Starting at midnight, German submarines U-650, U-375, U-386, U-528, and U-532 attacked Allied convoy ONS 5 in the North Atlantic. They scored no hits until around 1200 hours when US freighter McKeesport sunk by a torpedo from U-528; three attacking submarines were damaged during the attacks and were forced to return to base to receive repairs. Upon learning the attacks, the British Admiralty dispatched additional destroyers to reinforce the escort force.
