#1 Keyword Rankings
Top 10 Rankings
Top 30 Rankings
Top 100 Rankings


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.
Hide.. Show more..


User Rating

4.13 out of 5

15 ratings in United States

5 star
4 star
3 star
2 star
1 star

Ratings History


Not worth $14.99

MarcoPolo 1175 on

This app is ok if it were free but at $14.99 it’s littered with wrong answers and bugs. For example it changes answers. I thought I was losing my mind as I went over my completed graded tests and I was getting questions wrong I absolutely knew the answers to so I started to write all my answers down too. This proved my point. 2 to as many as 7 answers changes per test.

Don’t waste your money.

nickhulsman on

Doesn’t show pictures when asking questions about lights or day shapes. There is 0 context. Want a refund.

Very good but needs improvement

Moises_20 on

Very good and useful app to study for dwo but there’s about more than a handful of questions that the answer wrong. It needs to be fixed


Salexis42 on

So helpful for all members of the bridge team.

App is great but theres a fatal error

Goalieace93 on

When attempting to delete prior test records the app crashes. I can’t figure out how to report this to the developer

There is no substitute! Best tool for studying ROTR!

Tate3441 on

I am a US Navy Captain Surface Warfare Officer (SWO) who continues to expand my knowledge as a professional mariner with this and other tools from the pros at Starpath. This intuitive product is easy to use and fully up to date with the latest version of the new Nav Rules and Regulations Handbook (supercedes COMDTINST M16672.2D). A couple of features that are invaluable: the "filter" function lets you filter out portions of the test bank by keyword, e.g., if your course won't test you on Western Rivers, you can filter sample questions for the word "western". Also, after taking several practice tests over time, you can filter the next test to only give you questions that you missed on previous attempts. I had one question in which I thought the test database was incorrect. I used the "helpdesk" email and received a response from the head of Starpath, Dr. Burch himself, who tactfully showed me that the error was mine, pointing me to the specific page in the new rule book where i had overlooked the answer! The full app is a great resource for any Navy or Merchant Mariner to keep up the critical skills that are fundamental to our professions. BZ to Starpath!

Not worth it

Failed2x on

Get the Upgrade App rather than this one. Upgrade is laid out more like an exam and has less incorrect answers. This is also only the rules of the the road as other apps have all sections to take.

great app - well worth the price

atomde85 on

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.

Great app... But some answers are wrong

Rina Suelto on

Would be 5 stars... But for an app that claims to help you get ready for the Rules of the Road test, some wrong answers are just not acceptable. Most of the wrong answers I found were in the lights section. Good app to help you get a feel for the test, but very unreliable to actually get you to PASS.


Grrrr999999 on

Not all the answers are correct which defeats the purpose!!!!!

Store Rankings

Ranking History

App Ranking History not available yet

Category Rankings

Top Paid
Top Paid
Top Paid
Top Paid
Top Paid


Users may also like

Nautical Charts & Maps
Nautical Charts & Marine Maps
Anchor Captain
Earn money captaining charters
CWTSato To Go
iSailGPS : NOAA USA RNC Charts
Marine Nautical Chart Plotter
Boat Beacon
AIS Marine Navigation
Bridge Schedule
Daily Bridge Closure Info.
Stroll Intl.
Premiere ride-hailing service
Rule Master
Rules of the Road Toolbox
U.S. Inland Navigational Rules
Inland Waterways & Great Lakes
Coastal Explorer
Cruise planning and navigation
Show More

Revenue and Downloads

Gain valuable insights into NavRules performance with our analytics. Sign up now to access downloads, revenue, and more.

App Info

Recent version
2.7 (5 years ago )
Released on
Mar 7, 2011 (13 years ago )
Last updated
20 hours ago