IS-3

IS-3
IS-3
	IS-3 tank in a museum in Brussels
Type	Heavy tank
Place of origin	Soviet Union
Service history
In service	1945−1980s
Used by	See Operators
Wars	Hungarian Revolution; Six-Day War; Yom Kippur War; War in Donbas;
Production history
Designed	1944
Manufacturer	Factory No.100 Kirovskiy Works
Unit cost	350,000 Rbls
Produced	1945–47
No. built	2,311
Variants	IS-3M
Specifications
Mass	45,800 kg (101,000 lb)
Length	9.725 m (31.91 ft)
Width	3.07 m (10.1 ft)
Height	2.44 m (8 ft 0 in)
Crew	4 (commander/radio operator, gunner, loader, driver)
Armor	120 mm (4.7 in) at 55° (hull front); 60 mm (2.4 in) at 60° (sides); 25–45 mm (0.98–1.77 in) (roof); 20–35 mm (0.79–1.38 in) (floor); 60–90 mm (2.4–3.5 in) (rear); 200 mm (7.9 in) (turret front mantlet);
Main; armament	122mm Gun D-25 (28 rounds)
Secondary; armament	7.62mm DTM MG (coaxial, 1500 rounds); 1 × 12.7mm DShK MG (AA, 250 rounds);
Engine	V-2-IS (V2K) V-12 water-cooled diesel; 520 hp (390 kW) at 2000 rpm
Power/weight	11.35 hp/tonne (8.46 kW/tonne)
Transmission	4 forward, 1 reverse
Suspension	torsion bar
Ground clearance	0.46 m (1 ft 6 in)
Fuel capacity	520 L (110 imp gal; 140 US gal)
Operational; range	150 km (93 mi)
Maximum speed	37 km/h (23 mph)
References

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. Produced too late to see combat in World War II, the IS-3 participated in the Berlin Victory Parade of 1945, the Soviet invasion of Hungary, the Six-Day War, Yom Kippur War, and one was used during the early stages of the Russo-Ukrainian War.