Communication plan
65.—(1) The undertaker and the Port Authority must agree in writing (such agreement not to be unreasonably withheld or delayed) a communication plan 20 business days prior to commencement of any tidal works.
(2) All vessels associated with any tidal works must report to Bristol VTS Centre (VHF Channel 12) advising of their activities and movements when undertaking tidal works (including temporary closure of the relevant part of the river) in accordance with the communication plan agreed with the Port Authority under sub-paragraph (1).