Sector Mobile's office is located in Mobile, AL. Subject to the overriding provisions of § 3.40-5, the boundaries of Sector Mobile's Marine Inspection Zone and Captain of the Port Zone start near the Florida coast at latitude 30°05′45″ N., 084°04′34″ W. proceeding northerly along the boundary between Wakulla and Jefferson counties to position 30°15′00″ N., 084°04′33″ W.; thence west to latitude 30°15′00″ N, longitude 84°45′00″ W; thence north to a point near the southern bank of the Seminole Lake at latitude 30°45′57″ N, longitude 84°45′00″ W; thence northeast along the eastern bank of the Seminole Lake and north along the eastern bank of the Flint River to latitude 32°20′00″ N, longitude 84°01′51″ W; thence northwest to the intersection of the Georgia-Alabama border at latitude 32°53′00″ N; thence north along the Georgia-Alabama border to the southern boundary of Dekalb County, AL, thence west along the northern boundaries of Cherokee, Etowah, Blount, Cullman, Winston, and Marion Counties, AL, to the Mississippi-Alabama border; thence north along the Mississippi-Alabama border to the southern boundary of Tishomingo County, MS, at the Mississippi-Tennessee border; thence west along the southern boundaries of Tishomingo and Prentiss Counties; thence north along the western boundaries of Prentiss and Alcorn Counties; thence west along the northern boundaries of Tippah, Benton, and Marshall Counties, MS; thence south and west along the eastern and southern boundaries of DeSoto, Tunica, Coahoma, Bolivar, and Washington Counties, MS; thence east along the northern boundary of Humphreys and Holmes Counties, MS; thence south along the eastern and southern boundaries of Holmes, Yazoo, Warren, Claiborne, Jefferson, Adams, and Wilkinson Counties, MS; thence east from the southernmost intersection of Wilkinson and Amite Counties, MS, to the west bank of the Pearl River; thence south along the west bank of the Pearl River to longitude 89°31′48″ W (at the mouth of the river); thence south along longitude 89°31′48″ W to latitude 30°10′00″ N; thence east along latitude 30°10′00″ N to longitude 89°10′00″ W; thence southeast to latitude 29°00′00″ N, longitude 88°00′00″ W; thence south along longitude 88°00′00″ W to the outermost extent of the EEZ; thence east along the outermost extent of the EEZ to the intersection with a line bearing 199°T from with a line bearing 199°T from 29°23′09″ N., 084°04′34″ W. to the EEZ (24°48′13″ N., 085°50′05″ W.); thence northeast to 29°23′09″ N., 084°04′34″ W.”; thence due north to the Florida coast at longitude 084°04′34″ W. (30°05′45″ N., 084°04′34″ W.).
[USCG-2006-25556, 72 FR 36322, July 2, 2007, as amended by USCG-2013-0491, 80 FR 20163, Apr. 15, 2015; USCG-2015-0433, 80 FR 44278, July 27, 2015]