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R-21
R-21
R-21
Credit: © Mark Wade
Russian submarine-launched ballistic missile. First flight 1962. NATO code Serb may apply to SS-N-6 instead. First subsurface launched SLBM (development began at OKB- 586 and transferred to SKB-385).

AKA: 4K55;D-4;K-1;Serb;SS-N-5. Status: Retired 1989. First Launch: 1960-05-01. Last Launch: 1967-01-01. Number: 6 . Payload: 910 kg (2,000 lb). Gross mass: 17,700 kg (39,000 lb). Height: 12.90 m (42.30 ft). Diameter: 1.42 m (4.65 ft). Span: 1.42 m (4.65 ft). Apogee: 300 km (180 mi).

Maximum range: 1,400 km (800 mi). Number Standard Warheads: 1. Warhead yield: 800 KT. CEP: 3.23 km (2.00 mi). Boost Propulsion: Storable liquid rocket. Initial Operational Capability: 1963.

Subtopics
R-21A Russian submarine-launched ballistic missile. Version of R-21 SLBM on Yankee submarines.
Family: Sea-Launched, submarine-launched. Country: Russia. Engines: S5.3. Launch Sites: Black Sea Launch Area. Stages: R-21-1. Agency: Makeyev bureau. Bibliography: 2.
1960 May 1 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. Launch Vehicle: R-21.
1961 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. Launch Platform: S-229. Launch Vehicle: R-21.
1961 October 1 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. Launch Platform: S-229. Launch Vehicle: R-21.
1962 February 24 - . Launch Site: Sea Launch Area. Launch Pad: UNKPL. Launch Platform: HOTEL2. Launch Vehicle: R-21.
1963 - . Launch Site: Sea Launch Area. Launch Pad: UNKPL. Launch Platform: HOTEL2. Launch Vehicle: R-21.
1967 - . Launch Site: Sea Launch Area. Launch Pad: UNKPL. Launch Platform: GOLF2. Launch Vehicle: R-21.
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