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Soviet Union's IS-3 heavy tank

Photos

Easy Models 1/72 Die Cast Armor 36247:
Easy Models 36247 Soviet JS-3/3M

Design

A group lead by N. Dukhov redesigned IS-2 with a lower silhouette and pointed hull.

Armor

The front armor on the IS-3 was made from two plates that were welded together at an angle.1 This was called a Pike nose by the IS-3's designers.1 It was hoped that this design would help it shed enemy rounds better than the IS-2.1

Turret

N. L. Dukhov developed the rounded shaped turret which deflected rounds fired at it better.1 The internal layout was better for the crew and improved fighting efficiency.1

Prototype

Marshal G. K. Zhukov and Marshal A. M. Vasilevsky were show the prototype of the IS-3 in October 1944.1 They highly recommended that production be started on the IS-3.1

Production

  • IS-3: 2,3111
    • Production: early 1945 - mid 19461

Usage

Most reports say it didn't make it to the front by VE-Day. It did appear publicly at the Berlin Victory Parade in September 1945. Delivered in very small numbers to heavy guard tank regiments in January 1945.

Specifications

  IS-31
Crew 41,3,4
Physical Characteristics  
Weight 100,972 lb
45.8 tons3,4, 51.2 tons1
46,250 kg3, 46,500 kg1
Length w/gun 32.75'4, 35' 3"1
10.74 m1
Length w/o gun 22' 4"3, 6.81 m3
Height 8.9'4, 8' 11"3, 9' 6"1
2.93 m3, 2.92 m1
Width 10.5'4, 11', 11' 3"1 , 10' 6"3
3.07 m, 3.44 m1,3
Ground clearance 0.43 m
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 122 mm D-253
122 mm M1943 D-25 T L/43
122 mm1,4
Secondary  
MG 1 or 2: 7.62 mm DT MG
1 or 2: 7.62 mm MG1
2: 7.62 mm DT MG3
2: MG4
MG - anti aircraft 12.7 mm AA1
12.7 mm DShK AA MG3
Side arms  
Quantity  
Main 28
Secondary  
MG 7.62: 1,000
Side arms  
Armor Thickness (mm) 24 - 1204
2303
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) ( V-2K)
Bore / stroke  
Cylinders  
Net HP 5194
Transmission  
Fuel type Diesel4
Octane  
Capacity  
Performance  
Traverse 360°
Speed - Road 23 mph1,3,4
37 kph1,3
Speed - Cross Country 15 mph
Range - Road 130 miles3, 192.3 miles1
209 km3, 208 km1
Turning Radius  
Elevation Limits  
Fording depth  
Trench crossing  
Vertical Obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Track length  
Tires  
Track width  
Track centers/tread  
  IS-3 1945
Crew 42
Physical Characteristics  
Weight 45.8 tons2
Length w/gun 10 m2
Length w/o gun 6.67 m2
Height 2.44 m2
Width 3.2 m2
Ground clearance  
Ground contact length  
Ground pressure 0.79 kp/cm2 2
Turret ring diameter  
Armament  
Main 122 mm 1944 D-25 T2
Secondary  
MG 7.62 mm DT MG2
MG - anti aircraft 12.7 mm DSchK 38/44 AA MG2
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 90-1202
Hull Front, Lower  
Hull Sides, Upper 902
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front 200-2302
Turret Sides 75-1152
Turret Rear 75-1152
Turret Top 302
Engine (Make / Model) V-2-IS3, W-2-IS2
Bore / stroke 4 stroke2
Cylinders V-122
Net HP 600@2,000 rpm2
Transmission  
Fuel type Diesel2
Octane  
Capacity 780 liters2
Performance  
Traverse  
Speed - Road 40 kph2
Speed - Cross Country  
Range - Road 190 km2
Turning Radius  
Elevation Limits  
Fording depth 1.3 m2
Trench crossing 2.7 m2
Vertical Obstacle 1 m2
Climbing ability 30 - 36°2
Suspension (Type)  
Wheels each side  
Return rollers each side  
Track length  
Tires  
Track width  
Track centers/tread  

Sources:

  1. Russian Tanks of World War II Stalin's Armored Might, by Tim Bean & Will Fowler, 2002
  2. Russian Tanks and Armored Vehicles 1917-1945, by Wolfgang Fleischer, 1999
  3. The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
  4. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
20th Century American Military History Crucial Site