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COLREG 72 is a complete study and reference app for the International Regulations for Preventing Collisions at Sea (COLREGs). Built for maritime students, merchant navy officers, yacht captains, and anyone preparing for a maritime exam.
WHAT IS INCLUDED
- Full text of all 72 COLREG rules (Annexes I through IV)
- Theory study with illustrations
- Navigation lights identification quizzes
- Light placement quizzes — put the lights on the vessel silhouette yourself (74 questions, Rules 23–30)
- Rule-based tests with answer explanations
- Exam mode — a timed mock exam across all the rules with a final score and a full mistake review
- Cross-references between rules and theory — open in popup overlays so you never lose your place
HOW IT WORKS
Theory and rules are linked throughout the app. When you answer a quiz question incorrectly or open a hint, a direct link appears to the exact theory section that covers the topic. Review the rule, then return to the quiz.
The app tracks which theory sections you have read, so you always know where you left off and what still needs attention.
EXAM MODE
Simulate the real test. The exam is timed and draws questions from across all the rules. When time runs out, you get a clean result screen with your score and every mistake listed. Tap a wrong answer to see the explanation, the original comment from the question card, and a direct link to the relevant rule — so every attempt teaches you something.
READING
Reading is fully customizable: choose from multiple font types, adjust the font size, and switch between three color themes — light, sepia, and dark — for comfortable study in any lighting condition. Layouts are tuned for both iPhone and iPad.
WHO IT IS FOR
- Maritime students at nautical colleges and academies
- Merchant navy officers preparing for OOW, Chief Mate, or Master exams
- Yacht skippers and RYA / ASA candidates
- Coastal and offshore sailors who need a reliable collision avoidance reference
- Anyone sitting a maritime authority exam (MCA, USCG, AMSA, Transport Canada, MNI)
WHY COLREG 72
International collision avoidance rules are the foundation of safe navigation. Whether you are studying for the first time or refreshing knowledge before an exam, this app gives you the full text, visual aids, practice tests, and a realistic exam mode to build true confidence.
One-time purchase. No subscription. No ads. Study offline, anytime.
Download COLREG 72 and arrive at your exam prepared.
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COLREG 72: Rules of the Road van Smirnov Yury is een app voor iPhone, iPad en iPod touch met iOS versie 15.0 of hoger, geschikt bevonden voor gebruikers met leeftijden vanaf 4 jaar.
Informatie voor COLREG 72: Rules of the Roadis het laatst vergeleken op 21 Oct om 23:09.
Light Placement Quizzes
A new question type: put the navigation lights on the vessel silhouette yourself — masthead, side and stern lights, special signals. 74 questions across Rules 23–30, with hints, a light-by-light review and a direct link to the rule.
Learn Annex I the practical way: where each light goes, not just what it means.
