COLREG 72: Rules of the Road

COLREG 72 is a complete study and reference app for the International Regulations for Preventing Collisions at Sea, better known as the Rules of the Road. Learn navigation lights, day shapes and sound signals, then test yourself with quizzes. Built for maritime students, merchant navy officers, yacht captains, recreational boaters, and anyone preparing for a captain's license, boating license or maritime exam.

WHAT IS INCLUDED

- Flashcard System — Card-based learning tied directly to COLREG 72 paragraphs. Review each rule at your own pace and track which cards you've mastered.

- Interactive Quizzes — Test your knowledge with multiple-choice quizzes. Instant feedback, answer statistics, and progress tracking help you focus on weak areas.

- Light Placement Quizzes — Put the navigation lights on the vessel silhouette yourself: masthead, side and stern lights, special signals. 74 hands-on questions across Rules 23–30 with hints and a light-by-light review. The fastest way to remember the nav lights of power-driven vessels, sailing vessels, tugs, trawlers, pilot boats and ships at anchor.

- Theory with Explanations — Full COLREG 72 theory content broken into digestible sections. Detailed explanations make complex navigation rules easy to understand.

- Sound Signals — Audio playback for all mandatory sound signals. Learn to recognize horn sequences by ear, not just by text.

- Tablet & Phone Support — Optimized for both phones and tablets. Study comfortably on any device.

- Multi-Language — Available in English, Russian, Spanish, and French.

WHO IS THIS FOR

- Maritime students preparing for COLREG / seamanship exams
- Captain's license candidates studying the International Rules of the Road for USCG exams
- Professional navigators refreshing collision avoidance rules
- Yacht skippers, sailors and boaters learning boat lights and sound signals
- Anyone working toward an offshore or coastal qualification

FREE & PRO

The free version includes core flashcards and quizzes supported by ads. Upgrade to Pro to remove all ads and unlock the complete theory library, full quiz bank, and sound signals content.

Download COLREG 72 and start mastering the rules of the road today.

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Support: smir1986@gmail.com