American 21 inch torpedo

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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 US Navy. American "21 inch" torpedoes are actually 21 inch (533 mm) in diameter.

Ship classes that carried 21 inch torpedoes include:

Name Country In service date Platform / target Dimensions Warhead Propulsion Performance
Mark 1 (Bliss-Leavitt)  US 1904-1922 Surface / Surface Diameter:21 in (53 cm)
Length:16.4 ft (5.0 m)
Weight:1,500 lb (680 kg)
200 lb (91 kg)
Guncotton
Single vertical turbine wheel Speed:27 kn (50 km/h)
Range:4,000 yd (3.7 km)
Mark 2 (Bliss-Leavitt)  US 1905-1922 Surface / Surface Diameter:21 in (53 cm)
Length:16.4 ft (5.0 m)
Weight:1,500 lb (680 kg)
200 lb (91 kg)
Guncotton
Turbine (contra-rotating) Speed:26 kn (48 km/h)
Range:3,500 yd (3.2 km)
Mark 3 (Bliss-Leavitt)  US 1906-1922 Surface / Surface Diameter:21 in (53 cm)
Length:16.4 ft (5.0 m)
Weight:1,500 lb (680 kg)
200 lb (91 kg)
Guncotton
Turbine (contra-rotating) Speed:26 kn (48 km/h)
Range:4,000 yd (3.7 km)
Mark 8 (Bliss-Leavitt)  US 1911-1945 Surface / Surface Diameter:21 in (53 cm)
Length:21.3 ft (6.5 m)
Weight:2,600 lb (1,200 kg)
Mk.8 Mod 4
466 lb (211 kg)
TNT
Turbine Speed:36 kn (67 km/h)
Range:16,000 yd (15,000 m)
Mark 9 (Bliss-Leavitt)  US 1915-1945 Surface & submarine / Surface Diameter:21 in (53 cm)
Length:16.4 ft (5.0 m)
Weight:2,015 lb (914 kg)
Mk.9
210 lb (95 kg)
TNT
Turbine Speed:27 kn (50 km/h)
Range:7,000 yd (6,400 m)
Mark 10  US 1915-1945 Submarine / Surface Diameter:21 in (53 cm)
Length:16.2 ft (4.9 m)
Weight:2,215 lb (1,005 kg)
Mk.10 Mod.3
497 lb (225 kg)
TNT
Steam turbine Speed:36 kn (67 km/h)
Range:3,500 yd (3,200 m)
Mark 11  US 1926-1945 Surface / Surface Diameter:21 in (53 cm)
Length:22.6 ft (6.9 m)
Weight:3,511 lb (1,593 kg)
Mk.11
500 lb (230 kg)
TNT
Turbine Low:27 kn (50 km/h)
Range:15,000 yd (14,000 m)
Medium:34 kn (63 km/h)
Range:10,000 yd (9,100 m)
High:46 kn (85 km/h)
Range:6,000 yd (5,500 m)
Mark 12  US 1928-1945 Surface / Surface Diameter:21 in (53 cm)
Length:22.6 ft (6.9 m)
Weight:3,505 lb (1,590 kg)
Mk.11
500 lb (230 kg)
TNT
Turbine Low:27.5 kn (50.9 km/h)
Range:15,000 yd (14,000 m)
Medium:35.5 kn (65.7 km/h)
Range:10,000 yd (9,100 m)
High:44 kn (81 km/h)
Range:7,000 yd (6,400 m)
Mark 14  US 1938 Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,209 lb (1,456 kg)
Mk.16 Mod.6
643 lb (292 kg)
HBX
Turbine Low:31.1 kn (57.6 km/h)
Range:9,000 yd (8,200 m)
High:46.3 kn (85.7 km/h)
Range:4,500 yd (4,100 m)
Mark 15  US 1938-1956 Surface / Surface Diameter:21 in (53 cm)
Length:24 ft (7.3 m)
Weight:3,841 lb (1,742 kg)
Mk.7 Mod.3
825 lb (374 kg)
HBX
Turbine Low:26.5 kn (49.1 km/h)
Range:15,000 yd (14,000 m)
Medium:33.5 kn (62.0 km/h)
Range:10,000 yd (9,100 m)
High:45 kn (83 km/h)
Range:6,000 yd (5,500 m)
Mark 16  US 1943-1975 Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:4,000 lb (1,800 kg)
Mk.16 Mod.7
746 lb (338 kg)
HBX
Turbine Speed:46.2 kn (85.6 km/h)
Range:11,000 yd (10,000 m)
Mark 17  US 1944-1950 Surface / Surface Diameter:21 in (53 cm)
Length:24 ft (7.3 m)
Weight:4,600 lb (2,100 kg)
