IS-1

E419775

Soviet heavy tank prototype World War II tank

IS-1 was a Soviet heavy tank prototype developed during World War II that led to the production IS series of heavy tanks.

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All labels observed (1)

Label	Occurrences
IS-1 canonical	1

Predicate	Object
instanceOf	Soviet heavy tank prototype ⓘ World War II tank ⓘ
alternativeName	IS-85 ⓘ
armamentPrimary	85 mm D-5T tank gun ⓘ
armamentSecondary	12.7 mm DShK machine gun ⓘ 7.62 mm DT machine gun ⓘ
armorType	rolled homogeneous armor ⓘ
category	prototype tank ⓘ
chassisDerivedFrom	KV-13 prototype ⓘ
conflict	World War II ⓘ
countryOfOrigin	Soviet Union ⓘ
crew	4 ⓘ
designedAs	breakthrough tank ⓘ
designedFor	assaulting fortified positions ⓘ engaging enemy armor ⓘ
designedToReplace	KV series heavy tanks ⓘ
developedBy	Soviet Union NERFINISHED ⓘ
developedInPeriod	early 1940s ⓘ
engineConfiguration	V-12 diesel ⓘ
engineType	V-2 diesel engine ⓘ
followedBy	IS-2 ⓘ
historicalEra	World War II armored warfare ⓘ
influenced	IS-2 ⓘ later IS series heavy tanks ⓘ
namedAfter	Joseph Stalin ⓘ
namedSeries	IS-2 heavy tank ⓘ surface form: Iosif Stalin tanks
partOfSeries	IS tank family ⓘ
precededBy	KV-1S NERFINISHED ⓘ
role	heavy tank ⓘ
serviceBranch	Armored forces of the Red Army ⓘ
successorRole	basis for production IS series ⓘ
suspensionType	torsion bar suspension ⓘ
turretMount	85 mm gun turret ⓘ
usedBy	Red Army ⓘ

Full triples — surface form annotated when it differs from this entity's canonical label.

KV-1 heavy tank → successor → IS-1 ⓘ

subject surface form: KV-1