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Title 33

Displaying title 33, up to date as of 7/17/2026. Title 33 was last amended 7/17/2026.
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  1. Title 33 —Navigation and Navigable Waters
  2. Chapter I —Coast Guard, Department of Homeland Security
  3. Subchapter D —International Navigation Rules
  4. Part 80   View Full Text
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Title 33Navigation and Navigable WatersPart / Section
Chapter ICoast Guard, Department of Homeland Security1 – 199
Subchapter DInternational Navigation Rules80.01 – 82
Part 80COLREGS Demarcation Lines80.01 – 80.1705
General80.01
§ 80.01General basis and purpose of demarcation lines.
Atlantic Coast
USCG Northeast District80.105 – 80.165
§ 80.105Calais, ME to Cape Small, ME.
§ 80.110Casco Bay, ME.
§ 80.115Portland Head, ME to Cape Ann, MA.
§ 80.120Cape Ann, MA to Marblehead Neck, MA.
§ 80.125Marblehead Neck, MA to Nahant, MA.
§ 80.130Boston Harbor entrance.
§ 80.135Hull, MA to Race Point, MA.
§ 80.145Race Point, MA, to Watch Hill, RI.
§ 80.150Block Island, RI.
§ 80.155Watch Hill, RI to Montauk Point, NY.
§ 80.160Montauk Point, NY to Atlantic Beach, NY.
§ 80.165New York Harbor.
USCG East District80.501 – 80.530
§ 80.501Sandy Hook, NJ to Tom's River, NJ.
§ 80.502Tom's River, NJ to Cape May, NJ.
§ 80.503Delaware Bay.
§ 80.505Cape Henlopen, DE to Cape Charles, VA.
§ 80.510Chesapeake Bay Entrance, VA.
§ 80.515Cape Henry, VA to Cape Hatteras, NC.
§ 80.520Cape Hatteras, NC to Cape Lookout, NC.
§ 80.525Cape Lookout, NC to Cape Fear, NC.
§ 80.530Cape Fear, NC to Little River Inlet, NC.
USCG Southeast District80.703 – 80.735
§ 80.703Little River Inlet, SC to Cape Romain, SC.
§ 80.707Cape Romain, SC to Sullivans Island, SC.
§ 80.710Charleston Harbor, SC.
§ 80.712Morris Island, SC to Hilton Head Island, SC.
§ 80.715Savannah River.
§ 80.717Tybee Island, GA to St. Simons Island, GA.
§ 80.720St. Simons Island, GA to Amelia Island, FL.
§ 80.723Amelia Island, FL to Cape Canaveral, FL.
§ 80.727Cape Canaveral, FL to Miami Beach, FL.
§ 80.730Miami Harbor, FL.
§ 80.735Miami, FL to Long Key, FL.
Puerto Rico and Virgin Islands
USCG Southeast District80.738
§ 80.738Puerto Rico and Virgin Islands.
Gulf Coast
USCG Southeast District80.740 – 80.760
§ 80.740Long Key, FL to Cape Sable, FL.
§ 80.745Cape Sable, FL to Cape Romano, FL.
§ 80.748Cape Romano, FL to Sanibel Island, FL.
§ 80.750Sanibel Island, FL to St. Petersburg, FL.
§ 80.753St. Petersburg, FL to the Anclote, FL.
§ 80.755Anclote, FL to the Suncoast Keys, FL.
§ 80.757Suncoast Keys, FL to Horseshoe Point, FL.
§ 80.760Horseshoe Point, FL to Rock Island, FL.
USCG Heartland District80.805 – 80.850
§ 80.805Rock Island, FL to Cape San Blas, FL.
§ 80.810Cape San Blas, FL to Perdido Bay, FL.
§ 80.815Mobile Bay, AL to the Chandeleur Islands, LA.
§ 80.825Mississippi Passes, LA.
§ 80.830Mississippi Passes, LA to Point Au Fer, LA.
§ 80.835Point Au Fer, LA to Calcasieu Pass, LA.
§ 80.840Sabine Pass, TX to Galveston, TX.
§ 80.845Galveston, TX to Freeport, TX.
§ 80.850Brazos River, TX to the Rio Grande, TX.
Pacific Coast
USCG Southwest District80.1102 – 80.1152
§ 80.1102Santa Catalina Island, CA.
§ 80.1104San Diego Harbor, CA.
§ 80.1106Mission Bay, CA.
§ 80.1108Oceanside Harbor, CA.
§ 80.1110Dana Point Harbor, CA.
§ 80.1112Newport Bay, CA.
§ 80.1114San Pedro Bay—Anaheim Bay, CA.
§ 80.1116Redondo Harbor, CA.
§ 80.1118Marina Del Rey, CA.
§ 80.1120Port Hueneme, CA.
§ 80.1122Channel Islands Harbor, CA.
§ 80.1124Ventura Marina, CA.
§ 80.1126Santa Barbara Harbor, CA.
§ 80.1130San Luis Obispo Bay, CA.
§ 80.1132Estero-Morro Bay, CA.
§ 80.1134Monterey Harbor, CA.
§ 80.1136Moss Landing Harbor, CA.
§ 80.1138Santa Cruz Harbor, CA.
§ 80.1140Pillar Point Harbor, CA.
§ 80.1142San Francisco Harbor, CA.
§ 80.1144Bodega and Tomales Bay, CA.
§ 80.1146Albion River, CA.
§ 80.1148Noyo River, CA.
§ 80.1150Arcata-Humboldt Bay, CA.
§ 80.1152Crescent City Harbor, CA.
USCG Northwest District80.1305 – 80.1395
§ 80.1305Chetco River, OR.
§ 80.1310Rogue River, OR.
§ 80.1315Coquille River, OR.
§ 80.1320Coos Bay, OR.
§ 80.1325Umpqua River, OR.
§ 80.1330Siuslaw River, OR.
§ 80.1335Alsea Bay, OR.
§ 80.1340Yaquina Bay, OR.
§ 80.1345Depoe Bay, OR.
§ 80.1350Netarts Bay, OR.
§ 80.1355Tillamook Bay, OR.
§ 80.1360Nehalem River, OR.
§ 80.1365Columbia River Entrance, OR/WA.
§ 80.1370Willapa Bay, WA.
§ 80.1375Grays Harbor, WA.
§ 80.1380Quillayute River, WA.
§ 80.1385Strait of Juan de Fuca.
§ 80.1390Haro Strait and Strait of Georgia.
§ 80.1395Puget Sound and adjacent waters.
Pacific Islands
USCG Oceania District80.1410 – 80.1495
§ 80.1410Hawaiian Island Exemption from General Rule.
§ 80.1420Mamala Bay, Oahu, HI.
§ 80.1430Kaneohe Bay, Oahu, HI.
§ 80.1440Port Allen, Kauai, HI.
§ 80.1450Nawiliwili Harbor, Kauai, HI.
§ 80.1460Kahului Harbor, Maui, HI.
§ 80.1470Kawaihae Harbor, Hawaii, HI.
§ 80.1480Hilo Harbor, Hawaii, HI.
§ 80.1490Apra Harbor, U.S. Territory of Guam.
§ 80.1495U.S. Pacific Island Possessions.
Alaska
USCG Arctic District80.1705
§ 80.1705Alaska.
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