Tags: Weapon.
The R-21 (Russian: Р-21; NATO: SS-N-5 ‘Sark/Serb'; GRAU: 4K55) was a submarine-launched ballistic missile in service with the Soviet Union between 1963 and 1989. It was the first Soviet nuclear missile that could be launched from a submerged submarine and also had twice the range of earlier missiles. It replaced the R-11FM and R-13 (SS-N-4) on many Golf and Hotel class submarines and was in turn superseded by the R-27 (SS-N-6 ‘Serb’) missile carried by Yankee class submarines.
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