mines in lieu of the torpedoes. On land it could be equipped with flamethrowers or machine guns. Testing showed that the submarine performed well underwater, but it was considered underpowered on land and the tracks were too narrow. More powerful diesel engines were planned for later models, in addition to wider tracks to spread the load and decrease ground pressure. The prototype was demonstrated to the management of the Borgward factory in Bremen and negotiations began for the production of three preproduction vessels to test the planned changes. The decision by the (Naval High Command) to focus production on models already being manufactured at the beginning of 1945 caused these plans to be canceled. The prototype was transferred to Lübeck and destroyed at the end of the war. Assessment (Vice Admiral) Hellmuth Heye, commander of the German Naval Special Forces (), stated in 1944: "I consider the Sea Devil a promising weapon for use in commando raids. It is independent of mother craft and base personnel, can land on foreign shores, commit acts of sabotage, and evade pursuit ashore or afloat. It can be taken to site by a mother ship equipped with a large crane. With an engine of higher output than that of the experimental boat, a speed of 8 to 10 knots can be obtained. Speed and radius of action could be further increased by installation of a closed-cycle engine. Intended for use in coastal waters if weather is not too rough, and on rivers, lakes and artificial lakes..." References Bibliography External links Midget submarines World War II submarines of Germany 1944 ships