German submarine U-393

German submarine U-393 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.
She did not carry out any patrols and did not sink or damage any ships.
She was scuttled on 5 May 1945 in Flensburger Förde.

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-393 had a displacement of when at the surface and while submerged. She had a total length of, a pressure hull length of, a beam of, a height of, and a draught of. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of for use while surfaced, two Garbe, Lahmeyer & Co. RP 137/c double-acting electric motors producing a total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to.
The submarine had a maximum surface speed of and a maximum submerged speed of. When submerged, the boat could operate for at ; when surfaced, she could travel at. U-393 was fitted with five torpedo tubes, fourteen torpedoes, one SK C/35 naval gun,, one Flak M42 and two twin C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.

The submarine was laid down on 8 April 1942 at the Howaldtswerke at Flensburg as yard number 25, launched on 15 May 1943 and commissioned on 3 July under the command of Oberleutnant zur See Alfred Radermacher.
She served with the 5th U-boat Flotilla from 3 July 1943 and the 24th flotilla as a trials vessel from 1 November 1944. She then came under the 5th flotilla once more from 1 April 1945.

U-393 was bombed by US aircraft in Geltinger Bucht on 4 May 1945. Two men were killed; there were an unknown number of survivors. She was scuttled the following day in the Flensburger Förde near the Fyn Islands.