ISU-122

ISU-122
ISU-122
	Polish ISU-122
Type	Self-propelled gun
Place of origin	Soviet Union
Production history
No. built	2,410 (all types)
Specifications
Mass	45.5 tonnes (50.2 short tons; 44.8 long tons)
Length	9.85 m (32 ft 4 in)
Width	3.07 m (10 ft 1 in)
Height	2.48 m (8 ft 2 in)
Crew	4 or 5
Armor	front 90 mm (3.5 in); gun shield 120 mm (4.7 in); side 90 mm (3.5 in)
Main; armament	A-19S 122 mm gun, with 30 rounds (ISU-122); D-25S 122 mm gun (ISU-122S);
Secondary; armament	12.7 mm DShK AA machine gun, with 250 rounds
Engine	12-cyl. 4-stroke diesel model V-2IS; 520 hp (382 kW)
Power/weight	11 hp/tonne
Suspension	torsion bar
Operational; range	Road: ; 220 km (140 mi); Cross-country: ; 80 km (50 mi)
Maximum speed	37 km/h (23 mph)

The ISU-122 (acronym of Istrebitelnaja - or Iosif Stalin-based - Samokhodnaya Ustanovka 122) was a Soviet assault gun used during World War II, mostly in the anti-tank role.

^ Soviet Tanks and Combat Vehicles of World War Two (Steven J. Zaloga, James Grandsen) page 179.