Chessie system was a US Class I railroad which existed from 1973 to 1986, when it became part of CSX Transportation. There are no Chessie system locomotives in Train Sim World, however, on the Sand Patch Grade route, there are two Chessie System cabooses.

Fallen Flag Railroads
CSX Transportation Chessie System - Conrail - Seaboard System
Norfolk Southern Conrail