|Ordered||15 Aug 1940|
|Laid down||21 Apr 1941||Blohm & Voss, Hamburg (werk 588)|
|Launched||9 Jan 1942|
|Commissioned||5 Mar 1942||Oblt. Paul Siegmann|
|Successes||No ships sunk or damaged|
Sunk on 6 Aug 1942 near Gotenhafen, after a collision with U-444. 2 dead and 43 survivors.
Raised in August 1942 and returned to service on 31 May 1943 as a training boat.
Scuttled on 2 May 1945 at Warnemünde, in position 54.11N, 12.05E. Wreck broken up in 1946.
Men lost from the boat
6 Aug 1942
During working up exercises in the Baltic U-612 sank after colliding with U-444. Two men from U-612 died. The boat was later raised and used for training. [Obermaschinist Wilhelm Merz, Maschinenobergefreiter Gerhard Ehrlich] (The I WO, Herbert A. Werner, described this event in his book Iron Coffins)
Related: For more info on such losses see - Men lost from U-boats -