(a) A line drawn from latitude 3104.1 N. longitude 8116.7 W. (St. Simons Lighted Whistle Buoy ``ST S'') to latitude 3042.7 N. longitude 8119.0 W. (St. Mary's Entrance Lighted Whistle Buoy ``1''); thence to Amelia Island Light.
(b) A line drawn from the southernmost extremity of Amelia Island to latitude 3029.4 N. longitude 8122.9 W. (Nassau Sound Approach Buoy ``6A''); thence to the northeasternmost extremity of Little Talbot Island.