List of all Soviet/Russian Heavy Tanks

Hey everyone, today I decided to make a full list of all the Russian KV and IS heavy tanks!

If I missed any let me know!

Enjoy!


Kliment Voroshilov tanks

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KV Prototypes

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KV prototype, it has two guns in the turret, one 76mm L-11 and one 45mm 20-K. The KV (U-1) was given to the 20th Heavy Tank Brigade in december.

Specifications:
Main armament: 1 x 1 76 mm L-11
Secondary armament: 1 x 1 45 mm 29-K
Auxiliary armament: 1 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 42 tons
Top speed: 34 km/h
Crew: 5

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Another KV prototype, this one armed with just the 76mm gun. Another thing that stands out are the rounded covers on the sides of the tank.

Specifications:
Main armament: 1 x 1 76 mm L-11
Secondary armament: 1 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 42 tons
Top speed: 34 km/h
Crew: 5

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KV-1

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  • KV-1 Model 1939
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First production models, these tanks were prone to frequent breakdowns, but were highly resistant to anti-tank weapons during the Winter War. Armed with the 76 mm L-11 tank gun, recognizable due to a recuperator above a barrel. Most tanks were lacking the hull machine gun.

Specifications:
Main armament: 1 x 1 76 mm L-11
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 46 tons
Top speed: 34 km/h
Crew: 5

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  • KV-1 Model 1940
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Used the F-32 76 mm gun and a new mantlet. The main production model by the time of the German invasion.

Specifications:
Main armament: 1 x 1 76 mm F-32
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 46 tons
Top speed: 34 km/h
Crew: 5

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  • KV-1 Model 1940 s ekranami / KV-1E
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Model 1940 with additional bolted-on appliqué armour and F-32 gun.

Specifications:
Main armament: 1 x 1 76 mm F-32
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 105 mm / 75 mm
Hull armour (Front / Sides / Rear): 100 mm / 100 mm / 70 mm
Weight: 49 tons
Top speed: 34 km/h
Crew: 5

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  • KV-1 Model 1941 (Welded Turret)
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Early version of the Model 1941 with the standard welded turret. This tank was armed with the longer-barreled ZiS-5, tank gun.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5

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  • KV-1 Model 1941 (Cast Turret)
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Up-armoured with 25–35 mm (0.98–1.38 in) added to the turret, hull front and sides. Turret was now cast instead of welded. This tank was armed with the longer-barreled ZiS-5, tank gun.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5

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  • KV-1 Model 1942 (Welded Turret)
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Fully cast turret with thicker armour or welded turret with thicker armour, again up-armoured, using an improved engine and the 76 mm ZiS-5 tank gun.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5


  • KV-1 Model 1942 (Cast Turret)
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Fully cast turret with thicker armour or welded turret with thicker armour, again up-armoured, using an improved engine and the 76 mm ZiS-5 tank gun.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5



One-of prototypes


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KV-1 Serial Number #10033 (Either a Model 1941 or a 1942) fitted with a 650 hp V-2KF engine. The engine overheated constandly and did not give the Tank much greater performance.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5

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KV-1 fitted with a ZIS-22 gun. This was a F-34 gun that was reworked to fit in a KV-1 turret.

Specifications:
Main armament: 1 x 1 76 mm ZIS-22
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 100 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5

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KV-1S

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  • KV-1S
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A variant with higher speed, but thinner armour. A new, smaller, cast turret and redesigned rear hull with a new planetary transmission.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 82 mm / 82 mm / 82 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 60 mm
Weight: 42,5 tons
Top speed: 45 km/h
Crew: 5

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  • KV-1S Hybrid
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KV-1S turret on a KV-1 hull.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 82 mm / 82 mm / 82 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 46,4 tons
Top speed: 34 km/h
Crew: 5


  • KV-1S (S-28)
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KV-1S fitted with a 85mm S-28 gun. Prototype only.

Specifications:
Main armament: 1 x 1 85 mm S-28
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 82 mm / 82 mm / 82 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 60 mm
Weight: 42,5 tons
Top speed: 45 km/h
Crew: 5

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KV-2

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  • KV-2 Model 1939
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A heavy assault tank with the M-10 152 mm howitzer, the KV-2 was produced at the same time as the KV-1. Due to the size of its heavy turret and gun, the KV-2 was slower and had a much higher profile than the KV-1.

Specifications:
Main armament: 1 x 1 152 mm M-10T
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 52,4 tons
Top speed: 34 km/h
Crew: 6

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  • KV-2 Model 1940
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The KV-2 with the production model turret.

Specifications:
Main armament: 1 x 1 152 mm M-10T
Secondary armament: 1 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 52,4 tons
Top speed: 34 km/h
Crew: 6

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  • KV-2 (ZIS-6)
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A Model 1940 with a 107mm ZIS-6 cannon.

Specifications:
Main armament: 1 x 1 107 mm ZIS-6
Secondary armament: 2 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 75 mm / 75 mm / 75 mm
Hull armour (Front / Sides / Rear): 75 mm / 75 mm / 70 mm
Weight: 52,4 tons
Top speed: 34 km/h
Crew: 6


KV-3 (Объект 150, 221, 222, 223)

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  • KV-3 (Объект 150), a.k.a. T-150
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The T-150, or sometimes named KV-3, was an attempt to improve the armor of the KV-1 even before the KV-1 entered mass production. With 90 mm of armor all around and a 700 hp engine, it could have been a better option had it not been for some critical events during its development phase. It was, however, groundbreaking in what would become a series of KV heavy tanks, and the single prototype saw combat service until the end of 1943.


  • KV-3 (Объект 221)
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KV-1 with a 85mm F-30 gun. The gun didn’t fit into the KV’s turret so it was never built.

Specifications:
Main armament: 1 x 1 85 mm F-30

No image available.


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KV-1 with a F-32 76.2 mm gun. Mockup only.

