2P25 Kub (Cube). GRAU classification: 2K12. NATO reporting name: SA-6 “Gainful”
The 2K12 “Kub” (Russian: 2К12 Куб; English: “cube”) mobile surface-to-air missile system is a Soviet low to medium-level air defence system designed to protect ground forces from air attack.
Each 2K12 battery consists of a number of similar tracked vehicles, one of which carries the 1S91 (SURN vehicle, NATO designation “Straight Flush”) 25 kW G/H band radar (with a range of 75 km) equipped with a continuous wave illuminator, in addition to an optical sight.
In 1974-1975, further modernization of the 2K12 complex was carried out. At the end of 1976, the 2K12M3 Kub-M3 air defense system entered service. Compared with previous versions, the 2K12M3 had expanded boundaries of the affected area, it became possible to fire “in pursuit” at targets at speeds up to 300 m/s, the average flight speed of missiles was increased to 700 m/s, it became possible to destroy aircraft maneuvering with overloads up to 8 g, improved noise immunity of the homing head, the near boundary of the affected area is reduced, the probability of hitting targets is increased by 10-15%.
Development bureau: OKB-15 (Zhukovsky, USSR)
Designer: V. V. Tikhomirov
Assembly: Машиностроительный завод имени Калинина (Ekaterinburg, USSR)
Years of production: 1965—1983
In service: 1967— (2K12M3, from 1976)
Fire range: 25 km
Altitude range: 200-8100 m
Weight: 20 t
Armament: 3 × 3M9M3 or 3M9