---
kind: "unit"
title: "33"
title_heading: "Navigation and Navigable Waters"
key: "chI/subchD"
level: "subchap"
label: "Subchapter D"
heading: "International Navigation Rules"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/33/chI-subchD"
sections_count: 117
---

# Subchapter D — International Navigation Rules

Title 33 C.F.R. — Navigation and Navigable Waters › Chapter I — Coast Guard, Department of Homeland Security

## Contents

- [Part ECFR1a48483536b7c15 — Special Note—Application of the 72 COLREGS to territories and possessions.](/cfr/33/chI-subchD-partECFR1a48483536b7c15.md)
- [Part 80 — Colregs Demarcation Lines](/cfr/33/chI-subchD-part80.md)
- [Part 81 — 72 Colregs: Implementing Rules](/cfr/33/chI-subchD-part81.md)
- [Part 82 — 72 Colregs: Interpretative Rules](/cfr/33/chI-subchD-part82.md)