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UR-100M SLBM

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Status: Design 1964. Payload: 770 kg (1,690 lb). Thrust: 785.00 kN (176,475 lbf). Gross mass: 41,410 kg (91,290 lb). Height: 16.93 m (55.53 ft). Diameter: 2.00 m (6.50 ft). Span: 2.00 m (6.50 ft). Apogee: 1,000 km (600 mi).

Makeyev submitted Chelomei's proposal to withering criticism at a Ministry of Defence meeting in July 1964. The UR-100M was to have radio correction to achieve the necessary accuracy, while Makeyev's missile used autonomous celestial navigation to correct the inertial guidance system. Chelomei envisioned basing mainly on barges or submerged buoys in order to have a known accurate launch position, while Makeyev proposed basing on mobile submarines. Khrushchev at the time was pushing for basing of missile on icebergs as a less-costly alternative to nuclear submarines. The Soviet Navy rejected these alternatives in favor of the same kind of submarine-based deterrent forces the Americans were deploying.

The 8K84M version of the basic UR-100 missile, developed in 1965-1972, is sometimes referred to by Soviet histories as the 'UR-100M' as well.

Maximum range: 11,000 km (6,000 mi). Number Standard Warheads: 1. Standard RV: 15F842. Warhead yield: 500 KT. CEP: 1.40 km (0.80 mi). Alternate warhead: 1,750 kg (3,850 lb). Maximum range with alternate warhead: 4,000 km (2,400 mi). Number Alternate Warheads: 1. Alternate warhead yield: 1,100 KT. Alternate warhead CEP: 1.00 km (0.60 mi). Boost Propulsion: Storable liquid rocket, N2O4/UDMH. Cruise engine: 8D423.