The area of sea below mean high water springs enclosed by a line starting at 56°45'North latitude 7°West longitude; then east to 56°45'North latitude 6°30'West longitude; then south to a point on the north coast of Coll at 56°41'North latitude 6°30'West longitude; then west, south and east along the shoreline to 56°37'19"North latitude 6°30'West longitude; then south to 56°30'North latitude 6°30'West longitude; then west to a point on the east coast of Tiree at 56°30'North latitude 6°48'2"West longitude; then north and west along the shoreline of Tiree to a point at 56°30'North latitude 6°59'West longitude; then west to 56°30'North latitude 7°West longitude; then north to the point of beginning.