Section 7.85 - St. Simons Island, GA to Little Talbot Island, FL(a) A line drawn from latitude 31°04.1' N. longitude 81°16.7' W. (St. Simons Lighted Whistle Buoy "ST S") to latitude 30°42.7' N. longitude 81°19.0' 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 30°29.4' N. longitude 81°22.9' W. (Nassau Sound Approach Buoy "6A"); thence to the northeasternmost extremity of Little Talbot Island.