German submarine U-321

German submarine U-321 was a Type VIIC/41 U-boat of the Nazi German Kriegsmarine during World War II.

She carried out two patrols, but did not sink any ships.

The boat was sunk in April 1945 by a Polish aircraft in the Atlantic Ocean.

Service history
The submarine was laid down on 21 January 1943 by the Flender Werke yard at Lübeck as 'werk' 321, launched on 27 November 1943 and commissioned on 20 January 1944 under the command of Kapitänleutnant Ulrich Drews.

She served with the 4th U-boat Flotilla for training, from 20 January 1944 to 28 February 1945 and the 11th flotilla for operations until her sinking on 2 April 1945.

1st patrol
U-320 departed Kiel on 1 March 1945 and arrived in Horten (south of Oslo), on the 9th.

2nd patrol and loss
The boat left Horten on 15 March 1945. On 2 April she was sunk by a Polish Vickers Wellington of No. 304 Squadron RAF southwest of Ireland.

Forty-one men died; there were no survivors.