The C44aci was designed by UGL Rail in response to a tender issued by Pacific National, who required a locomotive to match the performance of their existing 90 classunits when hauling heavy coal traffic, while still having the ability to work high speed intermodal services, with the change between applications to be simple.
The existing UGL Rail Cv40-9i (NR class) locomotive design was used as a base.
The existing UGL Rail Cv40-9i (NR class) locomotive design was used as a base.