Specifications:
Main armament: 1 x 1 76.2 mm F-32
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Hull armour (Front / Sides / Rear): 90 mm / 90 mm / 90 mm
Weight: 52 tons
Top speed: 34 km/h
Crew: 5


  • KV-3 (Объект 223)
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Object 223’s hull was built and was tested with weights to simulate the new conical turret (housing a 107 mm ZiS-6 cannon) that was designed for it. Object 223 had up to 120 mm of sloped armour. Series production was intended to start in late 1941, but the German invasion of the USSR halted these plans and the only prototype hull was destroyed.

Specifications:
Main armament: 1 x 1 107 mm ZIS-6
Secondary armament: 2 x 1 7.62 mm DT
Turret armour : Up to 120 mm
Hull armour : Up to 120 mm


KV-4 (Объект 224)

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A project for a super-heavy tank. About 20 different designs were proposed, but it was cancelled due to the outbreak of the war. Different versions would have been between about 85 and 110 tonnes. Armour from about 120 to 190 mm. Armament consisted of the 107 mm ZiS-6 cannon. Different variants had various auxiliary weapons: 45 mm 20-K, 76 mm L-11 cannons, machineguns and flamethrowers in addition to the main gun.


  • Buganov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 1 x 1 7.62 mm DT
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 93 tons
Top speed: 50 km/h
Crew: 6

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  • Bykov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 2 x 1 7.62 mm DS-39
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 98,6 tons
Top speed: 36 km/h
Crew: 8

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  • Dukhov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 2 x 1 7.62 mm DT
Turret armour : Up to 135 mm
Hull armour : Up to 135 mm
Weight: 82,5 tons
Top speed: 40 km/h
Crew: 6

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  • Ermolaev
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Two designs were made by Ermolaev, one with a single turret and another with two turrets.

Specifications Single Turret Version:
Main armament: 1 x 1 107 mm ZiS-6
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 90 tons
Top speed: 35 km/h
Crew: 6

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Single turret version

Specifications Double Turret Version:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 95 tons
Top speed: 35 km/h
Crew: 6

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Double turret version


  • Fedorenko
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm M.1938
Auxiliary armament: 3 x 1 7.62 mm DT & 1 x 1 Flamethrower
Turret armour : Up to 125 mm
Hull armour : Up to 140 mm
Weight: 98,6 tons
Top speed: 35 km/h
Crew: 6


  • Kreslavsky
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm M.1937 20-K
Auxiliary armament: 3 x 1 7.62 mm DT
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 92,6 tons
Top speed: 45 km/h
Crew: 6


  • Kruchenykh
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 4 x 1 7.62 mm DT
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 107,7 tons
Top speed: 30 km/h
Crew: 9

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  • Kuzmin, Tarotko, Tarapatin
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 2 x 1 7.62 mm DS-39
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 88 tons
Top speed: 36 km/h
Crew: 6

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  • Marishkin
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 86,4 tons
Top speed: 40 km/h
Crew: 7


  • Mikhailov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6 (F-42)
Secondary armament: 1 x 1 45 mm M.1937 20-K
Auxiliary armament: 3 x 1 7.62 mm DT
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 86,5 tons
Top speed: 50 km/h
Crew: 6

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  • Moskvin
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Turret armour : Up to 130 mm
Hull armour : Up to 130 mm
Weight: 101 tons
Top speed: 40 km/h
Crew: 6

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  • Pavlov & Grigorev
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 91 tons
Top speed: 45 km/h
Crew: 6

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  • Pereverzev
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 2 x 1 7.62 mm DT
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 100 tons
Top speed: 39 km/h
Crew: 6

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  • Schaschmurin
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6 (F-42)
Secondary armament: 1 x 1 76 mm L-11
Auxiliary armament: 2 x 1 7.62 mm DT & 1 x 1 Flamethrower
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 92 tons
Top speed: 35 km/h
Crew: 7


  • Strukov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6 (F-42)
Secondary armament: 1 x 1 45 mm 20-K
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 92 tons
Top speed: 50 km/h
Crew: 6

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  • Sychev
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6 (F-42)
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 2 x 1 7.62 mm DT
Turret armour : Up to 135 mm
Hull armour : Up to 105 mm
Weight: 100 tons
Top speed: 40 km/h
Crew: 6

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  • Tseits
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 2 x 1 7.62 mm DS-39
Auxiliary armament: 1 x 1 Flamethrower
Turret armour : Up to 130 mm
Hull armour : Up to 125 mm
Weight: 90 tons
Top speed: 45 km/h
Crew: 7

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  • Turchaninov
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 1 x 1 7.62 mm DT
Turret armour : Up to 125 mm
Hull armour : Up to 125 mm
Weight: 89,5 tons
Top speed: 35 km/h
Crew: 7

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  • Unknown (1)
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K

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  • Unknown (2)
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Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 1 x 1 45 mm 20-K

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KV-5 (Объект 225)

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A cancelled project for a super-heavy tank. Armament was to be a 107 mm ZiS-6 gun in a large turret and machine-gun in a small secondary turret. Weight was projected as about 100 tons, and the tank was to have 150–180 mm of armour. Project development began in June 1941, however was cancelled due to the Siege of Leningrad, in which all developmental operations at the Kirov Plant were halted. The project fell out of favour from the more advanced heavy tank designs, and no prototype was built.

Specifications:
Main armament: 1 x 1 107 mm ZiS-6
Secondary armament: 3 x 1 7.62 mm DS-39
Turret armour : Up to 180 mm
Hull armour : Up to 180 mm
Weight: 100 tons
Top speed: 40 km/h
Crew: 6


KV-6 (Объект 226)

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A modified KV-1 with 90mm of armour and a 76mm model 1940 gun. Overall it looks like an attempt to modernize the KV-1.
It is also believed to have a flamethrower in the hull, but this cannot be confirmed anywhere.

Specifications:
Main armament: 1 x 1 76 mm F-32
Secondary armament: 1 x 1 Flamethrower
Turret armour : Up to 90 mm
Hull armour : Up to 90 mm

No image available.


