A lone Catalina flying boat of the US 53rd Patrol Squadron returning from a patrol spotted the German submarine U-156 east of Barbados. The submarine was on the surface with her crew sunbathing and fishing on deck, and with hatches open. The lookouts failed to spot the aircraft as it delivered its attack at sea level. Three bombs straddled the submarine which could soon be seen to be sinking fast. A rubber dinghy was dropped but when rescuers arrived no trace could be found of survivors.
