The GT46C is a model of diesel-electric locomotive designed and built by Clyde Engineering using Electro-Motive Diesel components. A number of Australian rail freight operators purchased them from 1997: Westrail as the Q class, FreightLink as the FQ class, and Freight Australia as the single-locomotive V class. As of 2022, all 24 locomotives were owned by Aurizon following its purchase of certain One Rail Australia assets in July 2022.