SM UC-4
SM UC-4 was a German Type UC I minelayer submarine or U-boat in the German Imperial Navy during World War I. The U-boat had been ordered by November 1914 and was launched on 6 June 1915. She was commissioned into the German Imperial Navy on 10 June 1915 as SM UC-4. Mines laid by UC-4 in her 73 patrols were credited with sinking 36 ships. UC-4 was scuttled off the coast of Flanders during the German evacuation on 5 October 1918.
Design
A Type UC I submarine, UC-4 had a displacement of when at the surface and while submerged. She had a length overall of, a beam of, and a draught of. The submarine was powered by one Daimler-Motoren-Gesellschaft six-cylinder, four-stroke diesel engine producing, an electric motor producing, and one propeller shaft. She was capable of operating at a depth of.The submarine had a maximum surface speed of and a maximum submerged speed of. When submerged, she could operate for at ; when surfaced, she could travel at. UC-4 was fitted with six mine tubes, twelve UC 120 mines, and one machine gun. She was built by AG Vulcan Stettin and her complement was fourteen crew members.