KV-7 (Объект 227)

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  • KV-7 U-13
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Experimental self-propelled gun. armed with 3 cannons: two 45 mm model 1932/34 and one 76 mm F-34. 200 rounds of ammunition was carried for the 45 mm guns and 93 rounds for the 76 mm gun, and the tank had 100 mm of frontal armour. One unit was produced and tested in 1941.

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  • KV-7 U-14
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Improved variant had two 76 mm F-34 cannons, and 85 mm of frontal armour. Vehicles were not taken in service primarily because they could not fight tanks (the KV-7s had only 15 degree gun traverse to each side) and could not combat concrete bunkers due to the small caliber of the guns. After the failure of the KV-7 it was decided to put one 152 mm gun in the casemate instead of three smaller guns; this led to the development of the SU-152.

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  • KV-7 U-18
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Experimental self-propelled gun. KV-7 armed with 152 mm ML-20 cannon. Vehicle was projected in 1941. Wooden mockup was constructed. Project was cancelled, but this vehicle was a first step towards SU-152 design.

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  • KV-7 U-19
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KV-7 with a B-4 howitzer. Blueprint design only.

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KV-8 (Объект 228, 238)

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  • KV-8 (Объект 228)
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A KV-1 fitted with the ATO-41 flamethrower in the turret, beside a machine gun. In order to accommodate the new weapon, the 76.2 mm gun was replaced with a smaller 45 mm Gun M1932, though it was disguised to look like the standard 76 mm (the cannon was placed inside a 76 mm tube).


  • KV-8S (Объект 238)
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The same as KV-8, but based on KV-1S. Equipped with ATO-42 flamethrower (improved version of ATO-41).

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  • KV-8S Hybrid
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KV-8S hull with a KV-8 turret.

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KV-9 (Объект 229)

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A KV-1 with short 122 mm U-11 cannon. One prototype was constructed and proved in 1941.

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KV-10 (Объект 230), a.k.a. KV-1K

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A KV-1 with 4 rocket launchers on the sides of hull. Each launcher contained two 132 mm M-13 rockets.

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KV-11 (Объект 231)

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KV-1 armed with a 85 mm S-18 or S-31 gun. Most likely not built.

No image available.


KV-12 (Объект 232)

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Experimental chemical tank. Was equipped with 4 external toxin tanks on the back of chassis. Tanks surrounded with 30 mm armour. Not taken in service.

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KV-13 (Объект 233, 233IS, 234, 234IS)

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  • KV-13 (Объект 233)
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Prototype of a medium tank. Designation for an advanced redesign of the KV series. The tank had a 76.2mm gun.


  • IS-1 Prototype (Объект 233IS)
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Experimental version of what would become the IS-1. The tank had a 5-roller suspension and 76.2mm ZiS-5 gun.

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  • KV-13 (Объект 234)
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Experimental medium tank Prototype armed with 122mm U-11 tank howitzer.

No image available.


  • IS-2 Prototype (Объект 234IS)
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Experimental version of what would become the IS-2. It was given the turret of the KV-9.

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KV-14 (Объект 236)

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Prototype designation for a 152 mm self-propelled gun, accepted for service as the SU-152.

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KV-85 (Объект 238, 239)

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  • KV-85G (Объект 238)
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KV-1S with 85 mm S-31 cannon. Turret and mantlet remained from conventional KV-1S.

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  • KV-85 (Объект 239)
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A KV-1S with the 85 mm D-5T cannon in a new turret, with the ball mounted hull machine gun removed and the hole welded shut, 148 of these tanks were produced in the second half of 1943 until the spring of 1944; they were a stopgap until the IS tank series entered production.

Specifications:
Main armament: 1 x 1 85 mm D-5T
Secondary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 75 mm
Weight: 46 tons
Top speed: 45 km/h
Crew: 4

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KV-100

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A KV-85 with the 100 mm S-34 cannon. One prototype was made in 1944. Not taken in service.


KV-122

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  • KV-122 (S-41)
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A KV-1S with short 122 mm S-41 howitzer. One prototype was made in 1943. Not taken in service.

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  • KV-122 (D-25T)
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A KV-85 with the 122 mm D-25T cannon. One prototype was made in 1944. Not taken in service.

Specifications:
Main armament: 1 x 1 122 mm D-25T
Secondary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 75 mm
Weight: 48 tons
Top speed: 34 km/h
Crew: 4

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KV-152

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Proposal to fit a 152 mm gun into the turret of a KV-85. Nothing became of the project.

No image available.


KV-220 (Объект 220, 220 No2)

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  • KV-220 (Объект 220)
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Experimental. Longer chassis (7 rollers per side). Armour - 100 mm. New 850 hp V-2SN engine with turbocharging. New diamond-shaped turret. 85 mm F-30 cannon. One prototype was constructed in 1941. The tank was lost in battle after a direct hit to the frontal hull by a 150 mm howitzer sFH 18 in December 1941.

Specifications:
Main armament: 1 x 1 85 mm F-30
Secondary armament: 3 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Weight: 62,4 tons
Top speed: 34 km/h
Crew: 6

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  • KV-220-2 (Объект 220 Nº2)
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The KV-220 chassis but with a 76mm KV-1 turret fitted.

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Iosif Stalin tanks

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IS-1 (Объект 237, 237 No1, 237 No2), a.k.a IS-85

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  • IS-85 (Объект 237)
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Prototype for the IS-1 armed with the 85mm Main Gun. Sources are confusing on the model of gun, either the S-18 or S-31 gun.

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  • IS-1 (Объект 237 Nº1)
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IS-1 heavy tank with 6-roller suspension and 85mm S-1 / D-5T gun.

Specifications:
Main armament: 1 x 1 85 mm D-5T
Secondary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 90 mm / 60 mm
Weight: 44 tons
Top speed: 37 km/h
Crew: 4

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  • IS-1 (Объект 237 Nº2)
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Объект name for the IS-85, around 1943.

No image available.


IS-2 (Объект 240, 240M), a.k.a IS-122

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IS-2 Prototype with a T-shaped muzzle brake.

