27.—(1) The Comhairle may give directions for the purpose of promoting or securing conditions conducive to the ease, convenience or safety of navigation and the safety of persons and property in the harbour and, without prejudice to the generality of the foregoing, for any of the following purposes:–
(a)for designing areas, routes or fairways in the harbour which vessels are to use or refrain from using for movement, mooring or anchorage;
(b)for securing that vessels move only at certain times or during certain periods;
(c)for securing that vessels make use of descriptions of aids to navigation specified in the direction;
(d)for prohibiting–
(i)entry into the harbour by a vessel which for any reason would be or likely to become a danger to other vessels in the harbour, or to persons, property, flora or fauna in the harbour or within the harbour premises; and
(ii)entry into or navigation within the main fairways during any temporary obstruction thereof; and
(e)requiring the master of a vessel to give to the harbour master information relating to the vessel reasonably required by the harbour master for effecting any of the purposes of this paragraph.
(2) A direction under this article may apply–
(a)to all vessels or to a class of vessels designated in the direction;
(b)to the whole of the harbour or to a part designated in the direction; or
(c)at all times or at times designated in the direction,
and every direction under this article shall specify the extent of its application in relation to the matters referred to in sub-paragraphs (a), (b) and (c) of this paragraph.
(3) The Comhairle may revoke or amend any general direction.