Busch, Rainer Röll, Hans-Joachim (1997).She was the first of over 1,000 U-boats to serve during the Battle of the Atlantic, and one of over 700 to be lost at sea. In June 2007, the wreck of U-1 was located by divers. The entire aft section of the boat was blown off and all hands lost. She was struck by a mine in British minefield Field No. U-1 sent a brief radio signal on 6 April, giving her position, before she disappeared.
She failed to find a target, but was sent out again on 4 April, in preparation for Operation Weserübung (the invasion of Norway). When war came, there were already plans to shelve her and her immediate sister boats for use as training boats only.ĭespite this however, owing to a shortage of available units she sailed on 29 March 1940 against British shipping operating off Norway, close to the limit of her effective operating range. Her rapid construction, combined with the inadequacy of the technology which was used to create her, made her uncomfortable, leaky and slow. Her pre-war service was unremarkable, but she did gain a reputation as a poor ship. U-1 was fitted with three 53.3 cm (21 in) torpedo tubes at the bow, five torpedoes or up to twelve Type A torpedo mines, and a 2 cm (0.79 in) anti-aircraft gun. When submerged, the boat could operate for 35 nautical miles (65 km 40 mi) at 4 knots (7.4 km/h 4.6 mph) when surfaced, she could travel 1,600 nautical miles (3,000 km 1,800 mi) at 8 knots (15 km/h 9.2 mph). The submarine had a maximum surface speed of 13 knots (24 km/h 15 mph) and a maximum submerged speed of 6.9 knots (12.8 km/h 7.9 mph). The boat was capable of operating at depths of up to 80–150 metres (260–490 ft). She had two shafts and two 0.85 m (3 ft) propellers. The submarine was powered by two MWM RS 127 S four-stroke, six-cylinder diesel engines of 700 metric horsepower (510 kW 690 shp) for cruising, two Siemens-Schuckert PG VV 322/36 double-acting electric motors producing a total of 360 metric horsepower (260 kW 360 shp) for use while submerged. Officially, the standard tonnage was 250 long tons (250 t), however. U-1 had a displacement of 254 tonnes (250 long tons) when at the surface and 303 tonnes (298 long tons) while submerged. German Type II submarines were based on the Finnish submarine Vesikko. She was commissioned on 29 June 1935 after a very rapid construction, and was manned by crews trained in the Netherlands. German submarine U-1 was the first U-boat (or submarine) built for Nazi Germany's Kriegsmarine following Adolf Hitler's abrogation of the terms of the Treaty of Versailles in 1935, which banned Germany possessing a submarine force.Ī Type IIA U-boat, she was built at the Deutsche Werke shipyards in Kiel, yard number 236, her keel being laid on 11 February 1935 amid celebration. 5 × torpedoes or up to 12 TMA or 18 TMB mines.2 × 0.85 m (2 ft 9 in) three-bladed propellers.
Sunk 6 April 1940 north of Terschelling by a British mine
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