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 a 2 cm C/30 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 one warship , damaged one merchant ship , one auxiliary warship and cause one warship total loss.

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.