17.—(1) After the completion of a tidal work the Company shall at the outer extremity thereof 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 Harwich Haven Authority and Trinity House or, failing agreement between them, Harwich Haven Authority may from time to time direct.
(2) If the Company fail to comply in any respect with any direction given under paragraph (1) they shall be guilty of an offence and liable on summary conviction to a fine not exceeding the statutory maximum and on conviction on indictment to a fine.