|21 Nov 1940
|17 Dec 1942
|Kriegsmarinewerft (KMW), Wilhelmshaven (werk 157)
|23 Dec 1943
|17 Feb 1944
|Oblt. Johann Buttjer
|No ships sunk or damaged
This boat was fitted with a Schnorchel underwater-breathing apparatus and sailed equipped with it in March 1945 but it was of course installed prior to that date.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-774 did not suffer any casualties (we know of) until the time of her loss.
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