A project developed by the School of Tank Technology (STT) in 1958, presenting a medium tank with a high crossing capacity, the maximum weight for its type, and a low silhouette. This vehicle was supposed to have a "pike nose" and an all-cast turret. Its frontal hull and turret armor was planned to be strong enough to compete with Soviet heavy tanks. The vehicle's distinctive feature was a gun with perfect stabilization and low shell velocity.