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.
The technical characteristics shown are for the Siege mode
Characteristics are specified for a vehicle with crew members trained to 100%.