The recent problems with the Carnival Triumph highlights the need to travel with a passport. HOUSTON (AP) The operators of a cruise vessel stranded in the Gulf of Mexico after a weekend engine fire say the craft has drifted so far north of its original position that they will tow the ship to Mobile, Ala., instead of their original plan for Progreso, Mexico. Carnival Cruise Lines President and CEO Gerry Cahill says in a statement Monday evening that strong currents lead the vessel, the Carnival Triumph, to drift about 90 miles north of its original position off the Yucatan Peninsula, where it was located when the fire erupted Sunday in the engine room. No one was injured and the fire was extinguished. Cahill's statement says the ship should arrive in Mobile on Thursday and that it will allow for less complicated re-entry for passengers without passports.