iPhone app Navigation Rules Pro download it using MyAndroid.

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 - June 28th, 2019.

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.,

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