Mark 48 torpedo
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The Mark 48 and its improved Advanced Capability variant are American heavyweight submarine-launched torpedoes. They were designed to sink deep-diving nuclear-powered submarines and high-performance surface ships. Wikipedia
Length: 19 ft (5.8 m)
Designed: 1967
Detonation mechanism: proximity fuze
Diameter: 21 in (530 mm)
Engine: swash-plate piston engine; pump jet
Guidance system: Common Broadband Advanced Sonar System
Launch platform: submarine