Under the Great Barrier Reef Marine Park Regulations 1983 (Cth), 'reasonable use' in reg 18(4)(a) means reasonable in all the circumstances having regard to the purposes of the Act, and the decision-maker may consider the history of permitted use and the financial interests of applicants as part of the balancing exercise. The list of considerations in reg 18(4) is not exhaustive (majority view; [name withheld] dissented, holding the list was exhaustive). A use that would not have been reasonable if assessed de novo may become reasonable for a limited period where it has been conducted for years without significant ecological impact.
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