German submarine U-1203

German submarine U-1203 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 15 May 1943 by F Schichau GmbH, Danzig as yard number 1573, launched on 9 December 1943 and commissioned on 10 February 1944 under Kapitänleutnant Erich Steinbrink.

Service History
The boat's career began with training at 8th Flotilla on 10 February 1944, followed by active service on 1 December 1944 as part of the 11th Flotilla.

Wolfpacks
U-1203 took part in no wolfpacks.

Fate
U-1203 surrendered on 9 May 1945 in Trondheim. She was initially transferred to Loch Ryan, Scotland on 29 May 1945, and sunk on 8 December 1945 at 55.83333°N, -10.08333°W as part of Operation Deadlight.