New Zealand's Fisheries Act is really clear that the purpose of the Fisheries Act is sustainable use of fish and fisheries resources for economic, social, and cultural benefits. I think what we have in the “purpose” section as drafted here is simply the tool—the proper control and management of fisheries. You do that to an end. I believe the actual purpose needs to be specified here.
On May 3rd, 2018. See this statement in context.