(1) For the purposes of the Act, that part of the Port of Bristol together with the land and water described below 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 that part of the Port of Bristol within an area bounded by an imaginary line—
(a) commencing at Wharf Point (latitude 51 0 29’58” North longitude 2 0 43’00” West) and from then drawn in a south-westerly direction along the line of mean high-water springs to the triangulation point near Ladye Point (latitude 51 0 27’09” North - longitude 2 0 51’04” West) in the district of North Somerset, then
(b) straight in a south-westerly direction to Sand Point (latitude 51 0 23’16” North - longitude 2 0 58’48” West), then
(c) straight in a south-westerly direction to the point off Brean Down at which latitude 51 0 20’00” North intersects longitude 3 0 03’13” West, then
(d) straight in a direction just north of west to the south-eastern extremity of Steep Holme (latitude 51 0 20’16” North - longitude 3 0 , 06’09” West), then
(e) in a westerly direction along the line of mean high-water springs to the western extremity of Steep Holme (latitude 51 0 20’22” North – longitude 3 0 06’52” West), then
(f) straight in a north-easterly direction to the point at which latitude 51 0 23’29” North intersects longitude 3 0 03’34” West, then
(g) in a straight line in a north-easterly direction to the point at which latitude 51 0 26’21” North intersects longitude 2 0 59’30” West, then
(h) due north along the meridian of 2 0 59’30” West to the point at which it is intersected by latitude 51 0 27’10” North, then
(i) straight in a north-easterly direction to the Beacon on Denny Island (latitude 51 0 31’30” North - longitude 2 0 46’46” West), then
(j) straight in a north-easterly direction to the point on the coast at which the level of mean high-water springs is intersected by latitude 51 0 33’00” North, and then
(k) in a south-westerly direction along the line of mean high-water springs to Wharf Point,
together with—
(i) so much of the River Avon up to Hanham Mills as is not comprised within the area and all other rivers or parts of rivers, harbours, canals, pills and creeks within the City of Bristol;
(ii) the banks of the River Avon from its mouth up to Hanham Mills and the banks of all pills and creeks communicating directly with the said river together with a space of 4.57 metres in width on each of the banks immediately above high water mark of ordinary spring tides;
(iii) the Portishead Dock and the West Dock (commonly called the Royal Portbury Dock) and all docks and locks within or abutting;
(iv) all wharves within the City of Bristol; and
(v) the area within the gates of any dock and within the City of Bristol or the District of North Somerset.