21. Section 86 (Powers with respect to disposal of wrecks) of the Portsmouth Corporation Act 1959(1) as having effect in accordance with Article 21 of the Portsmouth Mile End Quay Revision Order of 1966(2), Article 21 of the Portsmouth Mile End Quay Revision Order 1973(3) and Article 15 of the Portsmouth Mile End Quay Revision Order 1988(4) shall have effect as if the references to any approach to the Flathouse Wharf and Quay in subsections (1) and (7) of that section included a reference to any approach to the authorised works.