Experimental heavy tank. The vehicle was an early version of the T29 with enhanced armament. Two prototypes were built in 1945–1947 and underwent trials at the Aberdeen Proving Ground in 1948. Never entered mass production or saw service.
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%.