The KV-4 family of tanks were built to rather loose requirements, and therefore had a very large variety of designs submitted. F.A. Marishkin's 85 ton design was one of the more reasonable ones, but it wasn't without an unusual feature. The tank had a second turret carrying a 45 mm gun on top of the main turret with a 107 mm gun.
Armour:
- Turret platform front: 125 mm
- Upper sloped front: 80 mm
- Lower front: 130 mm
- Rear: 125 mm
- Roof: 40-50 mm
- Front floor: 50 mm
- Rear floor: 40 mm
Tactical-technical characteristics:
- Mass: 85 tons
- Full length: 8.7 meters
- Full width: 3.8 meters
- Full height: 3.5 meters
- Wheel base: 3 meters
- Clearance: 0.55 meters
- Contact surface length: 6.15 meters
- Ground pressure: 0.53 cm/kg²
- Diesel engine type: 17-40
- Maximum engine power: 1200 hp
- Range: 12 hours
- Crew: 7
Armament:
- 1 107 mm gun
- 1 45 mm gun
- 1 coaxial machinegun (paired with 45 mm gun)
- 2 independent machineguns (rear and front)
- 100 107 mm rounds
- 200 45 mm rounds
- 1000 PPSh rounds for 3 submachineguns
- 107 mm gun elevation: 15 degrees
- 107 mm gun depression: -5 degrees
- 45 mm gun elevation: 20 degrees
- 45 mm gun depression: -5 to -10 degrees
- 45 mm gun arc: 180 degrees
- Machinegun elevation: -
- Machinegun depression: -
- Machinegun range: -
Suspension: torsion bar
Road wheels: steel with internal shock absorption
Radio: 10-R