Paragraph 10 I1

In addition to any requirement under articles 26 (lights on tidal works etc. during construction) and 28 (permanent lights on tidal works), the Harbour Authority, at or near every tidal work, and any other work of which the Harbour Authority is in possession in exercise of any of the powers conferred by this Order (being in either case a work which is below mean high water level forming part of the river), must exhibit such lights, lay down such buoys and take such other steps for preventing danger to navigation as the Conservancy Authority may from time to time reasonably require.