Subject to the following provisions of this section, where, on an application made to him for that purpose by the appropriate agency and (except where the application is made in connection with a main river) the drainage boards for every internal drainage district within which any of the waters to which that application relates are situated—
he may by order made by statutory instrument revoke, vary or amend the provisions of any local Act relating to navigation rights over any canal, river or navigable waters or to the powers and duties of the navigation authority with respect to any canal, river or navigable waters.
Without prejudice to the generality of the power conferred by subsection (1) above, an order under this section may extinguish, vary or suspend, during such period as the Minister making the order may think proper, any such rights, powers or duties as are mentioned in that subsection.
The power of each of the Ministers to make an order under this section—
An order made under this section may contain such incidental, consequential or supplemental provisions as appear to the Minister making the order to be necessary or proper for the purposes of the order.
Schedule 3 to this Act shall apply with respect to an order under this section.