Specifications:
Main armament: 1 x 1 122 mm D-25
Secondary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 90 mm / 60 mm
Weight: 46 tons
Top speed: 37 km/h
Crew: 4

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  • IS-2 Model 1943 (Объект 240)
Spoiler

1943 model, armed with a 122mm D-25T gun.

Specifications:
Main armament: 1 x 1 122 mm D-25T
Secondary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 90 mm / 60 mm
Weight: 46 tons
Top speed: 37 km/h
Crew: 4

image


  • IS-2 Model 1944 (Объект 240)
Spoiler

1944 improvement with improved simpler hull front. Armored hulls were produced by No.200 plant (cast) and UZTM (welded) simultaneously.

Specifications:
Main armament: 1 x 1 122 mm D-25T
Secondary armament: 1 x 1 12.7 mm DShK
Auxiliary armament: 2 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 100 mm / 100 mm / 100 mm
Hull armour (Front / Sides / Rear): 100 mm / 90 mm / 60 mm
Weight: 46 tons
Top speed: 37 km/h
Crew: 4

image


  • IS-2M (Объект 240M)
Spoiler

1957 technological modernization of pre-existing IS-2 tanks. New hull sides with integrated stowage boxes, T-10M tracks and roadwheels, machine gun in turret rear replaced by ventilation fan and many other minor technical improvements.

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  • IS-2M (D10-T)
Spoiler

IS-2M fitted with a 100mm D10-T gun.

image


  • IS-2U
Spoiler

A re-design of the IS-2 which would give it many improvements such as armour, engine compartment, new transmission, redesigned turret, etc. A prototype was made but no photos exists of it, only a handfull of blueprints.

image


IS-3 (Объект 237, 244, 703, 703M)

Spoiler
  • IS-3 (Объект 237)
Spoiler

Not the IS-3 you are thinking of, I know. But the name IS-3 was used before the Объект 703 IS-3 came around. This early IS-3 is pretty much an IS-1 derivative.

IS-3 with 85mm S-18 gun.

image


  • IS-3 (Объект 244)
Spoiler

Not the IS-3 you are thinking of, I know. But the name IS-3 was used before the Объект 703 IS-3 came around. This early IS-3 is pretty much an IS-1 derivative.

IS-3 experimental heavy tank version of Объект 237 with a 85mm D-5S-85BM, D-5T-85BM or S-53IS-85 gun.

image


  • IS-3 (Объект 244) (IS-6 suspension)
Spoiler

Not the IS-3 you are thinking of, I know. But the name IS-3 was used before the Объект 703 IS-3 came around. This early IS-3 is pretty much an IS-1 derivative.

IS-3 fitted with the same suspension as the IS-6 for trials.

image


  • IS-3 (Объект 244) (D-30 gun)
Spoiler

Not the IS-3 you are thinking of, I know. But the name IS-3 was used before the Объект 703 IS-3 came around. This early IS-3 is pretty much an IS-1 derivative.

The IS-3 fitted with the IS-6 suspension and given a 122mm D-30 gun.

image


  • IS-3 (Объект 703)
Spoiler

1944 Heavy Tank. Fitted with a new rounded turret, angular front hull casting, integrated stowage bins over the tracks. Internally similar to IS-2 model 1944 and produced concurrently. About 350 built during the war.

Specifications:
Main armament: 1 x 1 122 mm D-25T
Secondary armament: 1 x 1 12.7 mm DShK
Auxiliary armament: 1 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 250 mm / 150 mm / 90 mm
Hull armour (Front / Sides / Rear): 110 mm / 90 mm / 60 mm
Weight: 48 tons
Top speed: 40 km/h
Crew: 4


  • IS-3M (Объект 703M)
Spoiler

1952 modernized version of IS-3. Fitted with additional jettisonable external fuel tanks, improved hull welding and a new anti-air machine gun.

image


IS-4 (Объект 245, 701)

Spoiler
  • IS-4 (Объект 245)
Spoiler

Not the IS-4 you are thinking of, I know. But the name IS-4 was used before the Объект 701 IS-4 came around. This early IS-4 is pretty much an IS-2 derivative.

IS-4 experimental heavy tank, Объект 240 fitted with 100mm D-10T gun.

image


Spoiler

First IS-4 prototype heavy tank with 122mm S-34-II Gun.


Spoiler

Second IS-4 prototype heavy tank with 122mm S-34-II Gun.


Spoiler

Third IS-4 prototype heavy tank with 100 mm S-34-I Gun.


Spoiler

Fourth IS-4 prototype heavy tank. This one was just a hull and turret without any internals. It was used for firing trails. Compared to the other IS-4 Prototypes this one was given a different armour layout for futher testing.


Spoiler

Fifth IS-4 prototype heavy tank. Armed with the 122mm again.


Spoiler

Sixth IS-4 prototype heavy tank. With Reinforced Armour from the lessons learned of the previous prototypes. I believe it’s still armed with the 122mm gun.


Spoiler

Final IS-4 prototype. This is what became the IS-4 that went into production.


  • IS-4 (Объект 701)
Spoiler

IS-4 heavy Tank.

Specifications:
Main armament: 1 x 1 122 mm D-25T
Secondary armament: 2 x 1 12.7 mm DShK
Turret armour (Front / Sides / Rear): 250 mm / 175 mm / 100 mm
Hull armour (Front / Sides / Rear): 140 mm / 160 mm / 100 mm
Weight: 60 tons
Top speed: 43 km/h
Crew: 4

image


  • IS-4M (Объект 701M)
Spoiler

Slightly modernized IS-4 heavy Tank with side skirts added.


IS-5 (Объект 248, 252, 730)

Spoiler
  • IS-5 (Объект 248)
Spoiler

While not looking like what you would expect of the IS-5, but the name IS-5 was first used around the time the IS-2 was being used. This early IS-5 is pretty much an IS-2 derivative.

IS-5 experimental heavy tank, Объект 240 fitted with 100mm S-34 gun.

