Article 6 Provision against danger to navigation
In case of damage to, or destruction or decay of, a tidal work or any part thereof the undertaker shall as soon as reasonably practicable—
notify A. B. Ports; and
lay down such buoys, exhibit such lights and take such other steps for preventing danger to navigation as A. B. Ports may from time to time direct.
If it appears to A. B. Ports urgently necessary to do so in order to secure the safe navigation of the river by all vessels, it may lay down such buoys and exhibit such lights and take such other steps for preventing danger to navigation as A. B. Ports may direct are reasonably necessary.
Any expenditure incurred by A. B. Ports in consequence of it exercising powers under paragraph (2) shall be recoverable from the undertaker.