SS Torrington was a British cargo steamship that was built in England in 1905, owned and registered in Wales, and sunk by a German U-boat in 1917. She was a turret deck ship: an unusual hull design that was developed by William Doxford & Sons of Sunderland in the 1890s.

SM U-55 was one of the six Type U-51 U-boats of the Imperial German Navy during the First World War.