Tortoise
MENG

The Tortoise heavy assault tank (A39) was a British heavy assault gun design developed in World War II but never put into mass production. It was developed for the task of clearing heavily fortified areas and as a result favoured armour protection over mobility.

Although heavy, at 78 tons, and not readily transported, it was considered reliable and a good gun platform.

Only a six prototypes of the Tortoise had been produced by the end of the war.