mid-Atlantic Ocean. After another 20 days, U-66 headed for her new base at Lorient, on the French Atlantic coast (one of the first to do so) and where the U-boat was based for the rest of her career. Second After refitting and refueling, U-66 set off to the Cape Verde islands. Following an uneventful six-day voyage, she came upon convoy SL-78, a convoy designated to give supplies to Allied African countries. The convoy had been attacked just recently by and , one of which (U-123) was in her flotilla. U-66 sank George J. Goulandris and Kalypso Vergotti, two Greek merchantmen of 4,345 and , respectively, west of the Canary Islands. She extended her tonnage sunk with the torpedoing of Saint Anselm on the next day, which was a British steam merchant ship of 5,614 GRT. More than two weeks later, she sank Holmside, a 3,433 GRT straggler from the convoy OG-67 northeast of the Cape Verde Islands. The remainder of the patrol was unsuccessful; she returned to Lorient in about a month. Third On 28 August, U-66 left Lorient for north-eastern South America. The patrol was mostly uneventful, but the boat found the Panamanian steam tanker I.C. White (), off the eastern coast of Brazil on 24 September. After a two-day chase, U-66 hit the tanker with one torpedo. U-66 continued the remainder of the patrol without any further incident and returned to Lorient on 9 November. Fourth U-66s fourth sortie was part of Operation Drumbeat, a German attempt to hinder American convoys off the east coast of the United States. U-66, leaving on 25 December 1941 and in compliance with orders, positioned herself off Cape Hatteras on 15 January 1942 and started to hunt for a target. She found the 6,635 GRT American steam tanker Allan Jackson three days later and sank her with two torpedoes north-east of Diamond Shoals, North Carolina. The next day she sank a Canadian passenger liner, , with two stern-launched torpedoes, killing 246 passengers and crew. Another five died in a lifeboat before 71 survivors were rescued five days later by . Three days later with two stern-launched torpedoes she hit Olympic, a Panamanian steam tanker which broke in two after one minute. Two days after that, Empire Gem and Venore (an British motor tanker and an American steam merchant ship, the latter following the former), were both sunk by U-66. Empire Gem was