|Ordered||10 Apr 1941|
|Laid down||17 Oct 1942||Deutsche Werke AG, Kiel (werk 308)|
|Launched||3 Jul 1943|
|Commissioned||18 Aug 1943||Oblt. Karl-Joachim Jenssen|
|Successes||No ships sunk or damaged|
Sunk 3 June, 1944 west of Trondheim, Norway, in position 63.59N, 01.37E, by depth charges from a Canadian Catalina aircraft (RCAF-Sqdn. 162/T). 51 dead (all hands lost).
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-477 did not suffer any casualties (we know of) until the time of her loss.