Sixty-miler

Sixty-miler (60-miler) is the colloquial name for the ships that were used in the coastal coal trade of New South Wales, Australia. The sixty-milers delivered coal to Sydney from ports and ocean jetties to the north and south. The name refers to the approximate distance by sea—actually 64 nautical miles—from the Hunter River mouth at Nobbys Head to the North Head of Sydney Harbour.