ColRegs: Rules of the Road

74 reviews
Content rating
Everyone
5K+
Downloads
Content rating
Everyone
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About this app

Learn, revise and quickly reference the boating Rules of the Road with more than 100 clear illustrations.

ColRegs: Rules of the Road helps skippers, sailors, boaters, anglers, crew and maritime professionals understand how vessels should interact, determine which vessel should give way and identify the action required to help prevent a collision.

The app covers the Steering and Sailing Rules and the Sound and Light Signals of the International Regulations for Preventing Collisions at Sea (IRPCS/ColRegs).

“…a brilliant training and reference device.”

QUICK, PRACTICAL REFERENCE
Whether you are on the water or ashore, studying in daylight or checking a rule in darkness or poor visibility, the app helps you find the relevant rule, signal, illustration and explanation in seconds.
• Quick-reference and revision tool for Navigation Rules, Sound Signals, Search and quizzes
• Search across navigation rules, signals, ColRegs and study content
• Find key sections quickly from the redesigned home screen
• Supports sailing, boating and maritime training courses
• Learn using more than 100 custom-made illustrations
• Supports classroom instruction and independent study
• Test your recall through interactive quizzes
• Visual aide-mémoire when out on the water
• Use the core reference content without an internet connection

>>> FULL APP — AD FREE | NO IN-APP PURCHASES | NO SUBSCRIPTION

WHAT'S NEW IN THIS VERSION
This major update makes ColRegs: Rules of the Road clearer, faster and easier to use.
• Save Favourites
• Reorder Favourites
• Continue from last page viewed
• Detailed search results
• Expand full rule only when you need it
• New gallery-style image viewer
• Access additional Safe Skipper online quizzes
• Share the app with friends

WHAT’S INCLUDED
1. NAVIGATION RULES
Study the Steering and Sailing Rules through easy-to-follow illustrations. Each illustration includes a concise explanation, with the relevant rule available in full for more detailed study.

2. SIGNALS
Explore Sound and Light Signals through clear illustrations. This section also includes Annex IV of the ColRegs, covering distress signals used at sea. Concise captions explain each situation, with full rule text available where appropriate.

3. COLREGS
Consult the following regulations in full:
• Steering and Sailing Rules: Rules 4–19
• Sound and Light Signals: Rules 32–37
• Annex IV: Distress Signals

4. TEST YOURSELF
Check your knowledge using multiple-choice questions featuring 28 graphic representations of the rules.
The improved offline quiz presents one question at a time and includes clearer answer feedback and score tracking. You can also access an extended selection of online boating quizzes.

DESIGNED FOR REFERENCE, LEARNING AND REVISION
A sound understanding of the ColRegs is essential for everyone who goes to sea in sailing or powered craft. Candidates preparing for Day Skipper, Boatmaster or Yachtmaster assessments can use the app to reinforce their knowledge and practise identifying vessels quickly.

ColRegs: Rules of the Road
The app has been researched and produced with accuracy and practical learning in mind. Its clear visual approach makes complex combinations of lights and shapes easier to understand and remember.

ENDORSED BY THE BOATING COMMUNITY
>>> Used by thousands of seafarers across Great Britain, the USA, Australia, France, Canada, New Zealand and more than 50 other countries.

“I liked the general feel and simplicity of the ColRegs Rules of the Road app.”
“Very easy to use, wish I’d had this when I was doing Day Skipper!”
“We run a training centre and these apps are a great aide-mémoire for our students.”
“Beautifully produced and very simple to use, a cool learning tool.”
“Good app for anyone to use, much easier than flip cards.”

OTHER APPS IN THIS SERIES
• ColRegs: NavLights and Shapes provides in-depth coverage of ColRegs Rules 20–31.
• IALA Buoys & Lights covers both IALA Maritime Buoyage Systems A and B.
Essential boating app - expert reference, learning & revision tool for seafarers
Updated on
Jul 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

61 reviews
Leo Haywood
April 16, 2023
Graphics and description of rules are good (if incomplete). Testing is hopeless. Online testing doesn't work at all, and offline just repeats a very limited test in the same order. I have bought another app instead. Pity, because this could be good, it just isn't.
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A Google user
April 6, 2020
Sounds and lights are not inside this app but another want... So.. I unestall..
14 people found this review helpful
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Fendi Mark
March 10, 2021
Online Quiz don't work at all. Don't waste your money and time
9 people found this review helpful
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What’s new

This major update makes ColRegs: Rules of the Road clearer, faster and easier to use.
• Save Favourites
• Reorder Favourites
• Continue from last page viewed
• Detailed search results
• Expand full rule only when you need it
• New gallery-style image viewer
• Access additional Safe Skipper online quizzes
• Share the app with friends