Development began in 1969 of a common surface-to-air missile with 75 km range for the PVO (designated S-300PMU) and the VMF (Rif). B V Bunkin at NPO Almaz was responsible for development of the system for the PVO and land forces, and V A Bukatov at NPO Altair was responsible for development of the system for the Navy. They both would use the 5V55R missile being developed by Grushin. The naval Rif (Fort) system of the navy used the 5V55RM version of the missile, developed by MKB Fakel. This differed from the 5V55R land version only in details of the launch container.
Rif, capable of attacking six targets simultaneously, was the first mutl-target surface-to-air missile developed in the USSR. The system used a multi-purpose phased-array radar, which also provided the illumination beam for the semi-active radar homing missiles to home in on the target. The system used an electronic computer, capable of tracking six targets simultaneously and guiding two rockets to each target at the same time. The missiles were command-guided until near the target, when their on-board semi-active homing systems took over. The Rif surface-to-air missile was first deployed on type 1144 and 1164 cruisers beginning in 1984.
Radars: MR-750 Top Steer target acquisition radar, D/E band, range 300 km. Top Pair target acquisition radar, C/D band, range 200 km. 3R41 Volna Top Dome target tracking radar, I/J band, range 100 km.
Standard warhead: 133 kg (293 lb). Maximum range: 90 km (55 mi). Boost Propulsion: Solid rocket. Maximum speed: 6,120 kph (3,800 mph). Minimum range: 7.00 km (4.30 mi). Initial Operational Capability: 1984. Floor: 25 m (82 ft).
AKA: SA-N-6; Fort; 3M41; S-300F; Grumble; Rif; 5V55RM.
Location: Moscow, Russian Federation.
Payload: 133 kg (293 lb).
Height: 7.25 m (23.78 ft).
Apogee: 25 km (15 mi).