British submarine HMS Trident and German submarine U-31 exchanged fire in the Bay of Biscay off France; Trident hit U-31 with the deck gun, causing minor damage; both torpedoes fired missed. German submarine U-58 hit British ship Confield 88 miles west of Barra Head, Outer Hebrides, Scotland, United Kingdom at 2131 hours with two torpedoes, killing 1; the ship remained afloat, allowing the remaining 36 to escape via lifeboats. Far to the south, 350 miles northeast of Natal, Brazil, German armed merchant cruiser Thor attacked British refrigeration ship Natia, killing 2; after the remaining 83 crew members were captured, Natia was sunk by a torpedo and two more shells from Thor's 150-mm gun; after this attack, Thor now had 368 prisoners aboard, outnumbering her crew.
