The 'Welman'-type midget was a Royal Navy-built submarine that was never particularly successful, and never saw action. It is not known how many Welmans were produced, but the prototype was built at Welwyn Garden City. A one-man. submarine, it had no periscope, and vision was through armoured glass segments in the small 'conning tower'. Designed to fix a 560-pound charge to its target by means of magnetic clips, the Welman could never be made to work properly and was finally abandoned.
Other underwater assault craft were tested towards the end of the war, including submersible canoes and supply craft for clandestine operations. An X-craft with a conning tower was
