Torpedo's
18" (45.7cm) Type 1 Torpedo
- designed: 1916
- in service: 1917
- Range: 4000 yards at 35 knots
- Maximum Speed: 35 knots
- Warhead: 205 lb (93 kg) TNT
- Weight: 1,588 lbs (720 kg)
-power: wet heater
- Guidance: Gyro
Notes: used on most ships of the era
18" (45.7cm) Type 2 Torpedo
- designed: 1917
- in service: 1918
- Range: 2000 yards at 32 knots
- Maximum Speed: 32 knots
- Warhead: 200 lb (90 kg) TNT
- Weight: 1,036 lbs (470 kg)
-power: wet heater
- Guidance: Gyro
Notes: smaller type 1, used for aircraft
18" (45.7cm) Type 3 Torpedo
- designed: 1920
- in service: 1920
- Range: 3500 yards at 35 knots
- Maximum Speed: 35 knots
- Warhead: 319 lb (145 kg) TNT
- Weight: 1,736 lbs (787 kg)
-power: wet heater
- Guidance: Gyro
Notes:
21" (53.3cm) Type 4 Torpedo
- designed: 1916
- in service: 1917
- Range: 15000 yards at 29 knots
- Maximum Speed: 29 knots
- Warhead: 466 lb (211 kg) TNT
- Weight: 3,176 lbs (1,441 kg)
-power: wet heater
- Guidance: Gyro
Notes: first 21" torpedo in service
21" (53.3cm) Type 5 Torpedo
- designed: 1917
- in service: 1918
- Range: 3500 yards at 36 knots
- Maximum Speed: 36 knots
- Warhead: 497 lb (225 kg) TNT
- Weight: 2,215 lbs (1005 kg)
-power: wet heater
- Guidance: Gyro
Notes: early submarine torpedo
21" (53.3cm) Type 6 Torpedo
- designed: 1920
- in service: 1921
- Range: 6000 yards at 46 knots, 15,000 yards at 27 knots
- Maximum Speed: 46 knots
- Warhead: 500 lb (227 kg) TNT
- Weight: 3,521 lbs (1,597 kg)
-power: wet heater
- Guidance: Gyro
Notes: Used on destroyers and cruisers
21" (53.3cm) Type 7 Torpedo
- designed: 1927
- in service: 1928
- Range: 7000 yards at 44 knots, 15,000 yards at 27 knots
- Maximum Speed: 44 knots
- Warhead: 500 lb (227 kg) TNT
- Weight: 3,505 lbs (1,590 kg)
-power: wet heater
- Guidance: Gyro
Notes: modified type 6, reduced speed to improve reliability
21" (53.3cm) Type 8 Torpedo
- designed: 1929
- in service: 1930
- Range: 4500 yards at 46 knots, 9000 yards at 30 knots
- Maximum Speed: 46 knots
- Warhead: 507 lb (230 kg) TNT
- Weight: 3,000 lbs (1,361 kg)
-power: wet heater-steam turbine
- Guidance: Gyro
Notes: used on submarines
21" (53.3cm) Type 9 Torpedo
- designed: 1931
- in service: 1932
- Range: 6000 yards at 45 knots, 10000 yards at 33 knots, 15000 yards at 27 knots
- Maximum Speed: 45 knots
- Warhead: 494 lb (224 kg) TNT
- Weight: 3,438 lbs (1,550 kg)
-power: wet heater-steam turbine
- Guidance: Gyro
Notes: used on cruisers and destroyers
21" (53.3cm) Type 10 Torpedo
- designed: 1933
- in service: 1934
- Range: 4500 yards at 45 knots, 9000 yards at 33 knots, 14000 yards at 27 knots
- Maximum Speed: 45 knots
- Warhead: 801 lb (363 kg) TNT
- Weight: 3,841 lbs (1,742 kg)
-power: wet heater-steam turbine
- Guidance: Gyro
Notes: Modified type 9 with larger warhead and slightly shorter range, used on cruisers and destroyers
21" (53.3cm) Type 11 Torpedo
- designed: 1942
- in service: 1943
- Range: 18000 yards at 46 knots
- Maximum Speed: 45 knots
- Warhead: 880 lb (399 kg) HBX
- Weight: 4,800 lbs (2,177 kg)
-power: Hydrogen Peroxide turbine
- Guidance: Gyro
Notes: used on cruisers and destroyers
21" (53.3cm) Type 12 Torpedo
- designed: 1942
- in service: 1943
- Range: 11500 yards at 21 knots
- Maximum Speed: 45 knots
- Warhead: 960 lb (435 kg) HBX
- Weight: 3,922 lbs (1,799 kg)
-power: Hydrogen Peroxide turbine
- Guidance: Gyro
Notes: used on submarines
19" (48.3cm) Type 14 Torpedo
- designed: 1942
- in service: 1943
- Range: 4000 yards at 12 knots
- Maximum Speed: 45 knots
- Warhead: 92 lb (42 kg) HBX
- Weight: 680 lbs (308 kg)
-power: Electric battery
- Guidance: Passive Acoustic Homing
Notes: used on aircraft, homing was by four crystal hydrophones arranged around the body with simple guidance system that steered towards the loudest noise. Launch parameters were 125 knots from 250 feet (76 m).[/font]
21" (53.3cm) Type 15 Torpedo
- designed: 1943
- in service: 1945
- Range: 4000 yards at 48 knots, 12000 yards at 21 knots
- Maximum Speed: 48 knots
- Warhead: 550 lb (249 kg) HBX
- Weight: 3,200 lbs (1,452 kg)
-power: Electric battery
- Guidance: Passive Acoustic
Notes: used on subs