The area of sea around the islands of Orkney below mean high water springs enclosed by a line extending from Neban Point on the mainland of Orkney at 59° 00' North latitude and 3° 21.9' West longitude; then west to a point at 59° 00' North latitude and 3° 30' West longitude; then north to a point at 59° 15' North latitude and 3° 30' West longitude; then east to a point on the west coast of Westray at 59° 15' North latitude and 2° 52.5' West longitude; then south east and north along the shoreline of Westray to a point on the east coast at 59° 15' North latitude and 2° 50.1' West longitude; then east to a point on the west coast of Sanday at 59° 15' North latitude and 2° 38.3' West longitude; then south, east and north along the shoreline of Sanday to a point on its east coast at 59° 15.4' North latitude and 2° 30' West longitude; then south to a point at 59° 00' North latitude and 2° 30' West longitude; then west to the bay of Meil on the mainland of Orkney at 59° 00' North latitude and 2° 54.4' West longitude; then west and north along the shoreline of the mainland of Orkney to the point of beginning.