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  • IS-5 (Объект 252)
Spoiler

IS-5 experimental heavy tank development of the Объект 240.

No image available.


  • IS-5 (Объект 730)
Spoiler

Further development of the IS-3 (Объект 703).

image


IS-6 (Объект 252, 253)

Spoiler
  • IS-6 (Объект 252)
Spoiler

IS-6 experimental heavy tank development of the Объект 240 with mechanical transmission.

Specifications:
Main armament: 1 x 1 122 mm D-30T
Secondary armament: 1 x 1 12.7 mm DShK
Auxiliary armament: 1 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 150 mm / 150 mm / 100 mm
Hull armour (Front / Sides / Rear): 100 mm / 120 mm / 60 mm
Weight: 51,1 tons
Top speed: 44 km/h
Crew: 4


  • IS-6 (Объект 253)
Spoiler

Объект 252 fitted with electrical transmission and a more basic suspension as seen on the IS-2.

Specifications:
Main armament: 1 x 1 122 mm D-30T
Secondary armament: 1 x 1 12.7 mm DShK
Auxiliary armament: 1 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 150 mm / 150 mm / 100 mm
Hull armour (Front / Sides / Rear): 100 mm / 120 mm / 60 mm
Weight: 51,1 tons
Top speed: 44 km/h
Crew: 4


  • IS-6U (Объект 252U)
Spoiler

Improved IS-6 design. Only existed on blueprint but it formed the basis of futher heavy tank designs.

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IS-7 (Объект 257, 258, 259, 260)

Spoiler
  • IS-7 (Объект 257)
Spoiler

Design of heavy 60-70 -t assault tank. This was the beginning of what would become the IS-7.\

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  • IS-7 (Объект 258)
Spoiler

Design of heavy 60-70 -t assault tank. This was a further design of what would become the IS-7.

No image available.


  • IS-7 (Объект 259)
Spoiler

Design of heavy 60-70 -t assault tank. This was a further design of what would become the IS-7.

No image available.


  • IS-7 Model 1946 (Объект 260)
Spoiler

One of the first IS-7 Prototypes.

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  • IS-7 Model 1947 (Объект 260)
Spoiler

IS-7 experimental heavy assault tank.

Specifications:
Main armament: 1 x 1 130 mm C-70
Secondary armament: 2 x 1 14.5 mm KPVT
Auxiliary armament: 6 x 1 7.52 mm RP-46
Turret armour (Front / Sides / Rear): 250 mm / 200 mm / 90 mm
Hull armour (Front / Sides / Rear): 150 mm / 100 mm / 60 mm
Weight: 68 tons
Top speed: 60 km/h
Crew: 5


IS-8 (Объект 730)

Spoiler

The original T-10 tank, at this time of it’s development known as the IS-8.

image


Объект heavy tanks

Spoiler

Объект 0-50

Spoiler

Объект 0-50 is an experimental Soviet single-turreted heavy breakthrough tank of the late 1930s.

The tank was developed as a breakthrough tank in the Design Bureau of Plant No. 185. It was essentially a single-turret variant of the T-100 heavy breakthrough tank.

No image available.


Объект 103

Spoiler

The Объект 103 is an experimental unrealized project of the Soviet coastal defense heavy tank, designed on the basis of the T-100 heavy tank.

Unlike the more well known SU-100Y which would end up getting build using the T-100 heavy tank chassis, this Объект 103 has the huge coastal defense gun in a fully rotating turret.

image

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Объект 265

Spoiler

Futher development of the original IS-5. This one was armed with the more powerfull 122mm M-62T gun, and it also had a 14.5mm instead of a 12.7mm machine gun.

image


Объект 266

Spoiler

Variant of the early IS-8 with a hydromechanical transmission.


Объект 267

Spoiler

Experimental T-10A prototype with stabilized main armament.

No image available.


Объект 269

Spoiler

Объект 730 (T-10) fitted with TND-2S stereoscopic rangefinder.

No image available.


Объект 277

Spoiler

The Объект 277 was a prototype Soviet heavy tank designed in 1957, one of the last heavy tanks to be produced by the USSR. It was a conventional heavy tank, armed with a powerful 130mm gun and thickly armoured. All development was cancelled in 1960, as part of Nikita Khrushchev’s wish to abandon what he deemed obsolete heavy tanks, and re-focus efforts on ATGMs.


Объект 278

Spoiler

The Object 278 was in all other ways identical to the Object 277, but housed the experimental GTD-1 gas turbine engine, as well as a planetary gearbox. The vehicle never left the blueprint stage, and development was cancelled on July 19, 1960, along with the Object 277.

image


Объект 279

Spoiler

The Объект 279 was a Soviet experimental heavy tank developed at the end of 1959.

This special purpose tank was intended to fight on cross country terrain, inaccessible to conventional tanks, acting as a heavy breakthrough tank. It was planned as a tank of the Supreme Command Reserve.

Specifications:
Main armament: 1 x 1 130 mm M-65
Secondary armament: 1 x 1 14.5 mm KPVT
Turret armour (Front / Sides / Rear): 300 mm / 300 mm / 120 mm
Hull armour (Front / Sides / Rear): 300 mm / 200 mm / 60 mm
Weight: 60,4 tons
Top speed: 55 km/h
Crew: 4


Объект 279 (Strela AK)

Spoiler

A blueprint design of a Объект 279 with a high velocity 85mm Strela AK gun.


Объект 705

Spoiler

One of a few heavy tank designs that were worked on in after the second world war. Not much remains of this project and it never left the blueprint stage.

image


Объект 718

Spoiler

Another heavy tank design that came after the Объект 705. It would have looked similar to the 705, just overall bigger.

No image available.


