IS-2m

GENERAL DATA
Formal Designation	IS-2 Model 1944 (also IS-2M)¹
Manufacturer(s)	Factory No.100 Kirovskiy Works in Chelyabinsk (ChKZ or Tankograd)
Production Quantity	3475²	Production Period	Apr. 1944-Jun. 1945**
Type	Heavy Tank	Crew	4
Overall Length	9.8 m (32' 2")	Barrel Overhang	3.1 m (10' 2")
Width	3.1 m (10' 2")	Height	2.7 m (8' 10")
Combat Weight	46000 kg (101000 lbs)	Radio Equipment	10R or 10RK

FIREPOWER
Primary Armament	122mm Gun D-25T	Ammunition Carried	28
Traverse (degrees)	360°	Elevation (degrees)	-3° to +20°
Traverse speed (360°)	n.a.	Sight	TSh-17, POP
Secondary Armament	2 x 7.62mm DT MG (coaxial, turret rear)	Ammunition Carried	2330 x 7.62mm
Secondary Armament	1 x 12.7mm DShK MG (AA)	Ammunition Carried	945 x 12.7mm

MOBILITY CHARACTERISTICS
Engine Make & Model	V-2-IS (V-2-10)	Track Links	87-90/track
Type & Displacement	V12, 38.9 liters	Track Width	65 cm (26")
Horsepower (max.)	600hp @2000rpm	Track Ground Contact	436 cm (172")
Power/Weight Ratio	13.0 hp/tonne	Ground Pressure	0.81 kg/cm² (11.5 psi)
Gearbox	4 forward, 1 reverse	Ground Clearance	0.46 m (1' 6")
Fuel	Diesel	Turning Radius	0
Range on road	150(230) km	Gradient	36°
Mileage on road	340 l/100km	Vertical Obstacle	1.0 m (3' 3")
Fuel Capacity	520 (+270 external)³ l	Fording	1.3 m (4' 3")
Speed on/off road	37/19 km/h	Trench Crossing	2.5 m (8' 2")

ARMOR PROTECTION
Armor Detail	Front	Side	Rear	Top/Bottom
Hull	120mm @60°	90mm @90°	60mm @49°	20mm @0°
Superstructure	120mm @30°	90mm @75°	60mm @41°	30mm @0°
Turret	90mm @round	90mm @72°	90mm @60°	30mm @0-5°
Mantlet	100mm @round	-	-	-

TECHNICAL DRAWINGS AND OTHER IMAGES
IS-2m or Model 1944 by S. Zaloga

NOTES
¹Soviet nomenclature is unclear. These Designations are usually found in references to the vehicle specified here. However, there was also a postwar modernization of the IS-2 which the Soviets formally designated the IS-2M. ²This is an estimate of IS-2 Model 1944 production during the noted production period. Production continued after this period. Higher estimates seem to include IS-1 and early IS-2 production. ³It is assumed here that three 90 liter tanks are used for fuel.

NOTES

¹Soviet nomenclature is unclear. These Designations are usually found in references to the vehicle specified here. However, there was also a postwar modernization of the IS-2 which the Soviets formally designated the IS-2M.
²This is an estimate of IS-2 Model 1944 production during the noted production period. Production continued after this period. Higher estimates seem to include IS-1 and early IS-2 production.
³It is assumed here that three 90 liter tanks are used for fuel.

REFERENCES
SHT, IS2, RT, ST, RTAV, OOBTr, PH28r, RAH, Russian Military Zone