33 CFR § 80.830 - Mississippi Passes, LA to Point Au Fer, LA.

---
identifier: "/us/cfr/t33/s80.830"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "33 CFR § 80.830 - Mississippi Passes, LA to Point Au Fer, LA."
title_number: 33
title_name: "Navigation and Navigable Waters"
section_number: "80.830"
section_name: "Mississippi Passes, LA to Point Au Fer, LA."
chapter_name: "COAST GUARD, DEPARTMENT OF HOMELAND SECURITY"
subchapter_number: "D"
subchapter_name: "INTERNATIONAL NAVIGATION RULES"
part_number: "80"
part_name: "COLREGS DEMARCATION LINES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "14 U.S.C. 102, 503; 33 U.S.C. 151(a)."
regulatory_source: "CGD 77-118a, 42 FR 35784, July 11, 1977, unless otherwise noted. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981."
cfr_part: "80"
---


# 80.830 Mississippi Passes, LA to Point Au Fer, LA.

(a) A line drawn from the seaward extremity of the Southwest Pass West Jetty located at coordinate latitude 28°54.5′ N., longitude 89°26.1′ W.; thence following the general trend of the seaward, highwater jetty and shoreline in a north, northeasterly direction to Old Tower latitude 28°58.8′ N., longitude 89°23.3′ W.; thence to westernmost point near Pass du Bois; thence to coordinate latitude 29°05.2′ N., longitude 89°24.3′ W.; thence a curved line following the general trend of the highwater shoreline to Point Au Fer Island except as otherwise described in this section.

(b) A line drawn across the seaward extremity of the Empire Waterway (Bayou Fontanelle) entrance jetties.

(c) An east-west line drawn from the westernmost extremity of Grand Terre Islands in the direction of 194° true to the Grand Isle Fishing Jetty Light.

(d) A line drawn between the seaward extremity of the Belle Pass Jetties.

(e) A line drawn from the westernmost extremity of the Timbalier Island to the easternmost extremity of Isles Dernieres.

(f) A south-north line drawn from Caillou Bay Light 13 across Caillou Boca.

(g) A line drawn 107° true from Caillou Bay Boat Landing Light across the entrances to Grand Bayou du Large and Bayou Grand Caillou.

(h) A line drawn on an axis of 103° true through Taylors Bayou Entrance Light 2 across the entrances to Jack Stout Bayou, Taylors Bayou, Pelican Pass, and Bayou de West.

[CGD 77-118a, 42 FR 35784, July 11, 1977. Redesignated by CGD 81-017, 46 FR 28154, May 26, 1981, as amended by CGD 84-091, 51 FR 7787, Mar. 6, 1986; USCG-2013-0397, 78 FR 39172, July 1, 2013]