Cat Up Early. On the morning of Tuesday, July 4, 2023, CSX 157-03 passed over Doodletown Bight near Iona Island, New York with CSXT 1973 (Chessie System, ES44AC) leading. This is the the unit's first trip over the River Sub since being repainted into this heritage scheme and being renumbered 1973 to pay homage to the year of Chessie's creation as a holding company to include the Chesapeake and Ohio Railway (C&O), the Baltimore and Ohio Railroad (B&O), the Western Maryland Railway (WM), and Baltimore and Ohio Chicago Terminal Railroad (B&OCT), one of the predecessors to today's CSX. The name Chessie originated as the cat that was the mascot of the C&O , likely developed from a 1933 magazine advertisement touting their long distance trains with an etching of a cat.