SM U-104

SM U-104 was a German Type U 57 U-boat during the First World War. U-104 was built at AG Weser in Bremen, launched on 3 July 1917 and commissioned on 12 August 1917. She completed four patrols under Kptlt. Kurt Bernis and was responsible for the sinking of nine vessels of a total of.

Loss
On 25 April 1918 the U-104 was engaged by USS Cushing (DD-55) in St. George's Channel and severely damaged. Later the same day HMS Jessamine (1915) came upon her and dropped further depth-charges, sinking her and leaving but a single survivor of her 42-member crew. The wreckage lies at position 51.98333°N, -6.43333°W.