Mark 20
From Infogalactic: the planetary knowledge core
Mark 20 may refer to:
- The Mark 20 nuclear bomb, a planned successor to the Mark 13 nuclear bomb, but never built.
- The US Mark 20 torpedo, an experimental 1943 torpedo abandoned in testing after about 20 units had been built.
- The British Mark 20 Bidder torpedo, in service 1955-1980s.
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