The Spearfish torpedo is the heavy torpedo used by the submarines of the Royal Navy. It provides both anti-submarine warfare (ASW) and anti-surface ship warfare (ASuW) capability.
General Characteristics
Speed: 120-130 kilometers per hour (65-70 knots)
Range: 54 kilometers (30 nautical miles) at low speed, 23 kilometers (12.5 nautical miles) at high speed
Length: 7 meters (23 feet)
Diameter: 533mm (21 inches)
Weight: 1850 kilogram (4075 pounds)
Warhead: 300 kilograms (660 pounds) directed energy