U-2 was ordered from Kaiserliche Werft of Danzig on 4 March 1906, launched on 18 June 1908, and commissioned into the Imperial German Navy on 18 July 1908.

She conducted no war patrols and spent World War I as a training platform.

After Germany's surrender, she was decommissioned on 19 February 1919 and sold for shipbreaking to Stinnes on 3 February 1920.

See also: List of ships of the Imperial German Navy

This article about a specific naval submarine of Germany is a stub.