German submarine U-146 (1940)
German submarine "U-146" was a Type IID U-boat of Nazi Germany's "Kriegsmarine"during World War II. Her keel was laid down on 30 March 1940 by Deutsche Werke in Kiel as yard number 275. She was launched on 21 September 1940 and commissioned on 30 October with Eberhart Hoffmann in command. "U-146" began her service life with the 1st U-boat Flotilla. She was then assigned to the 22nd flotilla and subsequently to the 3rd flotilla where she conducted two patrols, sinking one ship, in 1941. She spent the rest of the war as a  training vessel, moving back to the 22nd flotilla. She was scuttled on 5 May 1945. Design. German Type IID submarines were enlarged versions of the original Type IIs. "U-146" had a displacement of when at the surface and while submerged. Officially, the standard tonnage was , however. The U-boat had a total length of , a pressure hull length of , a beam of , a height of , and a draught of . The submarine was powered by two MWM RS 127 S four-stroke, six-cylinder diesel engines of for cruising, two Siemens-Schuckert PG VV 322/36 double-acting electric motors producing a  total of for use while submerged. She had two shafts and two propellers. The boat was capable of operating at depths of up to . The submarine had a maximum surface speed of and a maximum submerged speed of . When submerged, the boat could operate for at ; when surfaced, she could travel at . "U-146" was fitted with three torpedo tubes at the bow, five torpedoes or up to twelve Type A torpedo mines, and a anti-aircraft gun. The boat had a complement of 25. Operational career. First patrol. The submarine's first patrol commenced with her departure from Kiel on  17 June 1941. She crossed the North Sea and negotiated the gap between the Faroe and Shetland Islands. She sank "Pluto" north north-west of the Butt of Lewis (in the Outer Hebrides, Scotland). She then sailed to a point south-west of Ireland. Second patrol. For her second patrol, she left Kiel on 26 July 1941. Her return was on 11 August. No further details are available. Fate. The boat was scuttled in the "Raederschleuse" (lock) at Wilhelmshaven on 5 May 1945. The wreck was broken up on an unknown date.