Engines "Yx 126" and "Yx 138" were dispatched for Fremantle before the first air raid occurred at Darwin. As shipping was rather disorganised by the end of March 1942 it was decided to return them to Port Augusta for conveyance overland to Darwin, but before the instructions to do this were issued it was found that they had been loaded on the Gorgon which was to proceed to Darwin. On completion of the loading, the Navy instructed the vessel that the western route was closed so it proceeded to Sydney were both locomotives were unloaded. As a result the engines were broken down into parts shipped by rail on 29.4.1942 and then by road to arrive at Larrimah on 30.5.1942.