Section 27 Lights on works.
Where any part of any works authorised by a provisional order made on an application under section four of this Act or by or under section seven of this Act is situated below high-water mark of ordinary spring tides, the authority carrying out such works shall exhibit and keep burning on the works every night from sunset to sunrise such lights (if any) and take such other steps for the protection of navigation as may be from time to time required or approved during the construction, alteration or extension of the works by the Board of Trade and after the completion of the works by the Commissioners of Northern Lighthouses.