ISU-152

ISU-152 was a Soviet multirole fully enclosed and armored assault gun or armored self-propelled gun, also capable of serving as a heavy tank destroyer developed and used during World War II, with a subsequent use, mainly in the Soviet military, until the 1970s.


ISU-152
Class Vehicle
Type Armoured Fighting Vehicle
Manufacturer Factory No.100 Kirovskiy Works in Chelyabinsk
Production Period 1943 - 1945
Origin Russia (USSR)
Country Name Origin Year
Russia (USSR) 1943
Country Name Operational Year Retirement Year
China View
Czechoslovakia View
Egypt View
Finland View
North Korea View
Poland View
Romania View
Russia (USSR) 1943 1970 View
ManufacturerName Production From Production To Quantity
Factory No.100 Kirovskiy Works in Chelyabinsk 1943 1945 2000 View

The beginnings of the ISU-152 came on January 24, 1943, when the first prototype of the SU-152 was unveiled. It was designated Object 236. Object 236 was completed in Factory No. 100 in Chelyabinsk, and on the same day, January 24, underwent trials on the Chebarkulski artillery range, 107 km from Chelyabinsk. By February 7, 1943 the trials were over, passed with success. On February 14 the vehicle was adopted and put into production under the KV-14 (??-14) designation. In April 1943 was ordered KV-14 to be henceforth designated SU-152 (??-152). In time, the combat performance of SU-152, based on the KV-1S tank, made necessary the modernisation of the vehicle, using the new IS tank as a base. On May 25, 1943, shortly after deployment, the administration of Factory No. 100 ordered the beginning of the modernisation of the SU-152, which included increased armour protection and other improvements. Development began in July 1943, under the supervision of Joseph Yakovlevich Kotin (the chief designer of Soviet heavy tanks) and G. N. Moskvin as the main designer, and in about a month the first modernized variant was ready. It was designated IS-152 (??-152). It underwent factory trials in September 1943, revealing a large number of different deficiencies, which sent it back for further improvement. In October 1943 a second (different) modernized variant was ready, designated Object 241. It was an improvement over the IS-152. The factory trials began the same month, followed by state trials on the Gorohovetskom test range. On November 6, 1943, an order was issued for adoption of this variant, under the ISU-152 (???-152) designation, and in December production began at the Chelyabinsk Kirovsk Plant, replacing the SU-152.

ISU-152 was an armoured vehicle (assault gun, AFV or armoured fighting vehicle) in combat use during the Second World War (World War II or WWII) primarily on the Eastern Front. The ISU-152 was a fully tracked all-terrain vehicle designed for military operations. ISU-152 was produced and deployed by the Red Army of the Soviet Union (USSR). The technical drawing (plan, layout or profile) shows the general appearance characteristics of the specified model (version) of the ISU-152 assault gun for purposes of identification and reference. For more detailed information about this armoured fighting vehicle, refer to ISU-152.

GENERAL DATA
Formal DesignationISU-152 [IS is short for Iosef Stalin]
Manufacturer(s)Factory No.100 Kirovskiy Works in Chelyabinsk (ChKZ or Tankograd)
Production Quantityabout 20001Production Period1943-1945
TypeAssault GunCrew5
Length9.0 m (29' 6")Barrel Overhang2.2 m (7' 3")
Width3.1 m (10' 2")Height2.5 m (8' 2")
Combat Weight (kg)46000Radio Equipmentn.a.
FIREPOWER
Primary Armament152mm Howitzer (ML-20S)Ammunition Carried20
Traverse (degrees)Manual (10° L - 10° R)Elevation (degrees)-3° to +20°
Traverse speed (360°)-SightPT-5, T-5
Secondary Armament12.7mm DShK MG (AA)Ammunition Carried1000


MOBILITY CHARACTERISTICS
Engine Make & ModelV-2-ISTrack Links87-90/track
Type & DisplacementV12, 38.9 litersTrack Width65 cm (26")
Horsepower (max.)600hp@2000rpmTrack Ground Contact436 cm (172")
Power/Weight Ratio13.0 hp/tGround Pressure0.81 kg/cm2 (11.5 psi)
Gearbox4 forward, 1 reverseGround Clearance0.46 m (1' 6")
FuelDieselTurning Radius0
Range on/off road150(230) kmGradient36°
Mileage on/off road350 l/100kmVertical Obstacle1.0 m (3' 3")
Fuel Capacity520 (+270 external)2 lFording1.3 m (4' 3")
Speed on/off road37/16 km/hTrench Crossing2.5 m (8' 2")
ARMOR PROTECTION
Armor DetailFrontSideRearTop/Bottom
Hull90mm@60°(lower)90mm@90°60mm@49°(lower)20mm@0°
60mm@12°(glacis)60mm@41°(upper)
Superstructure90mm@60°75mm@65°60mm@90°30mm@0°
Mantlet65mm@round---

NOTES
1Total ISU-122, ISU-122S and ISU-152 production is claimed to be 4075 by June 1945 by Zaloga. The estimate provided here assumes 50% of the total production was ISU-152.
2It is assumed here that three 90 liter tanks are used for fuel.

End notes