The best way to learn the Nautical Rules of the Road.

NavRules provides all the questions, answers, explanations and resources to help you master the Nautical Rules of the road. For all mariners, from kayakers to ship captains.

Product Description:

Based on the International and US Inland Navigation Rules along with the published edition of the USCG database of license exam questions, this App helps you master the Navigation Rules using a practice exam driven methodology.

Using NavRules you generate practice exams where you:
• control the number of questions,
• control the scope of the questions (international vs inland),
• specify a filter (a text string that must appear in the question),
• specify the rule the questions pertain to,
• identify whether the question has been previously answered or not, or answered incorrectly or not.
This gives you control over the tests that are generated so you can focus your learning experience.

After taking an exam you can review the results to see:
• which questions were answered correctly,
• for incorrect answers the correct answer,
• the rule the question pertains to so you can understand the context of the question.

Every practice exam you take tracks your results relative the the Navigation Rules Question Pool. By browsing the Question Pool you can see your progress on understanding each rule.

For each rule NavRules reposts:
• your coverage (number of questions you have answered) and,
• your proficiency (the percentage of questions you have answered correctly).

If you want to study a rule you can link directly to the questions related to that rule and choose the answers. In this "review" mode you get immediate feedback on whether your answer is correct (but these results are not recorded and do not impact your rule coverage or proficiency).

The Flash Card mode lets you see all the diagrams used in the tests and from each of them see the questions that reference that diagram.

The included Rule Book provides:
• index to US Inland, International and Canadian Rules,
• link to all illustrations used in the Navigation Rules,
• link to all vessel lights by vessel type,
• definitions,
• demarcation lines,
• special terminology,
• distress signals
• references.

Other features include:
• over 1200 answered and referenced questions on the Navigation Rules,
• complete copy of the Navigation Rules,
• custom design your practice tests by number, filter, and type so you can focus on what you need to learn,
• rules are clearly identified as Inland and International or both,
• all practice tests results are stored until manually deleted,
• Canadian Modifications to the Navigation Rules.

What's New

Version 2.6.1

Changes to the release include:
- New feature allows you fine grained control over International/Inland questions to be included in practice exams.
- Improvements in display of questions and answers,
- Review of the question pool with a few corrections. If you think an answer is incorrect contact us, in some cases the wording of the question is tricky.
- The Rule Book, the included version of the Navigation Rules has been updated to incorporate all published changes.

Ratings and Reviews

great app - well worth the price


Short story: Great app - well worth the price. Long story - I was a little hesitant to purchase the app after the reviews about how the questions are inaccurate. Therefore, when I take tests on the app and I see something that looks odd I check the answer against the USCG test bank. I can’t speak for the last several people who have reviewed the app, but the official USCG and this test have always matched except 1 anomaly and I e-mailed the company to inquire. I got a response back immediately that they were looking into it and a day later explained that the answer had been updated in the last version of the USCG testing bank and they would incorporate that answer into their next version as well. Bottom line - questions and answers match the USCG test perfectly well, customer service is fast in case you do doubt an answer, and the app is well worth it if you have to study for an RoR test.

For the professional mariner and dedicated recreational skipper

Captain Alatriste

I found this app very useful; and so far it has been bug-free. It has all the USCG questions, and while it can present them randomly at user choice, it’s even more useful (to me, anyway) when it presents the questions as a ‘set’, because then you get a sense of the USCG’s perspective on an issue; the questions then seem to be attacking a concept from multiple angles.

What is nice is the availability of so many user options. You can practice with no record being kept, practice with scoring, and if desired, one can easily reset the scores to zero and begin again fresh.

Also included in the Reference section is a library of US and Canadian Navigation Rules, as well as a bibliography of maritime law resources.

A set of 87 flash cards are readily linked with their associated questions.

My only suggestion is to use a darker shade of the green font in the answers. The present green lacks contrast when displayed against some of the Caribbean Sea wallpaper photos.

All in all, a handy and effective way to prep for the Masters exam, or perhaps even more importantly, for the skipper who wants to know the Rules and be as professional as he or she can be.

Totally Amazing

First time mom in Virginia

Best App ever! I used this to study for my test and ended up getting a 100% on it. The question pool are literally questions from the exams. The pictures are how you would see it on the exam too. I think what was most useful was when you got a question wrong it would site the exact part in the rules book where the answer is. Absolutely worth the money. Absolutely.


Barber Creations, LLC
12.3 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2011-2017 Mintaka Innovations


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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