SM U-48 was one of the 329 submarines serving in the Imperial German Navy in World War I. U-48 was engaged in the naval warfare and took part in the First Battle of the Atlantic. On 24 November 1917 she ran aground on Goodwin Sands. There she was fired on by HMS Gipsy. U-48 was scuttled and abandoned. Gipsy continued to fire killing 19. 17 were taken prisoner.