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IMO ConventionsOfficial source

COLREGS - Convention on the International Regulations for Preventing Collisions at Sea

COLREGS sets out the navigation rules to be followed by ships at sea to prevent collisions.

Includes rules for steering and sailing, lights and shapes, and sound and light signals.

Open the official text

Format and access

Format
Official text on the issuing body’s site
Listed
1 November 2025
Access
Free

Defined on The Maritime

The terms this document rests on, as the glossary and the dictionary define them.

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