17.—(1) After the completion of a tidal work, the Commissioners shall at the outer extremity thereof exhibit every night from sunset to sunrise such lights, if any, and take such other steps for the prevention of danger to navigation as Trinity House shall from time to time direct.
(2) Subject to the provisions of article 18 of this Order, if the Commissioners fail to comply in any respect with a direction given under this article they shall be guilty of an offence and liable on summary conviction to a fine not exceeding two thousand pounds and on conviction on indictment to a fine.