German submarine U-846
German submarine "U-846" was a Type IXC/40 U-boat built for Nazi Germany's "Kriegsmarine" during World War II. Design. German Type IXC/40 submarines were slightly larger than the original Type IXCs. "U-846" had a displacement of when at the surface and while submerged. 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 MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of for use while surfaced, two Siemens-Schuckert 2  GU 345/34 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-846" was fitted with six torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one SK C/32 naval gun, 180 rounds, and a SK C/30 as well as a C/30 anti-aircraft gun. The boat  had a complement of forty-eight. Service history. "U-846" was ordered on 20 January 1941 from DeSchiMAG AG Weser in Bremen under the yard number 1052. Her keel was laid down on 21 July 1942. The U-boat was launched the following year on 17 February 1943. On 29 May she was commissioned into service under the command of "Oberleutnant zur See der Reserve" Berthold Hashagen (Crew 37) in 4th U-boat Flotilla. After completing training, "U-846" was transferred to 10th U-boat Flotilla and left Kiel for the North Atlantic on 4 December 1943. Joining groups "Amrum" and "Rügen  at the end of the month, returning without success to Lorient on 3 March 1944. U-846" left Lorient again on 29 April. During an air attack on 2 May she managed to shoot down one aircraft, Halifax 'H' of No. 58 Squadron RAF. The next day another aircraft attacked the U-boat without success, but early on 4 May a bomb hit from a Wellington, 'M' of 407 Squadron RCAF, sank "U-846" in position .