Name U-745 Yard number 1548 Commissioned 19 June 1943 Launched 16 April 1943 Draft 4.74 m | Ordered 5 June 1941 Laid down 8 July 1942 Construction started 8 July 1942 Length 67 m Beam 6.18 m | |
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Fate Lost at sea on 30 January 1945 off the Gulf of Finland | ||
U-745 was a Type VIIC U-Boat built for Nazi Germany's Kriegsmarine for service during World War II, and which was lost at sea on 30 January 1945.
Contents
U-745 was launched on 16 April 1943, under the command of Wilhelm von Trotha, who would remain its commanding officer for its entire service. U-745 had a crew of 45.
Design
German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-745 had a displacement of 769 tonnes (757 long tons) when at the surface and 871 tonnes (857 long tons) while submerged. She had a total length of 67.10 m (220 ft 2 in), a pressure hull length of 50.50 m (165 ft 8 in), a beam of 6.20 m (20 ft 4 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.74 m (15 ft 7 in). The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of 2,800 to 3,200 metric horsepower (2,060 to 2,350 kW; 2,760 to 3,160 shp) for use while surfaced, two AEG GU 460/8–27 double-acting electric motors producing a total of 750 metric horsepower (550 kW; 740 shp) for use while submerged. She had two shafts and two 1.23 m (4 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).
The submarine had a maximum surface speed of 17.7 knots (32.8 km/h; 20.4 mph) and a maximum submerged speed of 7.6 knots (14.1 km/h; 8.7 mph). When submerged, the boat could operate for 80 nautical miles (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 8,500 nautical miles (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph). U-745 was fitted with five 53.3 cm (21 in) torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one 8.8 cm (3.46 in) 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
She undertook four patrols during her service, and sank one allied auxiliary ship, the Soviet minesweeping trawler T-45 Antikajnen (No 48), and one allied warship, the Soviet fleet minesweeper T-76 Korall.
Fate
On 30 January 1945, she was lost with all hands in the Gulf of Finland, probably having sunk by a mine laid by the Finnish minelayers Louhi and Ruotsinsalmi on 12 January 1945.
Wilhelm von Trotha's body was later found near Föglö, Finland, and was buried three days later. No other bodies were recovered. Unlike most U-Boats, which suffered casualties during the course of service due to accidents or other causes, U-745 suffered no casualties at all, until the time of her disappearance.
In late 2012 the Finnish diving team 'Badewanne', after 10 years of searching, reported they had found both U-676 and U-745 in the Gulf of Finland south of Hanko.