Master-Nav

Master-Nav

NAV RULES - the easy way!

92 ratings
29 reviews
$1.99

Details

  • Released
  • Updated
  • January 8, 2022
  • June 15, 2026

Features

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About

Learn maritime navigation rules with an interactive system designed for effective retention. This app breaks down complex regulations into manageable sections with visual aids and mnemonics. It revisits incorrect answers and provides instant graphical feedback, making the learning process intuitive and efficient.

Interactive learning system
Step-by-step rule guidance
Mnemonics and memory aids
Interactive visuals
Graphical feedback on answers
Practice section with progress tracking
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What's New in Master

1.50

June 15, 2026

New improved artwork and content, minor bug fixes.

User reviews

Cramming for YM costal

Seems a good way to learn. Likening the format.

Highly recommended

I’ve used this extensively while preparing for RYA Coastal Skipper theory, and found it excellent, very useful and good value. The IALA and Test apps are very good too.

Unreal

Get this for learning your colregs

Day Skipper Theory

Brilliant App for learning so much knowledge with good educational practice of retrieval and interleaving of previous info. Great for micro learning.

Excellent for studying

Relevant questions with realistic multiple choice. Imagines for lights are good quality. All positive feedback for this app, tried out 3-4 and this is the best by far for cost and effectiveness.

Developer apps

FAQ

What is Master-Nav?

Master-Nav is a learning system designed to make understanding and retaining the COLREGS (International Regulations for Preventing Collisions at Sea) easier. It uses an interactive approach with mnemonics, visuals, and targeted practice to help users learn the rules effectively.

What rules does Master-Nav cover?

The app covers COLREGS Parts A to D, which include General, Steering & Sailing, Lights & Shapes, and Sound & Light Signals. It also includes Annex IV, which covers Distress Signals. There are over 1000 questions in various formats.

How does Master-Nav help with learning?

It breaks down complex regulations into bite-sized chunks, uses mnemonics and visual aids designed for memory retention, and revisits incorrect answers until they are mastered. Incorrect answers are shown graphically alongside the correct ones for immediate clarity.

Is Master-Nav free to use?

Based on the provided information, Master-Nav is a paid application. It does not have in-app purchases or advertisements, indicating a one-time purchase model for full access.

Who is the target audience for Master-Nav?

This app is ideal for anyone who needs to learn or refresh their knowledge of the COLREGS, including Master Mariners, maritime students, professional sailors, and recreational boaters who operate in international waters.