Sounds like a great find. Congratulations to those responsible.
From http://www.japundit.com
"One of Australias enduring WWII maritime mysteries has apparently been solved. During the Pacific War, elite Japanese submariners in their midget vessels launched a daring raid on Sydney Harbour intending to sink a US ship that was docked there. Two of the midget submarines were intercepted and disabled, but the third managed to fire its torpedoes and, while missing its target, sunk another Allied vessel and killed 21 servicemen on board. The tiny sub then escaped the harbour and fled out to sea, but failed to rendezvous with its Japanese mother ship which was waiting off the coast. The fate of the submarine was, until now, unknown.
After around 24 ultimately mistaken claims by different groups that they had discovered the wreck since then (including one featured in a History Channel documentary last year), a bunch of amateur divers from Sydney finally located the real deal. The wreckage is just north of Sydney, still above the sea floor and has had its identity confirmed by Royal Australian Navy historians. Its discovery closes the book on one of Australias most elusive and important wartime enigmas and the site will be marked as a Japanese war grave to honour the brave submariners who took part in the raid. "
From http://www.japundit.com
"One of Australias enduring WWII maritime mysteries has apparently been solved. During the Pacific War, elite Japanese submariners in their midget vessels launched a daring raid on Sydney Harbour intending to sink a US ship that was docked there. Two of the midget submarines were intercepted and disabled, but the third managed to fire its torpedoes and, while missing its target, sunk another Allied vessel and killed 21 servicemen on board. The tiny sub then escaped the harbour and fled out to sea, but failed to rendezvous with its Japanese mother ship which was waiting off the coast. The fate of the submarine was, until now, unknown.
After around 24 ultimately mistaken claims by different groups that they had discovered the wreck since then (including one featured in a History Channel documentary last year), a bunch of amateur divers from Sydney finally located the real deal. The wreckage is just north of Sydney, still above the sea floor and has had its identity confirmed by Royal Australian Navy historians. Its discovery closes the book on one of Australias most elusive and important wartime enigmas and the site will be marked as a Japanese war grave to honour the brave submariners who took part in the raid. "