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The Kliment Voroshilov (KV) tanks were a series of Soviet heavy tanks, named after the Soviet defense commissar and politician Kliment Voroshilov.
The KV series were known for their extremely heavy armour protection during the early war, especially during the first year of the invasion of the Soviet Union in World War II.
KV 2
Almost completely immune to the 7.5 cm KwK 37 and 3.7 cm KwK 36 guns mounted on the early Panzer III and Panzer IV tanks, until better guns were developed often the only way to defeat a KV was a point-blank shot to the rear. Prior to the invasion, about 500 of the over 22,000 tanks in Soviet service at the time were of the KV-1 type.
When the KV-1 appeared, it outclassed the french Char B1, the only heavy tank used in the world at that time. Yet in the end it turned out that there was little sense in producing the expensive KV tanks, as the T-34 medium tank performed better (or at least equally) in all practical respects. Later in the war, the KV series became a base of development of the Iosif Stalin tanks.
Specifications (KV-1 model 1941)
Weight 45 tonnes
Length 6.75 m
Width 3.32 m
Height 2.71 m
Crew 5
Armour 90 mm maximum
Main armament 76.2 mm model F-34 gun
Secondary armament 3× or 4× DT machine guns
Engine 12-cylinder diesel model V-2
600 hp (450 kW)
Power/weight 13 hp/tonne
Speed 35 km/h (22 mph)
Specifications KV 2
Weight 53.1 tonnes
Length 6.79 m
Width 3.32 m
Height 3.65 m
Crew 6
Armour 110 mm (4.3 in)
Main armament 152 mm howitzer
Secondary armament 3×DT machine guns
Operational range 140 km
Speed 25.6 km/h (15.9 mph)
The KV series were known for their extremely heavy armour protection during the early war, especially during the first year of the invasion of the Soviet Union in World War II.

KV 2
Almost completely immune to the 7.5 cm KwK 37 and 3.7 cm KwK 36 guns mounted on the early Panzer III and Panzer IV tanks, until better guns were developed often the only way to defeat a KV was a point-blank shot to the rear. Prior to the invasion, about 500 of the over 22,000 tanks in Soviet service at the time were of the KV-1 type.
When the KV-1 appeared, it outclassed the french Char B1, the only heavy tank used in the world at that time. Yet in the end it turned out that there was little sense in producing the expensive KV tanks, as the T-34 medium tank performed better (or at least equally) in all practical respects. Later in the war, the KV series became a base of development of the Iosif Stalin tanks.
Specifications (KV-1 model 1941)
Weight 45 tonnes
Length 6.75 m
Width 3.32 m
Height 2.71 m
Crew 5
Armour 90 mm maximum
Main armament 76.2 mm model F-34 gun
Secondary armament 3× or 4× DT machine guns
Engine 12-cylinder diesel model V-2
600 hp (450 kW)
Power/weight 13 hp/tonne
Speed 35 km/h (22 mph)
Specifications KV 2
Weight 53.1 tonnes
Length 6.79 m
Width 3.32 m
Height 3.65 m
Crew 6
Armour 110 mm (4.3 in)
Main armament 152 mm howitzer
Secondary armament 3×DT machine guns
Operational range 140 km
Speed 25.6 km/h (15.9 mph)
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