This festival Social_event is a celebration Social_event of Australia 's maritime heritage Preserving , though restricts Preventing_or_letting participation by organizations with interests in modern maritime issues Creating , such as preservation Preserving of maritime law and combating Hostile_encounter poachers in the Australian Whale Sanctuary .

The Firearms ( Amendment ) Act 1988 was passed in the wake of the incident , which bans the ownership of semi-automatic centre-fire rifles and restricts the use Using of shotguns with a capacity of more than three cartridges .