Between 1947–1948, Baldwin built three unique coal-fired steam turbine electric locomotives, designed for passenger service on the Chesapeake and Ohio Railway. The 6,000 horsepower units which were equipped with Westinghouse electrical systems were 106 feet long, making them the longest locomotives ever built for passenger service. The cab was mounted in the center, with a coal bunker ahead of it and a backwards mounted boiler behind it.
These locomotives were intended for a route from Washington, D.C. to Cincinnati, Ohio but could never travel the whole route without some sort of failure. Coal dust and water frequently got into the traction motors. While these problems could have been fixed given enough time, it was obvious that these locomotives would always be to expensive to maintain and were considered (at the time) to be complete failures. All three were scrapped in 1950.