Navigation Rules Pro has everything in our popular Navigation Rules app plus over 100 pages of additional important reference material. Navigation Rules Pro contains a complete copy of the International Regulations for Preventing Collisions at Sea, 1972 (COLREGS), including amendments and the Inland Navigation Rules, in effect for all inland waters, including the Great Lakes plus the following information a boater needs:

* Sound and Light Signals Quick Reference
* Steering and Sailing Rules Quick Reference
* Aids to Navigation (AtoN)
* Bridge Lighting Quick Reference
* Lock Procedures
* U.S. Federal Requirements for Recreational Boats
* Communication information - DSC, Rescue 21, International Code Signals, semaphore flags, distress signals, phonetic alphabet, prowords, international morse code.
* Weather and Oceanography
* Law Enforcement
* Boating Calculators
* Unit Conversions

Navigation Rules Pro includes the COLREGs most recent version dated - July 2015.

This app includes an annotated table of contents and a search function to help the reader quickly find the rule and related references. A Favorites page allows quick access to commonly referenced pages. Use the email function to share a page with others.

If you are a boater you need to know this information.

What's New

Version 2.1.1

* Fixed bug with sharing some pages
* Added support for iPhone X screens

Ratings and Reviews

4.8 out of 5

36 Ratings
36 Ratings

Great reference

Raven Tengu

Great interface and illustrations. I keep it handy

Great app!


Very easy to use and the quick guides are so useful! You can email yourself the PDF version for a quick guide on any of the topics. I will recommend this app to anyone! All it needs to be complete is the questions (embedded with explanations for each answer).

Great app


Puts the navigation rules and other helpful tools in the palm of your hand and easily accessible. Find it very helpful with my job


Double Dog Studios
36.2 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2012-2018 Double Dog Studios, LLC
In-App Purchases
  1. Boating Calculators $0.99
  2. Unit Conversions $0.99


  • Family Sharing

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

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