This photo set of AW (WA) AB Class Diesel Electric Locomotive was taken by Stew Winston at Albany (WA) over a period of time.
AB Class Locomotive - Narrow Guage The AB Class were first introduced late 1969 with only 6 units being built only 3 units are still in service, they being AB 1531, 1534, 1536. The locomotives were built by Clyde Engineering and are rated at 1650hp and weigh 99t.