German submarine U-239

German submarine U-239 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

The submarine was laid down on 14 May 1942 at the Friedrich Krupp Germaniawerft yard at Kiel as yard number 669, launched on 28 January 1943 and commissioned on 13 March under the command of Leutnant zur See Ulrich Vöge.

After training with the 5th U-boat Flotilla at Kiel, she went to the 22nd flotilla as a 'school' boat and then back to the fifth flotilla.

She was damaged in Kiel by British bombs on 24 July 1944 and broken up in the same year.

Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-239 had a displacement of 769 t when at the surface and 871 t while submerged. She had a total length of 67.10 m, a pressure hull length of 50.50 m, a beam of 6.20 m, a height of 9.60 m, and a draught of 4.74 m. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2800 to 3200 PS for use while surfaced, two AEG GU 460/8-276 double-acting electric motors producing a total of 750 PS for use while submerged. She had two shafts and two 1.23 m propellers. The boat was capable of operating at depths of up to 230 m.

The submarine had a maximum surface speed of 17.7 kn and a maximum submerged speed of 7.6 kn. When submerged, the boat could operate for 80 nmi at 4 kn; when surfaced, she could travel 8500 nmi at 10 kn. U-239 was fitted with five 53.3 cm torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm SK C/35 naval gun, 220 rounds, and two twin 2 cm C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.

Fate
She was damaged in a British air raid at the Germania Werke in Kiel on 24 July 1944 which also killed one crewman, she was then broken up later that same year.