Paragraph 10 Navigational lights, buoys, etcI1

The undertaker shall, at or near any tidal work, and any other work below mean high water level of which the undertaker is in possession, exhibit such lights, lay down such buoys and take such other steps for preventing danger to navigation as the Authority may from time to time reasonably require.

The Authority shall give the undertaker not less than 20 business days written notice of a requirement under paragraph 10(1) except in the case of emergency when the Authority shall give such notice as is reasonably practicable.

Without prejudice to section 133 of the 1968 Act (Lights detrimental to navigation), the undertaker shall comply with the directions of the Harbour Master from time to time with regard to the lighting on the tidal works, or the screening of such lighting, so as to ensure that it is not a hazard to navigation on the river.