Swedish shipping company rederi A/B Transatlantic ordered new cargo ship for Australian service according to the Australia Station Intelligence Summary dated 1 July 1955

An item reported that the Swedish shipping company rederi A/B Transatlantic, Gothenburg, Sweden ordered a motor cargo ship with a deadweight of 10,500 tons to be delivered at the end of 1956. It was to be her largest ship and to be used for the Australian service. Diesel propulsion (10-cylinder) with a horsepowe of 10,800 ihp/110 rpm allowing a speed of 17.5 knots. 

Source

Website Royal Australian Navy, Sea Power Centre.