Developed at the Construction Bureau of Factory No. 73 in early 1953. From March 8 through March 10, 1953, the Ministry of Transport and Heavy Engineering considered the project, along with an alternate version of the tank with a more conventional configuration. However, the development was eventually discontinued.
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%.