КВ-1S – мобилна

1. Климент Ворошилов (KV) tanks were a series of Soviet heavy tanks named after the Soviet defence commissar and politician Kliment Voroshilov and used by the Red Army during World War II. КВ-1С: In response to criticisms, the lighter KV-1S was developed, with thinner armour and a smaller, lower turret in order to reclaim some speed. Importantly, the KV-1S had a commander’s cupola with all-around vision blocks. It also had a sophisticated planetary transmission that significantly increased the reliability, and allowed use of more efficient regenerative geared steering, unlike the solely clutch and brake steering systems used by the Panzer III, IV and T-34. Its reduced weight allowed it to achieve a top speed of 43.3 km/h.

Източник: KV-1S on Wikipedia