Subsections (2) and (3) of section 16 of the [1968 c. 41.] Countryside Act 1968 (which enable access agreements and access orders to be made under Part V of the [1949 c. 97.] National Parks and Access to the Countryside Act 1949 in respect of canals and of certain land held therewith) shall apply as respects, and as respects land held with, any canal or part of a canal owned or managed by the Waterways Board which is not for the time being a commercial waterway or a cruising waterway ; and accordingly in subsection (6)(c) of that section (which prevents the said subsections (2) and (3) from applying where the canal or part of a canal is owned or managed by the Board) there shall be added at the end the words " which is for the time being a commercial waterway or a cruising waterway within the meaning of section 104 of the Transport Act 1968 ".