| Year | 1943 |
| Vehicle Type | Heavy Assault Gun |
| Origin & Designer | [@designer] |
| Numbers Produced | 645 |
| Crew | 5 (Commander, Gunner, Two Loaders & Driver) |
| Main Armament | 1 x 122mm L/45 A-19S Gun |
| Main Armament | [@sponson_traverse] |
| Elevation | -4° to +19° |
| Turret Traverse | [@turret_traverse] |
| Gun Traverse | 11° Left & Right (Manual) |
| Gun Mount | [@gun_mounts] |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Gun Sight | ST-18 |
| Secondary Armament | 1 x 12.7mm DShK Machine Gun (AA Mount) |
| Smoke Discharger | [@smoke_discharger] |
| Ammunition Carried | 30 x 122mm & 500 x 12.7mm |
| Height | 2.50m |
| Width | 3.25m |
| Length | 6.77m |
| Combat Weight | 46.000 kg |
| Ground Clearance | 0.46m |
| Fording Depth | 1.30m |
| Trench Crossing | 2.50m |
| Obstacle Clearance | 1.0m |
| Climbing Ability | 36° |
| Radio | 10R |
| Armour | Hull 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 |
| Engine | V-2-IS (Diesel) |
| Transmission | 4 Forward & 1 Reverse |
| Maximum Road Range | 220 km |
| Maximum Cross Country Range | 80 km |
| Maximum Water Range | [@maximum_water_range] |
| Maximum Road Speed | 37 kph |
| Maximum Cross Country Speed | 16 kph |
| Maximum Water Speed | [@maximum_water_speed] |
| Variants | [@variants] |
| Notes | The 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. |