(1) For the purposes of the Act the parts of the Port of Portsmouth and the land and water to which this article applies shall be a port health district and the Council shall be the port health authority for that district.
(2) This article applies to the parts of the Port of Portsmouth and the land and water which lies within the area bounded—
(a) by a line—
(i) from Ordnance Survey reference point SZ606975 (Gilkicker Point) south-south-west to Ordnance Survey reference point SZ594937 (the northerly point of the pier at Ryde), then
(ii) east to Ordnance Survey reference point SZ641938 (No Man’s Land Fort), then
(iii) north-east to Ordnance Survey reference point SZ730984 (point on the foreshore opposite the southern end of Rails Lane, Hayling Island);
(b) by the mean high water line along the coast between Ordnance Survey reference point SZ730984 (a point on the foreshore opposite the southern end of Rails Lane, Hayling Island) westwards and via Langstone Harbour to Ordnance Survey reference point SZ730043 (the north-eastern tip of Northney Marina, Hayling Island);
(c) by a line from Ordnance Survey reference point SZ730043 (the north-eastern tip of Northney Marina north-west to Ordnance Survey reference point SZ725053 (a point on the foreshore opposite the southern end of Pook Lane, Warblington);
(d) by the mean high water line between Ordnance Survey reference point SZ725053 (a point on the foreshore opposite the southern end of Pook Lane, Warblington) and Ordnance Survey reference point SZ606975 (Gilkicker Point),
together with
(aa) all docks, harbours and marinas, including the approaches to them; and
(bb) as far as the tide flows, all rivers, canals, bays, creeks, streams, channels, waters and watercourses,
giving onto the area specified in this article.