KV-4

The KV-4 (Object 906) was a proposed Soviet heavy break-through tank, developed during World War II as a part of the Kliment Voroshilov tank design series.

Design history

In April 1941, it was decided to create a project for a new Super-heavy tank. It was supposed to be able to defeat any German heavy tank. The project was intended to remain an unbuilt design, until it was needed. Several tank designers were told to create basic concept drawings. Sources differ as to the designers involved. Among those listed are: Kreslavsky; Kuzmin, Tarapatin and Tarotko (who together worked on the same design); Pereverzev; Mikhailov; Kruchenykh; Tseits, K. Buganov; S. Fedorenko; G. Kruchenykh; F. Marishkin; G. Moskvin; N. Strukov; A. Yermolaev; L. Sychev; L. Pereverzev; Bykov; N. Dukhov; M. Kreslavskiy; V. Pavlov; D. Grigorev.^[1]

Basic armour was to be 125 to 130 mm and up to 150 mm over vulnerable areas. A new gun was required. There were about 20 different designs generated by the project. The lightest design was 82.5 tonnes and the heaviest was 107.7 tonnes. All had a 107mm ZiS-6 main gun and all but one had a second tank gun. The second gun was a 45 mm 20-K, or a 76 mm gun. Solutions to the positioning of the guns – turrets or hull mountings – varied. Crew requirements were from 5 to 9 men.

The 107 mm ZiS-6 guns

The F-42 107 mm tank gun was created in Plant #92, in a design bureau under the supervision of V. Grabin. The F-42 was based on the F-39 95 mm tank gun and it was finished in the fall of 1940. By the beginning of 1941, the new gun had been factory tested in a field casemate. In March 1941 it was tested in the turret of a KV-2 tank. The ZiS-6 gun passed factory testing by June 1941, after which it was sent to the Artillery Scientific Test Range at Leningrad.

According to V. Grabin ("Oruzhie Pobedy" - "Weapons of Victory") about 600 ZiS-6 guns had been finished by the fall of 1941. Those guns were all destroyed because the tanks were never going to be made. The plants chief designer wrote that "five serially-produced ZiS-6 cannons were manufactured in July–August 1941, after which their production was halted because the heavy tanks were not ready". Those documents had been signed by V. Grabin.^[2]

References

World War I tanks

List Category

British	"Female" tank "Male" tank Mks I, II, III Mk IV Mk V Mk VI Mark VII Mk VIII Mk IX Medium Mk A "Whippet" Medium Mk B Medium Mk C Little Willie Flying Elephant Killen-Strait Armoured Tractor Lancelot de Mole's proposal* (1912)

French	Schneider CA1 Saint-Chamond Renault FT Breton-Prétot machine Boirault machine Frot-Laffly landship Souain prototype Levavasseur* (1903)

German	A7V K-Wagen LK I LK II Oberschlesien

Austro-Hungarian	Günther Burstyn's Motorgeschütz* (1911)

Italian	Fiat 2000

American	M1917 light tank Ford 3-Ton M1918 Holt Gas-Electric Skeleton tank Steam tank Steam Wheel Tank Three-wheeled steam tank

Russian	Tsar Tank Vezdekhod Mendeleev Tank* Rybinsk tank*

Italics — experimental prototypes; * concept only History WWI Interwar WWII Cold War Tank

Interwar tanks

List Category

Tankettes	L3/33 L3/35 Carden Loyd Morris-Martel T-27 TKS Type 92 tankette Type 94 tankette Type 97 Te-Ke Tančík vz. 33 AH-IV

Light	H35 R35 Fiat 3000 Leichttraktor Light Tanks Mk I–V Light Tank Mk VI Light Tank Mk VII M1 Combat Car M2 Light Tank Panzer I Panzer II LT vz. 34 LT vz. 35 LT vz. 38 T1 Light Tank T7 Combat Car T-18 T-13 T-15 T-19 T-26 T-37 T-38 7TP Type 95 Ha-Go Vickers 6-Ton Vickers-Carden-Loyd Light Amphibious Tank

Medium	Char D1 Char D2 Grosstraktor Medium Mk I Medium Mk II Medium Mk III Panzer III T-24 T-28 Type 97 Chi-Ha Type 97 Chi-Ni Type 98 Chi-Ho

