German submarine U-383

German submarine U-383 was a Type VIIC U-boat of the Nazi German Kriegsmarine during World War II.

The submarine was laid down on 29 March 1941 at the Howaldtswerke yard at Kiel, launched on 22 April 1942, and commissioned on 6 June under the command of Oberleutnant zur See Horst Kremser.

Service history
U-383 served with the 8th U-boat Flotilla for training, and then operationally with the 9th flotilla from 1 October 1942 to 1 August 1943. She completed four patrols in that time, sinking only one ship, the Icelandic trawler Jon Olafsson on 24 October 1942, during her first patrol.

On the evening of 1 August 1943 U-383 was attacked west of Brittany, at position 47.4°N, -12.16667°W, by a Short Sunderland of No. 228 Squadron RAF. Responding with flak, the U-boat holed the fuselage and shot away the starboard float and aileron of the aircraft, which pressed home its attack and straddled the U-boat with depth charges before heading back to base. Kremser radioed for assistance, and though three U-boats and three torpedo boats searched during the night and the next day, they failed to locate the crippled U-383 and she was presumed lost.