An undated photo of USS President Lincoln being towed by a tugboat from her pier in Hoboken, New Jersey on one of four successful transatlantic voyages as a U.S. troopship. All told, the former German-American liner carried 23,000 U.S. doughboys to France in World War I. (Soldiers of the 505th Service Battalion keep their life preservers on while eating chow in the submarine zone aboard the troopship USS President Lincoln on her second voyage in late 1917. Soldiers of the 505th Service Battalion keep their life preservers on while eating chow in the submarine zone aboard the troopship USS President Lincoln on her second voyage in late 1917. (freepages.rootsweb.com/~gillespiehistory/military