German submarine U-879

German submarine U-879 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-879 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-879 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-879 was ordered on 2 April 1942 from DeSchiMAG AG Weser in Bremen under the yard number 1087. Her keel was laid down on 26 June 1943 and the U-boat was launched the following year on 11 January 1944. She was commissioned into service under the command of Kapitänleutnant Erwin Manchen (Crew 36) in 4th U-boat Flotilla.

U-879 was transferred to 33rd U-boat Flotilla after completing training and working up for deployment. She left her base in Horten Naval Base on 9 February 1945 for operations off the US east coast. Since another U-boat, GS U-857 was operating at the same time in the vicinity, it is not clear, which ships were attacked U-879 or the other U-boat, which is missing. The US tanker Atlantic States was probably hit and damaged on 5 April 1945, while the Belgian steamer Belgian Airman and the US tanker Swiftscout may have been sunk by U-879 on 14 and 18 April respectively. The Norwegian tanker Katy might have been hit and damaged on 23 April.

Late on 29 April, a U-boat was picked up by escorts of convoy KN 382. USS Natchez (PF-2) tried to ram her but missed. Natchez with three more escorts, USS Coffman (DE-191), USS Thomas (DE-102), and USS Bostwick (DE-103), chased the contact for several hours with depth charges and a hedgehog anti-submarine weapon. In the early hours of 30 April, a strong explosion was heard and the contact disappeared. Only in 1968 a wreck was discovered, confirming the sinking of a U-boat. It is assumed that the U-boat in question was U-879, but there are indicators that it might have been U-857 instead.