s 27 Power of authority to order vessels to come alongside
The authority may order any sea-going vessel within the port to come alongside any suitable quay, wharf, jetty, pier or landing stage which is vested in or is under the control of the authority, for the purpose of landing or shipping goods, cargo or passengers: Provided that such order may be made only where— (a) such vessel has not commenced landing goods, cargo or passengers; or (b) such vessel is about to ship goods, cargo or passengers, but has not commenced to do so, and in making such order the authority shall have regard, as far as possible, to the convenience of such vessel and of the shippers in respect of any particular quay, wharf, jetty, pier or landing stage.