SM U-152

SM U-152 was a Type U 151 submarine of the Imperial German Navy during World War I.

Initially intended as a submersible merchantman for transporting critical war materiel through the British blockade, she was converted to a combat ship while under construction.

Whyland (sunk on 13 March 1918), the Norwegian barque Stifinder (boarded and scuttled on 13 October 1918), the Spanish Giralda (sunk on 25 January 1918), and the U.S. Navy cargo ship USS Ticonderoga.

The latter was sunk, after a two-hour gun battle, with heavy casualties among her crew and passengers, on 30 September 1918.

The previous day, 29 September, the submarine had also fought a gun battle with the Navy oiler USS George G. Henry, but despite being badly damaged the American ship escaped.