| Year | 1941 |
| Vehicle Type | Heavy Tank |
| Origin & Designer | [@designer] |
| Numbers Produced | 1.121 |
| Crew | 5 (Commander/Loader, Gunner, Radio Operator & Two Drivers) |
| Main Armament | 1 x 76.2mm L/41 Zis-5 or F-34 Gun |
| Main Armament | [@sponson_traverse] |
| Elevation | -4° to +25° |
| Turret Traverse | 360° (Manual) |
| Gun Traverse | [@gun_traverse] |
| Gun Mount | [@gun_mounts] |
| Maximum Range | [@maximum_range] |
| Armour Penetration | [@armour_penetration] |
| Gun Sight | TMFD-PTK |
| Secondary Armament | 3 x 7.62mm DT Machine Guns (Coaxial, Turret Rear & Bow) |
| Smoke Discharger | [@smoke_discharger] |
| Ammunition Carried | 114 x 76.2mm & 3.024 x 7.62mm |
| Height | 2.70m |
| Width | 3.30m |
| Length | 6.80m |
| Combat Weight | 45.000 kg |
| Ground Clearance | 0.45m |
| Fording Depth | 1.50m |
| Trench Crossing | 2.70m |
| Obstacle Clearance | 1.0m |
| Climbing Ability | 36° |
| Radio | 71-TK-3 |
| Armour | Hull Front: 75mm Hull Sides: 75mm Hull Rear: 75mm Hull Top: 35mm Hull Bottom: 35mm Gun Mantle: 90mm Turret Front: 75mm (110mm Cast Turret) Turret Sides: 75mm Turret Rear: 75mm Turret Top: 40mm |
| Engine | W-2K (Diesel) |
| Transmission | 5 Forward & 1 Reverse |
| Maximum Road Range | 225 km |
| Maximum Cross Country Range | 180 km |
| Maximum Water Range | [@maximum_water_range] |
| Maximum Road Speed | 30 kph |
| Maximum Cross Country Speed | 13 kph |
| Maximum Water Speed | [@maximum_water_speed] |
| Variants | [@variants] |
| Notes | The KV-1 (Kliment Voroshilov) heavy tank came as a major surprise to the Germans as their standard 37mm anti-tank guns simply bounced off its thick armour. In 1941 it was the best heavy tank in the world and used by the Soviets as a break through tank against prepared defences. It had a combination of heavy armour and powerful gun plus the ability to cross bad terrain, but had poor crew visibility and was slow. It caused upheaval when it was encountered and the only real defense against it was from the 88mm Flak gun. Its slow speed was its down fall and it could not keep pace with the T-34, this and the improvement in German anti-tanks weapons made it less effective and it was gradually phased out to make way for the IS series of heavy tanks. |