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COLREG 72: Rules of the Road

COLREG 72: Rules of the Road

COLREGS, USCG Exam & US Inland

123 ratings
17 reviews
#107 in paid Education
📚 Education
🗺️ Navigation
$3.99

Details

Released
June 30, 2015
Updated
November 6, 2026

Features

Developer

Smirnov Yury
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About

This app provides comprehensive study materials and practice exams for maritime collision avoidance rules. It covers both International (COLREGs) and US Inland Navigation Rules, with features like interactive quizzes, rule explanations, and timed practice tests. Ideal for preparing for maritime exams and understanding navigation regulations.

✓International and US Inland Rules side-by-side
✓Interactive navigation lights identification quizzes
✓Sound signal playback and recognition
✓Timed practice exams with detailed review
✓Rule-based tests with explanations
✓Adjustable font sizes and themes
✓Offline study capability
Show original description
+3

What's New in COLREG 72

2.9.0

November 6, 2026

Report an error Spotted a mistake in a question? Send it straight from the card, with an optional comment and email. Theory A button at the end of each section opens the next one. Lights: yellow flashing lights now flash at 120 per minute (Rule 21(f)), purse seiner lights alternate, and some light cards now explain what the vessel is showing. Text and translation fixes.

More

Charts

Top Paid

📉 107-4

Education

This app dropped -4 positions in Education chart.

Last updated on November 11, 2026.

User reviews

Most RecentHighest RatedLowest Rated

Question

How to change the language?
EExplorer515

Изменение фона

Как изменить фон с темного на белый?
MMorehod____

Response from developer

Большое спасибо, что обратились к нам с этим вопросом. Мы ценим ваше желание настроить приложение под себя. К сожалению, в текущей версии приложения функция смены темы (изменения фона с тёмного на белый и обратно) пока не реализована. Мы понимаем, насколько это важная возможность для многих пользователей, и уже рассматриваем её для добавления в будущих обновлениях. Спасибо за понимание и помощь в улучшении нашего приложения!

Неплохо, но…

Нужно добавить Английский язык в правила, будет гораздо лучше!
ААлексеℹ️

Response from developer

Уважаемый пользователь! Благодарим Вас за то, что Вы с нами. Информируем Вас, что с момента первого релиза в AppStore наше приложение имело англоязычный интерфейс. Для его активации необходимо установить английский язык в настройках Вашего устройства. Также рады сообщить, что приложение полностью переведено на испанский и французский языки.

Glitches and folders wrong

App glitches and says you’ve got thing wrong when they are right and there will be sound questions in day shapes folder etc. unsure what’s going on.
LLachland2

Response from developer

Thank you for your feedback. We’re sorry to hear about this issue. In the latest version, we’ve fixed several glitches and improved how questions are organized across sections, including sounds and day shapes. Please update the app and let us know if anything still looks incorrect.

Not a good reference

Many incorrect answers and mixed up info. Can’t trust this one for study.
WWhiskeyTF
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FAQ

What is COLREG 72?

COLREG 72 is a study and reference application for the International Regulations for Preventing Collisions at Sea (COLREGs) and the US Inland Navigation Rules. It includes features for USCG exam preparation.

Does COLREG 72 have ads?

No, COLREG 72 is ad-free. The app explicitly states 'No ads' and is available as a one-time purchase.

What maritime exams can COLREG 72 help prepare for?

COLREG 72 is built for captain's license candidates (OUPV/six-pack, Master), maritime students, merchant mariners, and yacht captains. It specifically mentions USCG exam prep with sample examinations.

Can I study COLREG 72 offline?

Yes, you can study offline anytime with COLREG 72. The app's description confirms that it supports offline study.

What is the price of COLREG 72?

COLREG 72 is a paid app with a one-time purchase price of $3.99. There is no subscription required.

What devices support COLREG 72?

COLREG 72 is supported on iPhone, iPad, and iPod devices. The layouts are tuned for both iPhone and iPad.

How does COLREG 72 help with learning the rules?

COLREG 72 links theory and rules, providing direct links to relevant rules when quiz questions are answered incorrectly or hints are used. It also tracks read sections and offers detailed mistake reviews in exam mode.

How often is COLREG 72 updated?

The latest version of COLREG 72 is 2.9.0, last updated on November 6, 2026. This indicates a recent update, suggesting ongoing support and development.