German submarine U-878

German submarine U-878 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-878 had a displacement of 1144 t when at the surface and 1257 t while submerged. The U-boat had a total length of 76.76 m, a pressure hull length of 58.75 m, a beam of 6.86 m, a height of 9.60 m, and a draught of 4.67 m. The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4400 PS for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1000 shp for use while submerged. She had two shafts and two 1.92 m propellers. The boat was capable of operating at depths of up to 230 m.

The submarine had a maximum surface speed of 18.3 kn and a maximum submerged speed of 7.3 kn. When submerged, the boat could operate for 63 nmi at 4 kn; when surfaced, she could travel 13850 nmi at 10 kn. U-878 was fitted with six 53.3 cm torpedo tubes (four fitted at the bow and two at the stern), 22 torpedoes, one 10.5 cm SK C/32 naval gun, 180 rounds, and a 3.7 cm Flak M42 as well as two twin 2 cm C/30 anti-aircraft guns. The boat had a complement of forty-eight.

Service history
U-878 was ordered on 2 April 1942 from DeSchiMAG AG Weser in Bremen under the yard number 1086. Her keel was laid down on 16 June 1943 and the U-boat was launched the following year on 6 January 1944. She was commissioned into service under the command of Kapitänleutnant Johannes Rodig (Crew 36) in 4th U-boat Flotilla.

After completing training and work up for deployment, U-878 was transferred to the 33rd U-boat Flotilla. Her first war patrol was a supply run for the beleaguered U-boat base of St. Nazaire. The U-boat left Horten Naval Base on 9 February 1945 and arrived at her destination on 20 March. On the return leg, she was picked up by escorts of convoy ONA 265 on 10 April 1945. HMS Vanquisher (D54) and HMS Tintagel Castle (K399) attacked U-878 with depth charges and squid mortar. U-878 was sunk in position 47.58333°N, -10.55°W, all 51 crew members were lost.