I just watched a show on PBS's Nova called Nazi Attack on America. It contained the following info (from http://uboat.net/all...hants/1981.html) :
Robert E. Lee American Steam passenger ship
Courtesy of the Mariners Museum, Newport News, VA
Name Robert E. Lee Type: Steam passenger ship Tonnage 5,184 tons Completed 1924 - Newport News Shipbuilding & Dry Dock Co, Newport News VA Owner Eastern SS Co, Boston MA Homeport New York Date of attack 30 Jul 1942 Nationality: American Fate Sunk by U-166 (Hans-Günther Kuhlmann) Position 28° 40'N, 88° 42'W - Grid DA 69 Complement 404 (25 dead and 379 survivors). Convoy TAW-7 (dispersed) Route Port of Spain, Trinidad (21 Jul) - Tampa - New Orleans Cargo Passengers and 47 tons of general cargo and personal effects History Completed in January 1925 Notes on event
At 22.30 hours on 30 Jul 1942 the Robert E. Lee (Master William C. Heath) was hit by one torpedo from U-166, steaming at 16 knots about 25 miles southeast of the entrance to the Mississippi River. Lookouts had spotted the torpedo wake about 200 yards away before it struck just aft of the engine room. The explosion destroyed the #3 hold, vented through the B and C decks and wrecked the engines, the radio compartment and the steering gear. The vessel had been bound for Tampa, but no pilot was available so she was diverted to New Orleans under escort by USS PC-566 which now began dropping depth charges at a sonar contact, sinking the U-boat.
The badly damaged Robert E. Lee first listed to port then to starboard and finally sank by the stern about 15 minutes after the torpedo hit. One officer, nine crewmen and 15 passengers were lost. The survivors of the eight officers, 122 crewmen, six armed guards (the ship was armed with one 3in gun) and 268 passengers on board abandoned ship in six lifeboats, eight rafts and five floats and were soon picked up by USS PC-566, USS SC-519 and the tug Underwriter and landed in Venice, Louisiana.
The passengers aboard the Robert E. Lee were mostly survivors of previously torpedoed ships on their way to the USA. Among the rescued were all 39 men from the Andrea Brøvig, 32 men from the Høegh Giant and 44 men from the Stanvac Palembang, while one man from the latter died in the sinking.
The U-166 was the only U-boat sunk in the Gulf.