One of Australia’s leading submarine experts believes that the nation’s greatest wartime mystery — the loss of submarine AE1 and 34 crew in 1914 — could soon be solved. Former submariner and retired Rear Admiral Peter Briggs said an “object” found on the ocean floor near Rabaul in Papua New Guinea was possibly the lost submarine HMAS AE1. Admiral Briggs was closely involved in the 1998 campaign to locate and preserve her sister boat the AE2 lost in the Dardanelles in April 1915. In September this year the Navy Mine Hunter HMAS Yarra conducted a detailed search of waters to...