|Ordered||16 Jan 1940|
|Laid down||26 Oct 1940||Deutsche Werke AG, Kiel (werk 288)|
|Launched||4 Oct 1941|
|Commissioned||5 Nov 1941||Korvkpt. Karl Brandenburg|
|Successes||2 ships sunk, total tonnage 15,593 GRT|
1 ship damaged, total tonnage 8,939 GRT
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-457 did not suffer any casualties (we know of) until the time of her loss.