The wreckage of Australia's first naval submarine has been found after 103-years search.
Defence Minister Marise Payne said that HMAS AE-1 was first Allied submarine lost in World War One, vanishing off Rabaul, Papua New Guinea with 35 Australian and British crewmates onboard in 1914.
She said the 13th search mission for the vessel found it in waters off the Duke of York islands in Papua New Guinea.