HMAS J3 is one of six J-class submarines that served in WWI and subsequently gifted by the British Royal Navy to the Royal Australian Navy after the war. After a refit, it saw limited use in Australia, and was scuttled as a breakwater in Port Phillip Bay, Victoria in 1926.
The J3 wreck was scanned with the Zebedee 3D mapping system in May 2014 by Robert Zlot and Jonathan Roberts (CSIRO), in collaboration with Heritage Victoria, who now manage the site. The length of the scanned section is approximately 45m. A video describing the scanning exercise was filmed for a segment on Coast Australia, and can be viewed on their website. The screenshots were created by Jonathan Roberts, photo taken by Robert Zlot.