An experimental medium tank. Developed between 1953 and 1958 in Nizhny Tagil to replace the T-54. Two prototypes were built, but in 1958 the project was terminated in favor of the Object 430.
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%.