SM U-93 was one of the 329 submarines serving in the Imperial German Navy in World War I.
U-93 was engaged in the naval warfare and took part in the First Battle of the Atlantic.
HMS Prize Q-ship attacking U-93
HMS Prize was a schooner converted to a Q ship during the First World War and commanded by Lieutenant William Sanders of the Royal Naval Reserve.
A painting depicting Prize shelling U-93
The commander of Prize, William Sanders