Объект 726

Spoiler

Another four tracked heavy tank design like the Объект 279. A test undercarriage was made for this project and trailed during cross-country tests. But aside from that the project never made out the blueprint stage.

image

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Объект 752

Spoiler

A heavy tank project that was armed with a 122mm M-62-2T gun.

image


Объект 770

Spoiler

The Объект 770, was a prototype Soviet heavy tank designed in 1956, and was one of the last heavy tanks ever produced. It was developed alongside the Object 277 and the Object 279 following the Decree of the Council of Ministers of the USSR on August 12, 1955. Development was cancelled in 1960 following Nikita Khrushchev’s orders to stop production of all heavy tanks weighing over 37 tons, in favour of ATGM’s.


Other heavy tanks

Spoiler

EKV

Spoiler

An experimental tank used to test an electromechanical transmission for Soviet heavy tanks. The transmission was put in a KV-1S.

Specifications:
Main armament: 1 x 1 76 mm ZIS-5
Secondary armament: 3 x 1 7.62 mm DT
Turret armour (Front / Sides / Rear): 82 mm / 82 mm / 82 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 60 mm
Weight: 42,5 tons
Top speed: 45 km/h
Crew: 5


Kirovets-1 (Объект A)

Spoiler

Precursor/Prototype of the IS-3. In simple terms it’s a IS-3 without the pike-nose.


SMK

Spoiler

The SMK was an heavy tank prototype developed by the Soviet Union prior to the Second World War. It was named after Sergei Mironovich Kirov, a Communist Party official assassinated in 1934. The SMK was discovered and classified by German intelligence as the T-35C, leading to the misunderstanding that the T-35 took part in the Winter War.

Only one was built and after a trial showing the downsides of its weight and size against the KV tank and brief use in the war with Finland, the project was dropped.

Specifications:
Main armament: 1 x 1 76 mm L-11
Secondary armament: 1 x 1 45 mm 20-K
Auxiliary armament: 1 x 1 12,7 mm DK & 1 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 60 mm / 60 mm / 60 mm
Hull armour (Front / Sides / Rear): 75 mm / 60 mm / 55 mm
Weight: 55 tons
Top speed: 34 km/h
Crew: 7


T-10 (Объект 272 or 730)

Spoiler

To explain the two different Объект numbers: Prior to 1962, T-10Ms were in simultaneous production by two factories (Kirov as Object 272 and Chelyabinsk as Object 734) whose parts were incompatible with those of the other. Kirov’s version was standardized in 1962.


Spoiler

Original production model that entered service in 1955. It was armed with the 122mm D-25TA main gun used on the IS-2. Secondary armaments were a coaxial 12.7mm DShK M and another pivoting DShK M above the loader’s hatch.


Spoiler

A slightly improved T-10 that arrived in 1956 with a vertical plane stabilized main gun that also had a bore evacuator. New telescopic sights were installed for the commander and gunner as well as night vision optics for the driver. The numbers built weren’t significant.

Specifications:
Main armament: 1 x 1 122 mm D-25TS
Secondary armament: 2 x 1 12.7 mm DShK
Turret armour (Front / Sides / Rear): 250 mm / 150 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 80 mm / 60 mm
Weight: 50 tons
Top speed: 42 km/h
Crew: 4


Spoiler

A further improvement of the T-10A built from 1957 onward featuring a new gunner’s sight and a distinctive Red Army infrared search light beside the main gun.

image


  • T-10K (Объект 287)
Spoiler

T-10 heavy tank fitted with a Falanga ATGM launcher.


  • T-10M Prototype (Объект 743)
Spoiler

T-10M Preproduction prototype.

No image available.


Spoiler

Modernized version with longer M-62-T2 L/46 gun with five-baffle muzzle brake, 2-plane gun stabilizer, machine guns replaced with 14.5 mm KPVT, infrared night vision equipment and NBC protection.

Specifications:
Main armament: 1 x 1 122 mm M-62-T2S
Secondary armament: 2 x 1 14.5 mm KPVT
Turret armour (Front / Sides / Rear): 250 mm / 150 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 80 mm / 60 mm
Weight: 50 tons
Top speed: 50 km/h
Crew: 4

image


  • T-10M Malyutka (Объект 734MI)
Spoiler

T-10M fitted with an Malyutka ATGM launcher to the turret.


Spoiler

T-10M turned into a command tank. The tank differed from the T-10M by the presence of an additional P-112 shortwave radio station with a ten-meter telescopic antenna, a 1 kW gasoline-electric unit and TNA-2 navigation equipment.

Specifications:
Main armament: 1 x 1 122 mm M-62-T2S
Secondary armament: 2 x 1 14.5 mm KPVT
Turret armour (Front / Sides / Rear): 250 mm / 150 mm / 100 mm
Hull armour (Front / Sides / Rear): 120 mm / 80 mm / 60 mm
Weight: 50 tons
Top speed: 50 km/h
Crew: 4

image


T-35

Spoiler
  • T-35-1
Spoiler

This is the first T-35 to be produced. It had a round shaped main turret with a 76.2mm PS-3 gun and four smaller turrets. Two of wich had a 37mm PS-2 guns, and the other two DT-29 machineguns.

Something the T-35-1 and 2 have that makes them stand out from the T-35A, is the angled front hull armour and driver hatches.

image


  • T-35-2
Spoiler

This one mounted the more familiar main turret that you see can see on other Russian tanks to. And it received a different engine.

Other then that the weapons remained the same.

image


  • T-35A Model 1935
Spoiler

This is the T-35 we all know and love (or hate). It’s the same tank we have ingame right now.

I feel like there is not much to talk about, just test drive it yourself and see how it performs!

Specifications:
Main armament: 1 x 1 76 mm KT-28
Secondary armament: 2 x 1 45 mm 20-K
Auxiliary armament: 5 x 1 7.52 mm DT
Turret armour (Front / Sides / Rear): 20 mm / 20 mm / 20 mm
Hull armour (Front / Sides / Rear): 30 mm / 23 mm / 20 mm
Weight: 55 tons
Top speed: 34 km/h
Crew: 10


  • T-35A Model 1938 (234-42)
Spoiler

This name is not a variant of the T-35. It’s the serial number of a T-35.
This one was part of a plan to upgrade/modernise the T-35. It’s front hull armour was increased from 20mm to 30mm.
And the biggest difference is the complete redesign of the turrets. They all recieved 30mm of armour that was on a slight angle, thus making the turrets stronger.