Mk.17 Mod.3
879.5 lb (398.9 kg)
HBX
Turbine Speed:46 kn (85 km/h)
Range:18,000 yd (16,000 m)
Mark 18  US 1943-1950 Submarine / Surface Diameter:21 in (53 cm)
Length:20.4 ft (6.2 m)
Weight:3,154 lb (1,431 kg)
Mk.18 Mod.3
575 lb (261 kg)
HBX
Electric Speed:29 kn (54 km/h)
Range:4,000 yd (3,700 m)
Mark 19  US Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,240 lb (1,470 kg)
Mk.20
800 lb (360 kg)
Torpex
Electric, secondary battery Speed:29 kn (54 km/h)
Range:4,000 yd (3,700 m)
Mark 20  US Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,100 lb (1,400 kg)
Mk.20
500 lb (230 kg)
TNT
Electric motor Speed:33 kn (61 km/h)
Range:3,500 yd (3.2 km)
Mark 22  US Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,060 lb (1,390 kg)
500 lb (230 kg)
HBX
Electric Speed:29 kn (54 km/h)
Range:4,000 yd (3.7 km)
Mark 23  US 1943-1946 Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,259 lb (1,478 kg)
Mk.16 Mod.6
643 lb (292 kg)
HBX
Turbine Speed:46.3 kn (85.7 km/h)
Range:4,500 yd (4.1 km)
Mark 26  US Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,200 lb (1,500 kg)
Mk.26
410–450 kg (900–1,000 lb)
HBX
Electric, seawater battery Speed:40 kn (74 km/h)
Range:6,000 yd (5.5 km)
Mark 28  US 1944-1960 Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:2,800 lb (1,300 kg)
Mk.28 Mod.2
585 lb (265 kg)
HBX
Electric Speed:19.6 kn (36.3 km/h) for 6 minutes at 4,000 yd (3.7 km)
Mark 29  US Submarine / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:3,200 lb (1,500 kg)
Mk.28 Mod.2
550 lb (250 kg)
HBX
Electric Low:21 kn (39 km/h)
Range:12,000 yd (11,000 m)
High:28 kn (52 km/h)
Range:4,000 yd (3,700 m)
Mark 31  US Surface / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:2,800 lb (1,300 kg)
Mk.31
500 lb (230 kg)
HBX
Electric Speed:29 kn (54 km/h)
Range:4,000 yd (3.7 km)
Mark 33 Mod 0  US Submarine & Aircraft / Submarine & surface Diameter:21 in (53 cm)
Length:6.9 ft (2.1 m)
Weight:1,795 lb (814 kg)
550 lb (250 kg)
HBX
Electric Low:12.5 kn (23.2 km/h)
Range:19,000 yd (17,000 m)
High:18.5 kn (34.3 km/h)
Range:5,000 yd (4,600 m)
Mark 35  US 1949-1960 Surface / Surface Diameter:21 in (53 cm)
Length:6.9 ft (2.1 m)
Weight:1,770 lb (800 kg)
Mk.35 Mod.2 or 3
270 lb (120 kg)
HBX
Electric, primary seawater battery Speed:27 kn (50 km/h)
Range:15,000 yd (14 km)
Mark 36 Mod 0  US 1949-1960 Surface / Surface Diameter:21 in (53 cm)
Length:20.5 ft (6.2 m)
Weight:4,000 lb (1,800 kg)
Mk.36
800 lb (360 kg)
HBX-1
Electric Speed:47 kn (87 km/h)
Range:7,000 yd (6.4 km)
Mark 41 Mod 0  US 1950-1959 Aircraft / Submarine Diameter:21 in (53 cm)
Length:10 ft (3.0 m)
Weight:1,327 lb (602 kg)
Mk.41
150 lb (68 kg)
HBX
Electric, seawater battery Speed:25 kn (46 km/h)
Range:8,000 yd (7.3 km)
Mark 45 Mod 1  US 1963-1976 Submarine / Submarine & surface Diameter:21 in (53 cm)
Length:18.9 ft (5.8 m)
Weight:2,400 lb (1,100 kg)
Nuclear Electric Speed:40 kn (74 km/h)
Range:15,000 yd (14 km)
Mark 48  US 1972-present Submarine / Submarine & surface Diameter:21 in (53 cm) 650 lbs Piston engine, pump jet

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