12. The harbour master may enter and inspect a vessel in the harbour, subject to producing his authority where requested—
(a)for the purposes of any enactment relating to the Council or of any byelaw of the Council, including the enforcement thereof; or
(b)to prevent or extinguish fire,
but, except in an emergency, no entry shall be made under this article without prior written notice first having been given to the owner or the person appearing to have charge of the vessel, at least 24 hours in advance; and the written notice shall have annexed to it a copy of this article.