IS-3

The IS-3 (also known as Object 703) is a Soviet heavy tank developed in late 1944. Its semi-hemispherical cast turret (resembling that of an upturned soup bowl) became the hallmark of post-war Soviet tanks. Its pike nose design would also be mirrored by other tanks of the IS tank family such as the IS-7 and T-10. Too late to see combat in World War II, the IS-3 participated in the Berlin Victory Parade of 1945, in the border conflict during the Sino-Soviet split, the Soviet invasion of Hungary, the Prague Spring, on both sides during the Six-Day War, and in very limited capacity during the Russo-Ukraine War.

This article is about the Soviet tank. For other uses, see IS-3 (disambiguation).
IS-3
IS-3 tank in a museum in Brussels
TypeHeavy tank
Place of originSoviet Union
Service history
In service1945 - present (various sources)
Used by
  • Soviet Union
  • Egypt
  • Hungary
  • Georgia
  • North Korea
Wars
Production history
Designed1944
ManufacturerFactory No.100 Kirovskiy Works
Produced1945–47
No. built2,311 (Total)
VariantsIS-3M
Specifications
Mass46,500 kg (102,500 lb) (combat)
Length9.85 m (32.3 ft)
Width3.15 m (10.3 ft)
Height2.45 m (8 ft 0 in)
Crew4 (commander/radio operator, gunner, loader, driver)
Caliber122mm
Armor110 mm (4.3 in) (hull front)
Main
armament
122mm Gun D-25 (28 rounds)
Secondary
armament
  • 7.62mm DT MG (coaxial, 1000 rounds)
  • 1 × 12.7mm DShK MG (AA, 945 rounds)
EngineKharkiv model V-2 (V-2K) (diesel)
600hp@2000rpm
Power/weight11.0 hp/tonne
Transmission4 forward, 1 reverse
Operational
range
150 km (93 mi)/120 km (75 mi) (on/off-road)
Maximum speed 37 km/h (23 mph)/19 km/h (12 mph) (on/off-road)
References
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