Development of KV-220 on the basis of the KV heavy tank started in the summer of 1940. A prototype was built on December 5. Unlike other KV modifications, the tank featured an elongated hull, additional support roller, enhanced armor (100 mm), and a new turret with the 85 mm F-30 gun. In the fall of 1941, production of the KV-1 was discontinued. The vehicle received the mass-produced KV turret and was sent to the frontlines.
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Time for the successive autoreloading of each shell into the magazine.
The improved system allows the time to be decreased for autoreloading the next shell upon firing the loaded shell when the corresponding indicator is displayed
Characteristics are specified for Siege mode.
The technical characteristics are displayed for the charged turbine mode.
Characteristics are specified for Rapid mode.
Reload time of the first and second guns on double-barreled vehicles.
Characteristics are specified for vehicles with crews trained to 100%.