Canadian Sunderland JM712 (RCAF Sqn 422/S, pilot F/L P.T. Sargent)
The flying boat attacked U-448 at 12.48 hrs after obtaining a radar contact near convoy ONS 20. U-281 was nearby and assisted by putting up flak during the first attack run. The four depth charges dropped fell short, so the aircraft turned around for a second run, exchanging gunfire with both boats. The Sunderland then dropped two depth charges on U-448, but was heavily hit by flak, which killed the nose gunner and mortally wounded the navigator. The pilot had to ditch in heavy seas near the convoy. He and two aircrew died in the crash, but the remaining seven were picked up by HMS Drury (RN Frigate). U-448 was seriously damaged by the last two depth charges and was forced to return to base. Strafing killed one man and wounded two.Uboat.net: https://uboat.net/history/aircraft_losses.htm?sortby=date
U-448 commander: Oberbootsmaat Fritz Döhler