American 21-inch torpedo explained

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 5330NaN0 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

width=10%	Name	Country	width=5%	In service date	width=15%	Platform / target	width=15%	Dimensions	width=15%	Warhead	width=10%	Propulsion	width=25%	Performance
		1904–1922	Surface / Surface	Diameter: 21inches Length: 16.4feet Weight: 1500lb		Single vertical turbine wheel	Speed: 27kn Range: 4000yd
		1905–1922	Surface / Surface	Diameter: 21inches Length: 16.4feet Weight: 1500lb		Turbine (contra-rotating)	Speed: 26kn Range: 3500yd
		1906–1922	Surface / Surface	Diameter: 21inches Length: 16.4feet Weight: 1500lb		Turbine (contra-rotating)	Speed: 26kn Range: 4000yd
		1911–1945	Surface / Surface	Diameter: 21inches Length: 21.3feet Weight: 2600lb		Turbine	Speed: 36kn Range: 16000yd
		1915–1945	Surface & submarine / Surface	Diameter: 21inches Length: 16.4feet Weight: 2015lb		Turbine	Speed: 27kn Range: 7000yd
		1915–1945	Submarine / Surface	Diameter: 21inches Length: 16.2feet Weight: 2215lb		Steam turbine	Speed: 36kn Range: 3500yd
		1926–1945	Surface / Surface	Diameter: 21inches Length: 22.6feet Weight: 3511lb		Turbine	Low: 27kn Range: 15000yd Medium: 34kn Range: 10000yd High: 46kn Range: 6000yd
		1928–1945	Surface / Surface	Diameter: 21inches Length:22.6feet Weight: 3505lb		Turbine	Low: 27.5kn Range: 15000yd Medium: 35.5kn Range: 10000yd High: 44kn Range: 7000yd
		1938	Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3209lb	Mod.0: 507lb TNT Mod.6: 643lb Torpex	Turbine	Mod.0: Low: 31.1kn Range: 9000yd Mod.3: Low: 31.1kn Range: 9000yd High: 46.3kn Range: 4500yd
		1938–1956	Surface / Surface	Diameter: 21inches Length: 24feet Weight: 3841lb	Mod 0: 494lb TNTMod.3: 801lb TNT or 825lb HBX	Turbine	Mod.0: Low: 26.5kn Range: 15000yd Medium: 33.5kn Range: 10000yd High: 45kn Range: 6000yd Mod.3: Low: 26.5kn Range :14000yd Medium: 33.5kn Range: 9000yd High: 45kn Range: 4500yd
		1943–1975	Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3895lb Mod.1: 3922lb Mod.3: 4000lb Mod.8: 4155lb	Mk.16 Mod.7Mod.0: 1260lb Torpex Mod.1 and 3: 746lb Torpex or HBX (later used HBX-3) 960lb Torpex (later used HBX) Mod.8: 1260lb HBX	Turbine	Mod.0: Speed: NaNkn Range: 7000yd Mod.1: Range: NaNyd Mod.3: Range: 13700yd Mod.8: same range as Mod.1 or Mod.3
		1944–1950	Surface / Surface	Diameter: 21inches Length: 24feet Weight: 4600lb		Turbine	Speed: 46.5kn Range :18000yd
		1943–1950	Submarine / Surface	Diameter: 21inches Length:20.4feet Weight: 3154lb		Electric	Speed: 29kn Range:4000yd
			Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3240lb		Electric, secondary battery	Speed: 29kn Range: 4000yd
			Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3100lb		Electric motor	Speed: 33kn Range: 3500yd
			Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3060lb		Electric	Speed :29kn Range :4000yd
		1943–1946	Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3259lb		Turbine	Speed: 46.3kn Range : 4500yd
			Submarine / Surface	Diameter:21inches Length: 20.5feet Weight: 3200lb		Electric, seawater battery	Speed: 40kn Range: 6000yd
		1944–1960	Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 2800lb		Electric	Speed: 19.6kn Range: 4000yd
			Submarine / Surface	Diameter: 21inches Length: 20.5feet Weight: 3200lb		Electric	Low: 21kn Range: 12000yd High: 28kn Range:4000yd
			Surface / Surface	Diameter: 21inches Length: 20.5feet Weight: 2800lb		Electric	Speed: 29kn Range: 4000yd
			Submarine & Aircraft / Submarine & surface	Diameter: 21inches Length: 6.9feet Weight: 1795lb		Electric	Low: 12.5kn Range: 19000yd High: 18.5kn Range: 5000yd
		1949–1960	Surface / Surface	Diameter: 21inches Length: 6.9feet Weight: 1770lb		Electric, primary seawater battery	Speed: 27kn Range: 15000yd
		1949–1960	Surface / Surface	Diameter: 21inches Length: 20.5feet Weight: 4000lb		Electric	Speed: 47kn Range: 7000yd
		1950–1959	Aircraft / Submarine	Diameter: 21inches Length: 10feet Weight: 1327lb		Electric, seawater battery	Speed: 25kn Range:8000yd
		1963–1976	Submarine / Submarine & surface	Diameter: 21inches Length: 18.9feet Weight: 2400lb		Electric	Speed: 40kn Range: 15000yd
Mark 45 Mod 1		1976-?	Submarine / Submarine & surface	Diameter: 21inches Length: 18.9feet Weight:2400lb	conventional	Electric	Speed: 40kn Range: 15000yd
		1972–present	Submarine / Submarine & surface	Diameter: 21inches	650 lbs	Piston engine, pump jet

See also

• American 18-inch torpedo

External links

• Torpedo history, part 2, Naval History & Heritage Command
• Navweaps links: US Torpedoes main page, Pre-World War II, Post-World War II