  • T-35A Model 1938 (234-64)
Spoiler

This was part of the last T-35’s to be produced. The only changes it recieved where redesigned skirts, new escape hatches and the removal of the machinegun mounted on the back of the main turret.


  • T-35B
Spoiler

This was an attempt to upgrade the engine of the T-35 to either a BD-1 (400 hp) and a BD-2 (700 hp).
The BD-2A was chosen for tests, but the engine was never mouted on a T-35 and nothing became of the project.

No image available.


T-100 (Объект 100)

Spoiler

The T-100 was a Soviet twin-turreted heavy tank prototype, designed in 1938–39 as a possible replacement for the T-35 heavy tank. The T-100 was designed by N. Barykov’s OKMO design team at S.M. Kirov Factory No. 185 in Leningrad. The T-100 was originally conceived with three turrets and was eventually built with two. It was in competition with a similar design, the SMK, but neither were adopted and instead a single turret version of the SMK was ordered as the KV-1. All three prototypes were tested at the same time in the Battle of Summa during the Winter War with Finland.

image


Tank Mk-II “Matilda”, a.k.a. Matilda II

Spoiler

One of the many Lend Lease tanks Russia recieved from the allies.

image


Tank Mk-II “Matilda” (F-96)

Spoiler

A single Russian Matilda II prototype where they fitted a 76 mm ZIS-5 into a Matilda II turret. The gun was renamed to F-96 specifically for this project. Only one was ever built.


Tank Mk-III “Churchill”, a.k.a. Chuchill III

Spoiler

One of the many Lend Lease tanks Russia recieved from the allies.

image


Tank Mk-IV “Churchill”, a.k.a. Chuchill IV

Spoiler

One of the many Lend Lease tanks Russia recieved from the allies.


Sources:

List Объект numbers: Ob'yekt List
KV-4 designs: Catainium's Tanks: KV-4/Object 224 Heavy Tank
All about the KV-6: Tank Archives: Missing Index: KV-6
KV-7’s: http://www.tankarchives.ca/2016/04/kv-7-lock-stock-and-three-smoking.ht

8 Likes

Object 770 and Object 277 are what I’m looking forward to seeing.

2 Likes

I love the Russian 130mm armed heavy tanks, so the Object 277 and 770 are definetly tanks I would love to see ingame too.

2 Likes

Yeah, I was super excited to see the IS-7 and Object 279. The 278 is also an interesting machine, a heavy tank with a gas turbine.

The 278 is indeed very interesting. I can imagine that it would have a decent performance with that engine. And I also like how compact the engine is when you look at the blueprint

image

Sadly it didn’t make it past the blueprint stage. It would have been really cool ingame.

2 Likes

Why did you add Matilda in heavy tanks list?

I know the British Infantry tank classification is not the same as the American Heavy Tank classification. But I was first looking at the Russian ZIS-5 gun version, and with it’s 78mm of armour it makes it fit into the Heavy Tank category in my opinion. And since I was adding the 76mm version at first, I thought why not do the normal 40mm one too.

1 Like

In the old forum, both OBJ 277 and OBJ 770 had been passed to developers for consideration.
Maybe one day we will have them here.

I’m not familiar with most KV-1/2 prototypes (U-0 - U-19) due to a lack of sources. Important to note is obviously that these prototypes were continually changed and their turrets got switched around a lot. But for example the KV U-7 had a cast turret and L-11 gun at some point. KV U-11 and U-15 had a cast turret with F-32 gun. The other prototypes may have had interesting features too.

Two KV-1’s served as prototypes for the V-2KF engine with 650hp.

There’s the ZiS-22 armed KV-1, with prototype ZiS-5 gun using F-22 barrel rather than F-34 barrel (long story). And another KV-1 (mod 1941?) was tested with an actual F-34 gun.

There was the electric transmission KV tested in 1943-1944, dubbed EKV. Mostly as a testbed IIRC.

KV-150 and KV-220 were both called KV-3 at some points (KV-220 was even called KV-4) and I think better fits under the KV-3 umbrella.

The IS-1 prototype that was referred to as the IS-3 was not the third prototype. I’ve only seen it been used to describe the first prototype, but this is merely a coincidence. The name referred to all vehicles of this type. This was because the object 233 at the time was known as the IS-1 and object 234 as IS-2. Hence why the object 237 was IS-3. Hell the IS-2 was also at one point in development called the IS-3.

There’s the IS-2 prototype with T-shaped muzzle brake, and the early production IS-2’s with Ferdinand type muzzle brakes. All these were armed with the early version of the D-25T that still featured the screw breech design.

You have forgotten the original object 703 prototype, most commonly known as the Kirovets-1. The IS-3 without the pike nose.

The third IS-4 prototype (object 701-3) was just a chassis and turret, without gun or engine, used for firing trials. It had a different armour layout compared to the first two prototypes (and also later). The trials from the first two prototypes served as a basis for the fourth, which received improved transmission. Then that prototype led to the fifth that received the new turret and improved hull armour, and finally that was refined into the sixth, of which I don’t know the major differences. But this info also suffers from bad sources on the subject.

The original T-10 was the IS-5, not IS-8. And IS-9 and IS-10 were never names for the object 730. IS-8 was the last before Stalin passed away and the destalinisation began. There were also command versions of the T-10B (T-10BK) and T-10M (T-10MK) with radios replacing some of their ammo stowage.

Object 265 was another T-10 prototype, though extremely unclear what it was due to poor sources, it was either a testbed for the M-62T cannon, or a highly modified D-25T called D-25TEh. There’s like three dozen other T-10 prototypes that tested different transmissions (709), nuclear protection (756), floatation devices (755), fire suppression system (739) etc. etc. Though not as interesting for WT.

