|Ordered||15 Aug 1940|
|Laid down||7 Aug 1941||Blohm & Voss, Hamburg (werk 604)|
|Launched||29 Apr 1942|
|Commissioned||25 Jun 1942||Oblt. Heinrich Hasenschar|
|Successes||4 ships sunk, total tonnage 21,765 GRT|
3 ships damaged, total tonnage 20,450 GRT
Sunk 3 July, 1943 north-west of Cape Ortegal, Spain, in position 44.11N, 08.45W, by depth charges from a British B-24 Liberator aircraft (Sqdn. 224/J). 49 dead (all hands lost).
U-628 operated with the following Wolfpacks during its career:
Ungestüm (11 Dec 1942 - 30 Dec 1942)
Hartherz (3 Feb 1943 - 7 Feb 1943)
Ritter (11 Feb 1943 - 26 Feb 1943)
Without name (15 Apr 1943 - 18 Apr 1943)
Specht (19 Apr 1943 - 4 May 1943)
Fink (4 May 1943 - 6 May 1943)
Attacks on this boat
3 Jul 1943
The sinking of U-628 14.05 hrs, NW of Cape Ortegal, outbound: British Liberator FL963 (RAF Sqdn 224/J, pilot S/L P.J. Cundy, DFC) dropped 18 35lb A/S bombs on an initial attack run (the first use of this new weapon), then followed it up with 4 depth charges. Survivors were seen in the water after U-628 sank, but none were rescued. Despite being hit by flak in a fuel tank and the starboard wing, fin and rudder the aircraft returned to St. Eval to make a safe landing. (Sources: Franks/Zimmerman)
1 recorded attack on this boat.
Men lost from U-boats
Unlike many other U-boats, which during their service lost men due to accidents and various other causes, U-628 did not suffer any casualties (we know of) until the time of her loss.