New Zealand Nuclear Free Zone, Disarmament, and Arms Control Act 1987

When the Prime Minister is considering whether to grant approval to the entry of foreign warships into the internal waters of New Zealand, the Prime Minister shall have regard to all relevant information and advice that may be available to the Prime Minister including information and advice concerning the strategic and security interests of New Zealand.

The Prime Minister may only grant approval for the entry into the internal waters of New Zealand by foreign warships if the Prime Minister is satisfied that the warships will not be carrying any nuclear explosive device upon their entry into the internal waters of New Zealand.