(1) For the purposes of this Act, corresponding State-Territory law means a law of a State or the Northern Territory that is declared by the Commonwealth Minister, by legislative instrument, to correspond to this Act, including such a law as amended from time to time.
(2) The Commonwealth Minister may revoke a declaration under subsection (1) in relation to a law of a State or the Northern Territory only if:
(a) the Minister is requested by the State or Territory concerned to revoke the declaration; or
(b) the State or Territory law has been amended otherwise than as unanimously agreed by the members of the COAG Council under the Intergovernmental Agreement for Commercial Vessel Safety Reform; or
(c) proposed amendments of the State or Territory law have been unanimously agreed by the members of the COAG Council under the Intergovernmental Agreement for Commercial Vessel Safety Reform, and the State or Territory law has not been amended in accordance with that agreement within a reasonable period after the agreement.