North Carolina's four sections run the length of the Outer Banks — Cape Henry to Cape Hatteras (33 CFR 80.515), Hatteras to Lookout (80.520), Lookout to Cape Fear (80.525), and Cape Fear to Little River Inlet (80.530) — and they close the inlets, which makes Pamlico and Albemarle Sounds inland water. The consequence for a Hatteras, Oregon Inlet or Wanchese boat is that the change of rulebook happens at the inlet, and the inlet is the hardest part of the day: a Gulf Stream trip is on the Inland Rules in the sound and the International Rules from the moment it is through. Morehead City and Wrightsville Beach work the same way. Note that Oregon Inlet is North Carolina despite the name — 80.515 is the section that draws it, not anything in the Pacific Northwest subpart.
COLREGS Demarcation Lines covering North Carolina — 33 CFR Part 80
- 33 CFR 80.515Cape Henry, VA to Cape Hatteras, NCline drawn — Inland water inside
- 33 CFR 80.520Cape Hatteras, NC to Cape Lookout, NCline drawn — Inland water inside
- 33 CFR 80.525Cape Lookout, NC to Cape Fear, NCline drawn — Inland water inside
- 33 CFR 80.530Cape Fear, NC to Little River Inlet, NCline drawn — Inland water inside
This decides which rulebook you steer by, not where your credential may operate: the route limit is the 46 CFR Part 7 Boundary Line, and the two lines are not drawn in the same place. How the two lines differ · International Rules · Inland Rules
33 CFR Part 80 and the Part 83 definitions above read from eCFR on 12 Aug 2026. Any specific water is a determination for the cognizant Coast Guard Officer in Charge, Marine Inspection.