The German destroyer Z1 Leberecht Maass was a Type 1934 destroyer built for Nazi Germany's Kriegsmarine. The ship was named after Rear Admiral Leberecht Maass who commanded German forces in the Battle of Heligoland Bight in August 1914. Several days after the start of World War II, she unsuccessfully attacked, together with another destroyer, Polish ships anchored at the naval base on the Hel Peninsula. Leberecht Maass was lightly damaged during the action. In mid-February 1940, while proceeding into the North Sea to search for British fishing trawlers, the ship was bombed by a patrolling German bomber that damaged her steering. She either drifted into a newly laid British minefield or was again hit by bombs and broke in half with the loss of the bulk of her crew.