Paragraph 20 Facilities for navigationI1

The undertaker shall not in the exercise of the powers granted by this order interfere with any marks, lights or other navigational aids in the river without the agreement of the Authority, and shall ensure that access to such aids remains available during and following construction of any tidal works.

The undertaker shall at any tidal works provide, or afford, reasonable facilities (including an electricity supply) for the Authority to provide at the undertaker’s cost, from time to time, such navigational lights, signals, radar, or other apparatus for the benefit, control and direction of navigation as the Authority may deem necessary by reason of the construction or carrying out of any tidal works, and shall ensure that access remains available to apparatus during and following construction of or carrying out of such works.