Master-Nav: Colregs is an education app developed by NAB DEV.
Download Statistics
Master-Nav: Colregs has been downloaded 33 thousand times. In the last 30 days, the app was downloaded 630 times.
User Ratings
Master-Nav: Colregs is rated 4.52 out of 5 stars. The rating is based on 290 ratings.
App Information
Master-Nav: Colregs is FREE to download. The APK download size is 49.80 MB. The latest version available is M_N 5.7. The last update was on August 3, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play June 2023.
Description
Master-Nav is a progressive COLREGS learning system developed by a Master Mariner. The Navigation Rules are notoriously difficult to learn and retain — Master-Nav makes it significantly easier through an interactive system built around how your brain actually works.
Instead of guessing through random question banks, Master-Nav guides you step by step through every rule from start to finish. Wrong answers are revisited until the rules stick — properly.
Complex regulations are broken down into learnable chunks — bite-sized sections supported by mnemonics, memory aids and interactive visuals designed around how the brain actually retains information.
Every incorrect answer is shown graphically alongside the correct one — immediately clear, no confusion. And with a single tap, the relevant COLREGS rule is accessible from any question at any time.
Master-Nav covers COLREGS Parts A to D — General, Steering & Sailing, Lights & Shapes and Sound & Light Signals — plus Annex IV Distress Signals. Over 1000 questions in multiple formats, with a dedicated Practice Section that tracks right, wrong and unanswered so you always know where to focus.
COLREGS — the easy way.
Recent changes: Improved compatibility with the latest Android version, plus minor display fixes.
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Studying for my MCA oral, this app really helped with COLREGS. Really liked the questions, very interactive, with answers to show where you went wrong
★★★★★Anil Pandey· Apr 1, 2024
Hands down the best way to learn the COLREGs, tried quite a few apps, this was the best by far, unlike most that just regurgitate the rules, this app actually helps you to memorize the rules with good illustrated explanations and plenty of interactive questions.
★★★★★Melvun· Jul 9, 2023
Excellent app for professional mariners. Really helpful for learning the Colregs.
★★★★☆Jean-Paul da Conceicao· Feb 22, 2025
Great app but I would say one weakness is the mnemonics. Mnemonics should be short and memorable, and optional. These are often long and arbitrary, they don't help me memorize things at all. The interface when being tested on them is tedious as well, seems to have problems with my samsung's keyboard app. But other than that useful app for a fair price, thanks!
★☆☆☆☆Alex Massie· Jan 30, 2024
Seemed like a useful app but the premium upgrade doesn't work. Charged me three times and the upgrade didn't even go through.
Google Play Rankings for Master-Nav: Colregs
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Technologies used by Master-Nav: Colregs
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