23.—(1) The harbour master may give a direction under this article—
(a)requiring any vessel anywhere within the port or the approaches to the port to comply with a requirement made in or under a general direction;
(b)regulating the time at which and the manner in which any vessel shall enter into, go out of, or lie in or at the port;
(c)for securing that vessels move only at certain times or during certain periods;
(d)prohibiting the mooring of vessels in any particular part or parts of the port;
(e)regulating or requiring the movement, mooring or unmooring of a vessel; and
(f)regulating the manner in which a vessel takes in or discharges (from ship to shore or shore to ship) passengers, cargo, fuel, water, ship’s stores or ballast in the port.
(2) A special direction may be given in any manner considered by the harbour master to be appropriate.
(3) The harbour master may revoke or amend a special direction.