German submarine U-453

German submarine U-453 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 4 July 1940 by Deutsche Werke in Kiel as yard number 284, launched on 30 April 1941 and commissioned on 26 June 1941 under Kapitänleutnant Egon-Reiner von Schlippenbach (Knight’s Cross).

The boat's service began on 26 June 1941 with training as part of the 7th U-boat Flotilla, followed by active service until being transferred to the 29th flotilla on 1 January 1942, based in La Spezia in Italy.

Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-453 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 Siemens-Schuckert GU 343/38–8 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-453 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 an anti-aircraft gun. The boat had a complement of between forty-four and sixty.

Service history
In 17 patrols she sank nine merchant ships for a total of, plus two warships and damaged two merchant ships.

Fate
She was depth charged and sunk by on 21 May 1944 off the south coast of Italy at position 38.21667°N, 16.5°W by Royal Navy destroyers HMS Termagant (R89), HMS Tenacious (R45) and the escort destroyer HMS Liddesdale.