The A22 prototype was built by Vauxhall Motors in the fall of 1940. The vehicle first entered mass production in the summer of 1941. Early modifications had no track fenders, a different fan, and a 3-inch howitzer in the hull. A total of 300 Churchill I tanks were manufactured.
Time for the successive autoreloading of each shell into the magazine.
Characteristics are specified for Siege 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%.