93s are GE locos made by UGL at Broadmeadow(Newcastle) under licence to GE(General Electric) in the US. PN have 12 of them and they are 4,520 hp.
They are used primarily on MB4/BM4 trains from Brisbane to Melbourne and return and also on steel trains.
An exception to this is that class leader 9301 is way out west(near Kalgoorlie) for crew training purposes.
PN plan to purchase more units.