Image: ISU-122 (Red Army Photo)
Vehicle TypeHeavy Assault Gun
Origin & Designer[@designer]
Numbers Produced645
Crew5 (Commander, Gunner, Two Loaders & Driver)
Main Armament1 x 122mm L/45 A-19S Gun
Main Armament[@sponson_traverse]
Elevation-4° to +19°
Turret Traverse[@turret_traverse]
Gun Traverse11° Left & Right (Manual)
Gun Mount[@gun_mounts]
Maximum Range[@maximum_range]
Armour Penetration[@armour_penetration]
Gun SightST-18
Secondary Armament1 x 12.7mm DShK Machine Gun (AA Mount)
Smoke Discharger[@smoke_discharger]
Ammunition Carried30 x 122mm & 500 x 12.7mm
Combat Weight46.000 kg
Ground Clearance0.46m
Fording Depth1.30m
Trench Crossing2.50m
Obstacle Clearance1.0m
Climbing Ability36°
ArmourHull Front: 90mm
Hull Sides 75mm
Hull Rear: 60mm
Hull Top: 30mm
Hull Bottom: 20mm
Gun Compartment:
Gun Mantle: 65mm
Front: 90mm
Sides: 90mm
Rear: 60mm
Top: 30mm
EngineV-2-IS (Diesel)
Transmission4 Forward & 1 Reverse
Maximum Road Range220 km
Maximum Cross Country Range80 km
Maximum Water Range[@maximum_water_range]
Maximum Road Speed37 kph
Maximum Cross Country Speed16 kph
Maximum Water Speed[@maximum_water_speed]
NotesThe ISU-122 (Istrebitelnaja Samokhodnaya Ustanovka) was virtually the same vehicle as the ISU-152, both vehicles were built on the same chassis but sported different guns. This came about due to the lack of available 152mm ML-20S, so vehicles were adapted to mount the 122mm A-19S howitzer. It was used as both a tank destroyer and heavy assault gun and served in independent heavy artillery regiments.