Inland Navigation Rules

The US Inland Navigation Rules — 33 CFR Part 83. They mirror the international COLREGs almost verbatim with a handful of structural deviations: Inland Rule 10 covers Vessel Traffic Services rather than Traffic Separation Schemes, there is no Inland Rule 28 (constrained-by-draft is COLREGs-only), and Western-Rivers and Great-Lakes traffic gets descending-current right of way under several rules.

Studying for the Near-Coastal endorsement? See the international COLREGs directory →

Part A — General

Part B-I — Conduct in Any Visibility

Part B-II — In Sight of One Another

Part B-III — Restricted Visibility

Rule 19 · Conduct of Vessels in Restricted Visibility

Part C — Lights and Shapes

Part D — Sound and Light Signals

Part E — Exemptions

Rule 38 · Exemptions

Inland Navigation Rules — All 37 US Rules (33 CFR Part 83) · CaptainsGround