IS-1

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IS-1

GENERAL DATA
Other Designation(s)	IS-1 [IS - Iosef Stalin, also IS-85, and JS-1]
Type	Heavy Tank	Radio Equipment	10R or 10RK
Manufacturer(s)	Factory No.100 Kirovskiy Works in Chelyabinsk (ChKZ or Tankograd)
Crew	4
Production Quantity	107	Production Period	Late 1943 - Early 1944

DIMENSIONS
Combat weight	44000 kg	Ground pressure	0.78 kg/cm²
Length /hull	6.7 m	Length w/Gun	8.3 m
Barrel Overhang	1.60 m	Height	2.7 m
Width	3.1 m	Ground clearance	0.46 m

ARMAMENT
Primary Armament	85 mm Gun D-5T85 (1)	Ammunition Carried	59
Traverse	360° (manual & electric)	Elevation	-4° to +23° (manual)
Traverse speed (360°)	?	Sight	10T-15, PT-4-15
Secondary Armament	2 x 7.62 mm DT MG (2)	Ammunition Carried	2520
Location	1: Turret - 2: coaxial, turret rear

ARMOR
Assembly	Welding
Armor Detail (from the horizontal)	Front	Side	Rear	Top/Bottom
Hull	100 mm / 60°	90 mm / 90°	60 mm / 49°	30 mm / 0° (front) 2 0 mm / 0° (rear)
Superstructure	60 mm / 18 ° (glacis) 120 mm / 60° (driver)	90 mm / 75°	60 mm / 41°	30 mm / 0°
Turret	100 mm / round	100 mm / 72°	100 mm / 60°	30 mm / 0-5°
Mantlet	100 mm / round	-	-	-

AUTOMOTIVE
Engine	V-2-IS (V-2K)	Type & Displacement	V12, 38.9 liters
Horsepower (maximum)	600 hp at 2000 rpm	Power/Weight Ratio	13.6 hp / ton
Gearbox	4 forward, 1 reverse	Fuel Capacity	520 (+ 360 external) L Diesel

SUSPENSION
Type	Torsion bars	Road wheels	6 double, steel
Track return rollers	3 double	Sprocket-Wheels	Rear, double
Idler Sprockets	Front, double	Shock absorbers	-
Track Type	Central guides, Cast allow steel, dry pin
Width	650 mm	Pitch	165.10 mm
Links(shoes)	87-90	Track ground contact	4.36 m

PERFORMANCES
Maximum Speed	37 km/hon road, 19 km/h off road	Range	150-260 km on road, 125-210 km off road
Mileage	330 L/100 km on road	Maximum grade	36° (from horizontal)
Trench crossing	2.5 m	Vertical obstacles	1.0 m
Maximum fording depth	1.3 m	Minimum turning diameter	0 m

Sources
OnWar.com	Vehicles.com	TNT Hors-Série n°3	-

Drawings

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