Non-named prototypes also exist, a T-10B was supposedly improved with the V-12-6B engine (750hp) of the later T-10M, and another T-10 prototype (object 267) was supposedly improved with a modified V-12-6F engine delivering 800hp.

These were the things that were built, but you seem to include paper designs too.

There were of course several other projects to fit different guns in the KV, including the 76mm F-27 and 85mm ZiS-25 that never got built. Not to mention how the 122mm OBM-51 (later renamed BL-13) was originally planned for the KV chassis.

When the IS-1 was being developed there was a counter proposal against it, that essentially redesigned the KV-85 to have a single plate sloped UFP. Can’t remember if it ever made it to paper.

I would add the object 752 and object 777, never built, but designed as successors to the T-10. Both had atleast two designs IIRC. There’s also the 100 tonne version of the 705 that supposedly received the object 718 index.

The hyper velocity 85mm Strela project also encompassed object 277, 278 and 770. And the 770 was also supposedly part of a project for a 140mm smoothbore version of the M-65.

2 Likes

Hey, thanks for all the extra info! But have you got sources to back it all up with?

1 Like

KV prototypes
КВ-1 с "круглой" башней

KV with V-2KF engine, looks to have been installed in one KV-1 mod 1941/42 and two KV-1S.
Tank Archives: Less Armour, More Mobility
Tank Archives: Not Quite a Swallow
Tank Archives: First KV-1S

KV-1 ZiS-22 and KV-1 F-27 (seems the F-27 was actually installed in a KV-1)
Tank Archives: Big Gun for a Small Turret (older, erroneous article with several mistakes)
https://dzen.ru/a/X6mLrIms5A2ak_hI?sid=71581699141559431 (updated article)
Tank Archives: ZiS-5 (3-K) (ignore the caption, read article above for full story)

KV-1 with F-34 (though now I’m starting to suspect it might not be an actual F-34, but again an earlier version of the ZiS-22/ZiS-5) (see above)
Про пушки для танка КВ-1 - Книга про КВ — LiveJournal

EKV
Tank Archives: Wrong Place, Wrong Time
Tank Archives: EKV Production Pitch

History of KV-3 (150, 220, 221, 222, 223) I can’t find that the 220 was called KV-3, I definitely could be wrong on that, but it was called KV-4.
https://dzen.ru/a/X_94ZP2nolPThdf2?sid=170395212105449463
Tank Archives: Mass Breakdown
https://dzen.ru/a/YMsniyPEpkwndI32?sid=170395212105449463
Tank Archives: Kirov Factory Prototypes, March 1941

IS-1 (all prototypes) referred to as IS-3
Tank Archives: IS-3, Take One

IS-2 prototype referred to as IS-3
Tank Archives: Beginnings of the D-25

IS-2 with different early muzzle brakes
Tank Archives: IS with a Heavy Gun

IS-3 prototype Kirovets-1
Tank Archives: Baby IS-3

IS-4 development history
Советский тяжелый танк ИС-4 - Maxim Viktorovich Kolomiets
Tank Archives: IS-4 Start to Finish

The T-10 being called IS-9 and IS-10 is only done by poor sources. No reputable source mentions these names. And again, they don’t even fit the timeline.

T-10MK (I can’t find anything other than forum posts talking about T-10, T-10A and T-10B command versions right now)
Танк T-10

Object 265 (again, poor sources, but all seems to point to it being armed with the M-62 making it not that interesting)
Опытный танк «Объект 265» (СССР) | Dogswar.ru - Стрелковое оружие, военная техника, вооружённые силы мира
ПОСЛЕДНИЙ СЕРИЙНЫЙ ТЯЖЕЛЫЙ ТАНК СССР / Книга: Сверхсекретный Т-10 / Библиотека / Главная / Арсенал-Инфо.рф

Other T-10 prototypes (poor sources)
Отечественные бронированные машины 1945 – 1965 гг. . Техника и вооружение 2014 07 (transmission improvements)
Отечественные бронированные машины 1945-1965 годов | огнестрельное оружие России
Список модификаций Т-10

T-10 with improved engines V-12-6B and V-12-6F (poor sources)
Отечественные бронированные машины 1945 – 1965 гг. . Техника и вооружение 2014 07
Список модификаций Т-10

ZiS-25 gun project
Tank Archives: 85 mm ZiS-25
Tank Archives: ZIS-25
Tank Archives: End of the ZiS-25

OBM-51 gun project
Tank Archives: The KV's Last Bow
Tank Archives: Soviet Very High Power Guns: BL-9

Improved KV-85
Tank Archives: The KV's Last Bow

Object 752 and 777
Несчастливые три семёрки | Warspot.ru

Object 718
Object 718 - Tank Encyclopedia

85mm Strela in 278 and 770 (unknown source, and it does not list 277)

Information on the 140mm M-65GL (М-65ГЛ) smoothbore is spread across the internet, but most point back to russian wikipedia and I’m now starting to question if most of it isn’t bullshit. The project itself is historically reasonable, but I wouldn’t trust any of the information on it currently.
http://37.143.9.186/showthread.php?t=35010

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Thanks a lot! When I have more time I’ll start adding them!

KV-85 and KV-122 are modelled very incorrectly in game, their rear, front middle and lower front armor aren’t the same as on the KV-1S they’re based on. Also their top speeds are again too low. The picture mentions 40km/h, which is lower than KV-1s likely because of the weight, while it’s potential top speed is likely the same 45km/h


https://t34inform.ru/photo/photo_Album_NIBP-1945.html
Also KV-122 has 520hp like the IS series instead of 600 of the KV series

Okay I’ve gone ahead and add a bunch of the things you posted here. I did not go much into the more obscure stuff that we have no photos of. So I might have skipped some if I couldn’t find any photos of them.

Thanks for linking my suggestion posts! Hope they make it into the game, along with all the others!

No problem! I’ll try to keep an eye on the Russian suggestion side of things so that I can link more of the heavy tanks to this post when people make suggestions for them.

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Those guns look so nice but the price of getting one is absurd