18 Inch Mark XV
- Year: 1942
- Operators: Fleet Air Arm, RAF Coastal Command, Royal Navy
- Role: Aircraft and Motor Torpedo Boats, 1943 onwards
- Dimensions: 17.72 in (450 mm) × 17 ft 3 in (5.26 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 3,500 yd (3,200 m)
Read more about this topic: British 18 Inch Torpedo
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