British 18-inch torpedo

First introduced into British service in 1894.[1]

• Year : about 1888
• Weight : 845 lb (383 kg)
• Length : 11 ft 8 in (3.56 m)
• Warhead : 118 lb (54 kg) wet gun-cotton
• Performance : 26.5 knots (49.1 km/h; 30.5 mph) for 800 yd (730 m)
• Propulsion : Compressed air

Used on the River-class and 1905 Tribal-class destroyers.

• Year : about 1899[1]
• Weight : 1,353 lb (614 kg)
• Warhead : 296 lb (134 kg) including pistol
• Propulsion : Compressed air

Used on destroyers of the early 1900s.

• Year : about 1904[1]
• Performance : 28.5 knots (52.8 km/h; 32.8 mph) for 4,000 yd (3,700 m) or 41 knots (76 km/h; 47 mph) for 1,000 yd (910 m)
• Propulsion : Compressed air

Introduced on the 1908 members of the 1905 Tribal class destroyers. Used by torpedo boats built before the First World War and destroyers. Used by RAF flying boats in the 1920s.

• Year : 1907[1]
• Warhead : 320 lb (150 kg) TNT
• Performance :
  • Mark VII :
    30 knots (56 km/h; 35 mph) for 6,000–7,000 yd (5,500–6,400 m)
    41 knots (76 km/h; 47 mph) for 3,000 yd (2,700 m)
  • Mark VII* :
    29 knots (54 km/h; 33 mph) for 7,000 yd (6,400 m)
    35 knots (65 km/h; 40 mph) for 5,000 yd (4,600 m)
• Propulsion : Wet-heater

• Year: 1913
• Role: Submarines and aircraft (Note: During World War II and after the Mk.VIII was a 21-inch torpedo)
• Warhead: 320 lb (150 kg) TNT
• Propulsion: Wet heater
• Performance: 35 knots (65 km/h; 40 mph) for 2,500 yd (2,300 m)

• Year: 1934
• Aircraft carried
• Dimensions: 17.72 in (450 mm) dia.
• Warhead: 465 lb (211 kg) TNT
• Propulsion: Burner cycle
• Performance: 35 knots (65 km/h; 40 mph) for 2,500 yd (2,300 m)

18-inch Mark XII
A Mark XII torpedo fitted to a Bristol Beaufighter
Type	Torpedo
Place of origin	United Kingdom
Service history
In service	1937-1945
Production history
Designed	1935
Specifications
Mass	1,548 lb (702 kg)
Length	16 ft 3 in (4.95 m)
Diameter	17.72 in (450 mm)
Warhead	TNT
Warhead weight	388 lb (176 kg)
Engine	Burner cycle 140 hp (at 40 knots)
Maximum speed	40 knots (74 km/h; 46 mph) for 1,500 yd (1,400 m) or 37 knots (69 km/h; 43 mph) for 3,500 yd (3,200 m)

Aircraft launched, used by Fleet Air Arm and RAF Coastal Command.

The Mark XIV was an aircraft-launched torpedo. Stocks were lost with the fall of Singapore.

• Year: 1942
• Operators: Fleet Air Arm, RAF Coastal Command, Royal Navy
• Role: Aircraft and Motor Torpedo Boats, 1943 onwards
• Dimensions: 17.69 in (449 mm) × 17 ft 2.7 in (5.250 m)
• Warhead: 545 lb (247 kg) Torpex
• Propulsion: Burner cycle
• Performance: 40 knots (74 km/h; 46 mph) for 2,500 yd (2,300 m) or 33 knots (61 km/h; 38 mph) for 3,200 yd (2,900 m)[2]

Electric torpedo project not completed.

• United Kingdom, 1944
• Aircraft launched
• Operated by FAA, RAF Coastal Command, Blackburn Firebrand
• Dimensions: 17.72 in (450 mm) × 17 ft 3 in (5.26 m)
• Warhead: 600 lb (270 kg) Torpex
• Propulsion: Burner cycle
• Performance: 40 knots (74 km/h; 46 mph) for 2,500 yd (2,300 m)

Mk 30 Torpedo

An air-dropped passive acoustic homing torpedo known as "Dealer" and "Dealer B".[3]

• Length: 8 ft (2.4 m)[4]
• Weight: 646 lb (293 kg)
• Performance: 12.5 knots (23.2 km/h; 14.4 mph) for 3,000 yd (2,700 m) or 19 knots (35 km/h; 22 mph) for 830 yd (760 m)

• List of torpedoes
• British 21-inch torpedo

• Tony DiGiulian, Pre Second World War torpedoes
• Tony DiGiulian, Torpedoes of the Second World War