20.—(1) After the completion of a tidal work the Agency must at its outer extremity exhibit every night from sunset to sunrise such lights, if any, and take such other steps, if any, for the prevention of danger to navigation as Trinity House and A.B. Ports or (failing agreement between them) Trinity House may from time to time direct.
(2) If the Agency fails to comply in any respect with a direction reasonably given under this article, it is guilty of an offence and liable on summary conviction to a fine not exceeding level 3 on the standard scale.