|Ordered||10 Apr 1941|
|Laid down||3 Mar 1942||Bremer Vulkan-Vegesacker Werft, Bremen-Vegesack (werk 42)|
|Launched||7 Nov 1942|
|Commissioned||21 Dec 1942||Oblt. Robert Lübsen|
|Successes||No ships sunk or damaged|
Sunk 1 May, 1944 in the Arctic Ocean south-west of Bear Island, Norway, in position 73.24N, 15.32E, by depth charges from a British Swordfish aircraft (Sqdn. 842/C) from the British escort carrier HMS Fencer. 50 dead (all hands lost).
U-277 operated with the following Wolfpacks during its career:
Monsun (30 Aug 1943 - 7 Oct 1943)
Monsun (17 Nov 1943 - 23 Nov 1943)
Eisenbart (23 Nov 1943 - 21 Dec 1943)
Blitz (25 Mar 1944 - 4 Apr 1944)
Donner (11 Apr 1944 - 20 Apr 1944)
Donner & Keil (20 Apr 1944 - 1 May 1944)
General notes on this boat
10 Jan 1944. U-277 had to be towed off after running aground. Damage from the accident forced her return to base.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-277 did not suffer any casualties (we know of) until the time of her loss.