An experimental project for an SPG that used some elements of the U.S. M47 chassis. As compared to the Bat.-Châtillon 155 55, the vehicle had a different turret and featured the magazine loading system. Existed only in blueprints.
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%.