The area of sea below mean high water springs starting from a point at 58°45−North latitude 5°30−West longitude; then east to 58°45−North latitude 5°West longitude; then south to a point on the mainland at 58°37.38−North latitude 5°West longitude; then south along the shoreline to 58°30−North latitude 5°07.14−West longitude; then west to point 58°30−North latitude 5°30−West longitude; then north to the point of beginning.