(a) A line drawn from the easternmost tip of Folly Island to 32°41′37″ N., 079°53′03″ W. (abandoned lighthouse tower) on the northside of Lighthouse Inlet; thence west to the shoreline of Morris Island.

(b) A line drawn from the seaward tangent of Folly Island across Stono River to the shoreline of Sandy Point.

(c) A line drawn from the southernmost extremity of Seabrook Island 257° true across the North Edisto River Entrance to the shore of Botany Bay Island.

(d) A line drawn from the microwave antenna tower on Edisto Beach charted in approximate position latitude 32°28.3′ N. longitude 80°19.2′ W. across St. Helena Sound to the abandoned lighthouse tower on Hunting Island.

(e) A line formed by the centerline of the highway bridge between Hunting Island and Fripp Island.

(f) A line drawn from the westernmost extremity of Bull Point on Capers Island to Port Royal Sound Channel Range Rear Light, latitude 32°13.7′ N., longitude 80°36.0′ W.; thence 259° true to the easternmost extremity of Hilton Head at latitude 32°13.0′ N., longitude 80°40.1′ W.