|Ordered||25 Aug 1941|
|Laid down||2 Nov 1942||Deutsche Werft AG, Hamburg (werk 385)|
|Launched||9 Jun 1943|
|Commissioned||1 Sep 1943||Kptlt. Heinz Bielfeld|
|Successes||No ships sunk or damaged|
Sunk 11 July, 1944 in the Bay of Biscay west of La Rochelle, in position 46.31N, 05.29W, by depth charges from a British Sunderland aircraft (Sqdn 201/P). 56 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-1222 did not suffer any casualties (we know of) until the time of her loss.