a heritage site. A exclusion zone was established around the wreck site, and any vessel entering the zone is liable to a fine under New South Wales law of up to A$1.1 million, with additional fines and confiscation of equipment under Commonwealth law. Shore- and buoy-mounted surveillance cameras and a sonar listening device further protect the site. On 7 February 2007, during JMSDF Admiral Eiji Yoshikawa's visit to Australia, Yoshikawa and RAN Vice Admiral Russ Shalders presided over a ceremony held aboard to honour M-24s crew. Relatives of the midget submarines' crews, one of the survivors from Kuttabul, and dignitaries and military personnel from Australia and Japan attended another ceremony on 6 August 2007 at HMAS Kuttabul. then carried relatives of M-24s crew to the wreck site, where they poured sake into the sea before being presented with sand taken from the seabed around the submarine. In May 2012, the NSW state government announced that, with the approval of the Japanese government and the submariners' families, divers would be allowed to observe the M-24'' wreck for a short period of time. Divers would enter a ballot for places on controlled dives run on several days. If successful, opening the site would become an annual event to commemorate the attack. See also Air raids on Australia, 1942–43 Military history of Australia during World War II Explanatory footnotes Citations General and cited references External links Australia's War 1939–1945: Australia Attacked – Sydney Harbour Overview of the events. Includes an animation showing the events immediately prior to and during the attack. Midget Submarines at Sydney, Australia 1942 at Combinedfleet.com. Attack on Sydney Harbour Attack on Sydney Harbour Submarine warfare in World War II Conflicts in 1942 Attack on Sydney Harbour Military attacks against Australia Shipwrecks of New South Wales South West Pacific theatre of World War II Attack on Sydney Harbour