The following is a List of Coastal Batteries in Australia and Territories during World War II. The main threat came early in the war from German raiders and threat of Japanese raids or invasion, and hence all available ordnance was pressed into service, including some obsolete guns and field guns adapted for coast defence.
^see Graham McKenzie-Smith (2009), Defending Fremantle, Albany and Bunbury, 1939 to 1945, Grimwade Publications, ISBN978-0-9806291-0-1 - in particular map on page 6 Coast Defences of Fremantle