Soviet submarine K-56
From Infogalactic: the planetary knowledge core
Soviet submarine K-56 may refer to one of the following submarines of the Soviet Navy:
- Soviet submarine K-56 (1940), a K-class submarine; completed after World War II; sunk in nuclear tests in 1957
- Soviet submarine K-56 (1965), an Echo II-class (or Project 675) nuclear submarine; collided with merchant ship in June 1973, killing 27 men aboard
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