German submarine U-575 was a Type VIIC U-boat in service of Nazi Germany's Kriegsmarine during World War II. She carried out ten patrols, sailing for 472 days and sinking eight ships totalling 36,010 gross register tons (GRT) and damaged one other of 12,910 GRT. She was a member of 18 separate wolfpacks and was sunk north of the Azores by Allied ships and aircraft on 13 March 1944.

MV Abosso was a passenger, mail, and cargo liner, the flagship of Elder Dempster Lines. In peacetime she ran scheduled services between Liverpool and West Africa. In the Second World War she was a troop ship, running between the United Kingdom, West Africa, and South Africa.