•YEARS BUILT: 1959-1966
•MANUFACTURER: General Electric
•OPERATED ON: Santa Fe, Burlington, Chesapeake & Ohio, Erie Lackawanna, Great Northern, Louisville & Nashville, Milwaukee Road, New York Central, New Haven, Pennsylvania Railroad, Frisco, Southern Pacific, Union Pacific, Rock Island, Wabash
•NAME: U-boat
•QUANTITY: 478
•HORSEPOWER: 2,500
•KNOWN FOR: General Electric’s first road diesel
•STATUS: One remains in operation, Southern Pacific 3100, and several located in museums

