The area of sea below high water springs enclosed by a line starting from a point on the island of Mull at 56(30'N 5(46.5'W; then east to Rubha an Ridire on the Scottish mainland at 56(30'N 5(41.4'W; then east, north and south along the mainland coast to 55(45'N 5(34.9'W; then west to a point on the east coast of Islay at 55(45'N 6(02.8'W; then north, west and south along the Islay shore to a point on the west coast of Islay at 55(44.8'N 6(30'W; then north to 56(N 6(30'W; then east to 56(N 6(W; then north to a point on the south coast of Mull at 56(18.7'N 6(W; then east and north along the coast of Mull to the start point.

The area of sea below high water springs enclosed by a line starting from a point at 56(15'N 6(30'W; then west to 56(15'N 7(W; then north to Rubha Chraiginis on Tiree at 56(30.2'N 7(W; then east along the Tiree shore to Scarinish at 56(30'N 6(48.2'W; then east to 56(30'N 6(30'W; then south to the start point.