|Ordered||5 Jun 1941|
|Laid down||26 Jun 1942||Blohm & Voss, Hamburg (werk 173)|
|Launched||10 Mar 1943|
|Commissioned||15 Apr 1943||Oblt. Klaus Paepenmöller|
|Successes||No ships sunk or damaged|
Sunk 6 March, 1944 north-west of Narvik, in position 70.40N, 05.48E, by rockets from a Swordfish aircraft of the British escort carrier HMS Chaser (Sqdn 816/X). 51 dead and 2 survivors.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-973 did not suffer any casualties (we know of) until the time of her loss.