Probably full of 'Ten Quid Poms'.
The Sitmar line which owned Fairstar, Fairsea and the Castel Felice had a contract with the federal government to ship the ten quid poms out to oz. I worked in a bank liaision role on the ships for a few trips around from Freemantle and have very fond memories of some early morning entrances to Sydney harbour which is surely one of the world's greatest stretches of water.