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| Uniqueness | The IS-3 is the last Soviet heavy tank created during the Great Patriotic War.
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| Manufacturer country | USSR
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| Production year | 1945
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| Uniqueness | Common
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| Epoch | Times of war
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| type | Heavy tank
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| Seriality | 2,311-2,315 units
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| Crew | 4 people
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| Combat weight | 49 t
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| Mobility |
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| Engine | V-shaped, four-stroke, 12-cylinder, liquid-cooled, diesel V-54K-IS3
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| Engine power | 520 h.p.
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| Maximum speed | 40 km / h
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| Power reserve | 450 km
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| Armament |
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| cannon | 122-mm gun D-25T / 28 rounds
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| machine guns | 12.7 mm DShK / 250 rounds 12.7 mm machine gun
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| machine guns | 7.62 mm machine gun DT / 950 rounds 7.62 mm
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| Firing range (maximum) | 15 km
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| Armor |
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| body forehead | 120 mm
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| hull side | 90 mm
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| hull feed | 60 mm
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| turret | 230/75 mm
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| Means of communication | radio station R-113, tank intercom R-120
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| Design feature | turret - cast, flattened spherical shape, designer G.V. Twisted. A streamlined body with differentiated armor protection and a rational angle of inclination of armor plates in the frontal part in the form of a “pike nose” trihedron.
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| Combat use | The new tank did not take part in the battles of the Great Patriotic War. The baptism of fire of machines in the Soviet Army took place in 1956 in Hungary. In the post-war period, a small number of IS-3 tanks were delivered to the DPRK and Egypt.
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