(1)Subject to the provisions of the Civil Aviation Act, 1949, any independent harbour undertaking to which the last foregoing section applies may demand and take charges in respect of any aircraft designed to float or manoeuvre on water which makes use of the undertaking.
(2)Any charges imposed by virtue of this section shall in the first instance require the approval of the Minister and shall thereafter be liable to revision under the last foregoing section.
(3)Any provision relating to charges in respect of such an aircraft as aforesaid contained in any statutory provision passed or made with respect to any particular independent harbour undertaking to which the last foregoing section applies shall cease to have effect:
Provided that any charges imposed by virtue of that provision and in force immediately before the passing of this Act shall be deemed to have been imposed by virtue of this section and to have been approved by the Minister.
(4)In section twenty-eight of the Harbours, Docks and Piers Clauses Act, 1847 (which relates to the exemption of certain vessels from harbour rates) as incorporated with any statutory provision, the expression " vessel" shall be deemed to include any such aircraft as aforesaid on the surface of the water.