. . "54190615"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "1111503673"^^ . . . "American 21-inch torpedo"@en . . . . . . . . . . . . . . . . . . . . . . . . . . "18491"^^ . . . . . . "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: \n* Allen M. Sumner-class destroyers \n* Atlanta-class cruisers \n* Bagley-class destroyers \n* Balao-class submarines \n* Barbel-class submarines \n* Barracuda-class submarines \n* Benham-class destroyers \n* Benjamin Franklin-class submarines \n* Benson-class destroyers \n* Cachalot-class submarines \n* Caldwell-class destroyers \n* Cassin-class destroyers \n* Chester-class cruisers \n* Clemson-class destroyers \n* Colorado-class battleships \n* Connecticut-class battleships \n* Dealey-class destroyer escorts \n* Ethan Allen-class submarines \n* Farragut-class destroyers \n* Forrest Sherman-class destroyers \n* Fletcher-class destroyers \n* Gato-class submarines \n* Gearing-class destroyers \n* George Washington-class submarines \n* Gleaves-class destroyers \n* Glenard P. Lipscomb-class submarine \n* Grayback-class submarines \n* Gridley-class destroyers \n* Halibut-class submarine \n* James Madison-class submarines \n* John C. Butler-class destroyer escorts \n* Lafayette-class submarines \n* Lexington-class battlecruisers - canceled \n* Los Angeles-class submarines \n* Mahan-class destroyers \n* Mitscher-class destroyer leaders \n* Narwhal-class submarine \n* Nautilus-class submarine \n* Norfolk-class destroyer leader \n* O'Brien-class destroyers \n* Ohio-class submarines \n* Omaha-class cruisers \n* Permit-class submarines \n* Porter-class destroyers \n* PT boats \n* R-class submarines \n* Rudderow-class destroyer escorts \n* S-class submarines \n* Sailfish-class submarines \n* Sampson-class destroyers \n* Sargo-class submarines \n* Seawolf-class submarine (1957) \n* Seawolf-class submarines (1997) \n* Sims-class destroyers \n* Skate-class submarines \n* Skipjack-class submarines \n* Somers-class destroyers \n* South Dakota-class battleships - canceled \n* Sturgeon-class submarines \n* T-1-class submarines \n* Tambor-class submarines \n* Tang-class submarines \n* Tench-class submarines \n* Tennessee-class cruisers \n* Tucker-class destroyers \n* Tullibee-class submarine \n* V-boat submarines \n* Virginia-class battleships \n* Virginia-class submarines \n* Wickes-class destroyers"@en . . . "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:"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .