ISU-122 Heavy Assault Gun

In September 1943 went into production a new IS-1 (IS-2) heavy tank Although similar in appearance to the KW tanks, the IS has new engine, new transmission and better armored protection. On the new tank chassis was mounted 152 mm Mk.1937/43 gun-howitzer or Mk.1931/43 122 mm gun. End of 1943 began serial production a new ISU-152/ISU-122 self propelled guns. Since summer 1944 ISU-122 was used by Polish Army.
In museum since 1988 (example without gun).

Front armor with brackets for the spare track

Technical data

Weight: 45.5 t
Length / Carriage Length: 9.85 m / 6.77 m
Width: 3.07 m
Height: 2.48 m
Crew: 5 men
Armament: Mk.1931/43, 122 mm gun (30 rounds)
Armor: 90 - 22 mm
Powerplant: W-2IS, 12 cylinder V in-line diesel engine, 520 hp at 2000 rpm
Maximum Speed: 35 kph