German submarine U-277

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 * Ship type=Type VIIC submarine
 * Ship displacement={{convert|769|t|LT|0}} surfaced {{convert|871|t|LT|0|abbr=on}} submerged

German submarine U-277 was a Type VIIC U-boat of the Nazi German Kriegsmarine during World War II.

The submarine was laid down on 3 March 1942 at the Bremer Vulkan yard at Bremen-Vegesack as 'werk' 42. She was launched on 7 November 1942 and commissioned on 21 December under the command of Oberleutnant zur See Robert Lübsen.

Service history
U-274 served with the 8th U-boat Flotilla for training from December 1942 to May 1943 and operationally with the 6th U-boat Flotilla from 1 June. She carried out six patrols, but sank no ships. She was a member of six wolfpacks.

She carried out a short voyage between Kiel in Germany and Bergen in Norway over June 1943.

1st patrol
The boat departed Bergen on 29 June 1943 and docked at Hammerfest via Bear Island on 17 August.

2nd patrol
For her second sortie, U-277 departed Hammerfest on 29 August 1943. Her route took her as far north as Svalbard before arriving at Narvik on 10 October.

3rd and 4th patrols
The boat's third patrol took her round Bear Island, but was otherwise uneventful.

Her fourth foray was followed by a series of short 'hops' between Hammerfest, Narvik, Trondheim and Bergen. During one of them, she ran aground and had to be towed off the offending rocks. The damage caused forced an immediate return to base.

5th and 6th patrols and loss
Her penultimate, official patrol was between Narvik and Hammerfest.

She left Hammerfest for the last time on 11 April 1944. She was sunk southwest of Bear Island by depth charges dropped from a Fairey Swordfish of No. 842 Squadron, Fleet Air Arm on 1 May. The aircraft had come from the carrier HMS Fencer.

Fifty men died; there were no survivors.