Maritime Master COLREGs

Maritime Master COLREGs turns the International Regulations for Preventing Collisions at Sea, also known as the COLREGs or the rules of the road, into something you can actually enjoy studying. Every rule is broken down into plain English, backed by the convention wording, and reinforced with interactive tools and quizzes.

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Whether you are sitting a written paper, preparing for orals, or just want to be the most switched-on person in the cockpit, the app gives you a structured route through all thirty eight rules and the annexes.

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Every Rule, Explained Properly

Work through Rules 1 to 38 and Annexes I to IV, organised into clear sections covering situation awareness, channels and traffic, conduct of vessels, lights and shapes, and exemptions. Nothing is skipped, from lookout and safe speed to responsibilities between vessels and distress signals.

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Each rule pairs a plain English summary with the rule wording itself, and flip cards distil the key takeaways so the essentials stick. You always learn what the rule says and what it actually means in practice.

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Interactive Learning

Risk of collision cards, traffic separation scheme breakdowns, and scenario diagrams show how each rule plays out on the water, while knowledge checks embedded throughout keep you honest as you go.

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Lights and Shapes at a Glance

A dedicated night lights view renders the light and day shape patterns for Rules 23 to 31, so you can connect what a vessel shows with the rule that requires it, all without leaving the app.

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Study Anywhere

Search across all the rules, switch languages in-app, and share clean, watermarked captures of any rule page straight into your study notes or group chat. Everything works offline with no account and no tracking.

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Who It Is For

Ideal for OOW and deck exam candidates, yacht and day skipper students, fishermen, and instructors who want a clean teaching reference. For training and study only; always refer to official publications for real-world navigation.

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Part of the Maritime Master Family

Pair it with Maritime Master Nav Lights to drill the lights in 3D, Maritime Master Radar to apply the rules on a simulated radar, and Maritime Master OOW for the wider watchkeeping syllabus.

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Frequently Asked Questions

Does it cover all the rules? Yes. All thirty eight rules plus Annexes I to IV are included, each with a summary, key takeaways, and the rule wording for study.

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Is it good for oral exam preparation? Yes. The plain English summaries and scenario diagrams are built around the way rules come up in orals, and the quizzes expose weak spots before an examiner does.

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Does it work offline? Completely. There is no account, no tracking, and nothing to sign up for, so you can revise at sea or in the air.

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Get Maritime Master COLREGs on the App Store for iPhone and iPad and know the rules of the road inside out.