T-35

T-35
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Name	T-35
Caption	Interwar multi-turreted heavy tank
Origin	Soviet Union
Type	Heavy tank
Service	1934–1941
Used by	Soviet Union
Designer	Nikolay Dyrenkov; Nikolay Astrov; OKMO
Design date	1929–1933
Manufacturer	KhPZ; Kirov Plant
Production date	1933–1939
Number	~61
Weight	45–58t
Length	8.35m
Width	3.4m
Height	3.4m
Armour	10–80 mm
Primary armament	76.2 mm tank gun
Secondary armament	45 mm gun; 7.62 mm DT machine guns
Engine	M-17 V12 petrol
Speed	28 km/h (road)
Crew	9–11

T-35 The T-35 was a Soviet interwar heavy multi-turreted tank produced in the 1930s, notable for its distinctive five-turret layout and role as a breakthrough vehicle within Red Army mechanized formations. Developed amid contemporaneous armoured experimentation alongside designs from Vickers and influenced by concepts tested by British Army and German Reichswehr, it served prominently in Soviet mechanized corps parades and early World War II operations before suffering heavy losses in 1941. The vehicle became emblematic of prewar Soviet industry and doctrinal debates between proponents of multi-turreted designs and advocates of concentrated firepower like the designers at Kirov Plant.

Development and Design

Design work began during projects at KhPZ and Leningrad Kirov Plant following directives from the Red Army General Staff and the RKKA Armored Directorate. Influences included trials with Vickers A1E1 Independent prototypes and analyses of World War I and Spanish Civil War actions, prompting designers such as Nikolay Dyrenkov and teams at OKMO to prioritize shock employment, cross-country mobility, and command capabilities. The layout featured a main central turret mounting a 76.2 mm gun derived from F-32 and secondary turrets with 45 mm and DT machine guns, reflecting debates between proponents of multi-turret concepts championed by officers like Mikhail Tukhachevsky and critics including engineers at STZ and theorists aligned with Kliment Voroshilov.

Crew accommodations and communication systems were developed alongside experiments with radio sets from Rostselmash and optics from KMZ; however, industrial limitations at Gosplan and supply constraints at People's Commissariat of Heavy Industry affected armor casting and drivetrain reliability. Prototypes underwent trials at Kubinka proving grounds and were displayed during Red Square parades, symbolizing prestige projects promoted by the Workers' and Peasants' Red Army leadership.

Technical Specifications

The vehicle weighed between 45 and 58 tonnes depending on armor and equipment, powered by the M-17 V12 engine licensed from BMW production. Suspension employed leaf springs and bogie units similar to contemporaries at Kharkiv Tram Depot designs. Maximum road speed approached 28 km/h with operational range constrained by fuel capacity and gearbox durability, issues noted by inspectors from Goskomoboronprom. Armor thickness ranged from 10 mm on sponsons to 80 mm on the frontal glacis, influenced by ballistic studies conducted at TsNII-48. Armament combined a primary 76.2 mm gun, a 45 mm anti-tank gun in a forward turret, and multiple 7.62 mm DT machine guns adapted from Degtyaryov patterns; fire control was rudimentary compared with systems fielded by Wehrmacht armored units. Crew size of nine to eleven allowed specialization among commander, gunners, gunner-loaders, driver, radio operator and mechanics, reflecting doctrines promoted in manuals from the Frunze Military Academy.

Operational History

After production at KhPZ and limited runs at STZ, units were allocated to independent heavy tank battalions and used in demonstrations for Komsomol events and high command reviews. The T-35 served with formations stationed in the Kiev Military District, Leningrad Military District, and near Moscow Military District, assigned to roles envisaged in interwar operational art for breakthrough and exploitation alongside BT series fast tanks and T-26 infantry tanks. Maintenance demands and logistical strain led to concentrated depot support from workshops at Zavod 8 and dependence on spare parts shipments organized by NKTP.

Doctrinal evaluations by Red Army staff officers highlighted strengths in shock presence and shortcomings in mechanical reliability, strategic mobility and vulnerability to combined arms tactics refined by observers from Spanish Civil War and later confirmed by clashes with Wehrmacht forces.

Combat Service and Losses

T-35 units first saw combat during the Soviet invasion of Poland and in border skirmishes; their most consequential engagement occurred during Operation Barbarossa when heavy losses were sustained in the face of German air power from Luftwaffe units and coordinated panzer formations of Heer. Mechanical breakdowns, congested retreat routes during the Battle of Białystok–Minsk and Battle of Smolensk, and logistical shortfalls led to abandonment or capture of many vehicles by units of Heer such as Panzergruppe 3 and Panzergruppe 4. Captured examples were examined by Wehrwissenschaft institutes and displayed in German propaganda alongside trophies from the Minsk area.

Survivors were often cannibalized for parts at repair depots under the People's Commissariat of Defense; documented losses are recorded in after-action reports from commanders at 37th Tank Brigade and regional headquarters involved in the Western Front.

Variants and Modifications

Production iterations included changes to armament layouts, armor thickness and turret arrangements developed by engineers at Factory No. 183 and Plant No. 112. Experimental conversions fitted radio equipment from Rostelecom prototypes, modified engine mounts for improved cooling inspired by Kharkiv Tractor Plant practices, and adaptations for bridging and recovery similar to trials conducted by Engineer Troops units. A small number underwent field modifications by crews influenced by techniques taught at KUVNAS schools to improve reliability and defensive capability; none evolved into mass-produced successor models, as doctrine shifted toward single-turret designs exemplified by development at Factory No. 185 and later by the KV series and IS series projects.

Surviving Vehicles and Preservation

Only a handful of original vehicles survived postwar, with one restored hull conserved in a museum context at Kubinka Tank Museum and fragments preserved at institutions such as the Patriot Park exhibition and displays curated by Central Armed Forces Museum specialists. Allied and German technical reports led to artifacts being retained by research institutes including Heeresversuchsanstalt archives; parts and replicas feature in collections at Museum of the Great Patriotic War and static exhibits in Saint Petersburg and Moscow. Ongoing restoration efforts involve collaboration between heritage groups, industrial partners formerly of KhPZ lineage, and curators from the Russian Military Historical Society.

Category:Interwar tanks of the Soviet Union Category:Heavy tanks