German World War II submarine
German submarine "U-842" was a Type IXC/40 U-boat built for Nazi Germany's "Kriegsmarine" during World War II.
"U-842" was ordered on 20 January 1941 from DeSchiMAG AG Weser in Bremen under the yard number 1048. Her keel was laid down on 6 April 1942 and the U-boat was launched on 14 November the same year. She was commissioned into service under the command of "Kapitänleutnant" Wolfgang Heller (Crew 30) in 4th U-boat Flotilla on 1 March 1943.
Design.
German Type IXC/40 submarines were slightly larger than the original Type IXCs. "U-842" 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-842" 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.
Transferred to the 2nd U-boat Flotilla, "U-842" left Kiel on 14 September 1943 for Bergen where she arrived three days later. On 5 October 1943. "U-842" set out for operations in the North Atlantic, where she joined operations against convoy ONS 20. The U-boat escaped an attack by one of the escorts, on 17 October unscathed, joining group "Siegfried" operating against convoy HX 262 on 23 October, and group "Siegfried 3" on 26 October. In the final days of October, she was part of group "Jahn" off Newfoundland. In early November "U-842" was among the U-boats of group "Tirpitz" attacking convoy HX 264, when she was spotted and attacked by an aircraft in the early afternoon of 6 November 1943. Second Support Group, consisting of , , and , attacked the U-boat two hours later, and after more than one hour, "U-842" was sunk by depth charges from "Wild Goose", there were no survivors.
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