Article 3
1. The area of sea around the Orkney Islands below mean high water springs enclosed by a line extending from a point at Pierowall on the island of Westray at 59° 19'N 2° 59'W then due east to a point at 59° 19'N 2° 30'W then due south to a point on the island of Sanday at 59° 17'N 2° 30'W then west, south and east along the shoreline of Sanday to a point on the island at 59° 15.5'N 2° 30'W then due south to a point at 59° 00'N 2° 30'W then due west to a point at 59° 00'N 2° 43'W then due south to Mull Head on the mainland at 58° 58'N 2° 43'W then west and north along the shore of the mainland at Costa Head at 59° 09.5'N 3° 13'W then north and east to Noup Head on Westray at 59° 20'N 3° 04'W then east, north and west along the shoreline of Westray to the start point at Pierowall at 59° 19'N 2° 59'W.
2. The area of sea around the islands of Orkney below mean high water springs enclosed by a line extending from Tor Ness on the island of Hoy at 58° 47'N 3° 17.5'W then due south to a point at 58° 45'N 3° 17.5'W then due east to Barth Head on South Ronaldsay at 58° 45'N 2° 59'W then north and west along the shoreline of South Ronaldsay and the mainland to Breck Ness on the mainland at 58° 58'N 3° 21'W then south and west to the Kame of Hoy on Hoy at 58° 55.5'N 3° 24'W then east, south and west along the shoreline of Hoy to the start point at Tor Ness at 58° 47'N 3° 17.5'W.