4.—(1) The area within which the Company shall exercise jurisdiction as a harbour authority and within which the powers of their Dockmaster shall be exercised shall comprise the docks, quays, land and premises at any time belonging to, or vested in, the Company or used, intended to be used or set aside for the purposes of the harbour undertaking together with so much of the harbour as lies within the area of water adjacent to those docks, quays, land and premises and which is bounded by an imaginary line parallel to and 50 metres riverward from the northern face and 2 metres riverward from the eastern and southern faces of the quays (Works Nos 1 and 2) when constructed in pursuance of the powers conferred by this Order.
(2) In case of conflict between any directions lawfully given by the Harbour Master and any directions given by the Dockmaster of the Company, the direction of the Harbour Master shall prevail.