German submarine U-123 damaged US tanker Gulfamerica within 5 kilometers of Jacksonville, Florida, United States at 0422 hours, killing 19 of 48 aboard; the burning hulk would finally sink 5 days later. German submarine U-203 damaged US tanker Harry F. Sinclair Jr. 20 kilometers southeast of Swansboro, North Carolina, United States at 1320 hours, killing 10 of 36 aboard; the hulk would later be towed for repairs. 20 kilometers further east, U-160 sank British ship Ulysses; all 290 aboard survived. German submarine U-103 sank Norwegian ship Grenanger in the middle of the Atlantic ocean at 1855 hours; all 36 aboard survived. Finally, off Brazil, Italian submarine Calvi sank Norwegian vessel Balkis.