Cavalry, Cruiser or Fast	AMC 34 AMC 35 AMR 33 AMR 35 BT tank Cruiser Mk I Cruiser Mk II Cruiser Mk III SOMUA S35

Infantry	FCM 36 Infantry Mk I, Matilda Renault R35 T-26 Type 89 I-Go

Heavy	Char B1 Neubaufahrzeug SMK T-35 T-100 Type 95 Heavy Tank Vickers A1E1 Independent

Super-heavy	FCM F1 Char 2C T-42

Armoured Carriers	UE Chenillette Bren Gun Carrier

History WWI Interwar WWII Cold War Tank

World War II tanks

List Category

Light	7TP Fiat L6/40 M3/M5 Stuart M22 Locust M24 Chaffee Marmon-Herrington CTLS Renault R40 Schofield T-26 T-40 T-60 T-70 Tetrarch Toldi Type 2 Ke-To Type 2 Ka-Mi Type 3 Ka-Chi Type 4 Ke-Nu Type 4 Ka-Tsu Type 5 Ke-Ho Type 5 To-Ku Type 98 Ke-Ni

Medium	Carro Armato P 40 40 M Turan I Fiat M11/39 Fiat M13/40 Fiat M14/41 Fiat M15/42 M2 Medium M3 Lee M4 Sherman Panzer III Panzer IV Panzer V Panther T-34 T-43 Type 1 Chi-He Type 3 Chi-Nu Type 4 Chi-To Type 5 Chi-Ri Sherman Firefly

Cruiser	Mk IV Mk V Covenanter Mk VI Crusader Mk VII Cavalier Mk VIII Cromwell Mk VIII Challenger Comet Grizzly Ram Sentinel

Infantry	Black Prince Churchill Matilda I Matilda II T-26 T-50 Valentine Valiant Type 2 Ho-I

Heavy	IS tank KV tank M26 Pershing Tiger I Tiger II

Super-heavy	Tortoise T28 TOG1 TOG2 T-35 Panzer VII Löwe Panzer VIII Maus Panzerkampfwagen E-100 Landkreuzer P. 1000 Ratte Landkreuzer P. 1500 Monster O-I

History WWI Interwar WWII Cold War Tank

Cold War tanks

List Category

MBTs	AMX-30 AMX-40 Centurion Challenger 1 Chieftain Chonma-ho EE-T1 Osório K1 88 Leopard 1 Leopard 2 M1 Abrams M60 Patton M-84 Magach MBT-70 MBT-80 Merkava Object 187 Object 292 Object 785 OF-40 Panzer 68 Stridsvagn 103 T-62 T-64 T-72 T-80 TAM TR-85 Type 59 Type 61 Type 69/79 Type 74 Nana-yon Type 88 Vijayanta Vickers MBT WZ-122

Light	AMX-13 Expeditionary tank M8 Armored Gun System M41 Walker Bulldog M551 Sheridan PT-76 Scorpion SK-105 Kürassier Stingray Stridsvagn 74 T92 Light Tank Type 62 Type 63 Type 64 WZ-132

Medium	M26 Pershing M46 Patton M47 Patton M48 Patton Panzer 58 Panzer 61 T-44 T-54/55 T95 Type 58

Heavy	AMX-50 Conqueror IS-3 Object 279 M103 T-10 T30 Stridsvagn KRV WZ-111

Tank destroyers	Infanterikanonvagn 73 Infanterikanonvagn 91 Kanonenjagdpanzer

History WWI Interwar WWII Cold War Tank

Post-Cold War tanks

List
Category

Under 120 mm gun

Ch'ŏnma-ho Ramses II

Under 50 tonnes

Al-Zarrar Al-Khalid P'okpoong-Ho PT-91 Twardy T-84 T-90 Type 10 Type 59G Type 96 Zulfiqar

Over 50 tonnes

Ariete Arjun BM Oplot Challenger 2 K1 88-Tank K2 Black Panther Leclerc Leopard 2 M1 Abrams M60-2000 Merkava Sabra Type 90 Type 99 tank

Not in service

Altay Black Eagle EE-T1 Osório VT-4 Main Battle Tank M-95 Degman M-84AS T-95 Tank EX Type 99KM T-14 Armata

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KV-4

Design history

The 107 mm ZiS-6 guns

See also

References