Practice maritime navigation rules and buoyage systems with this app. It helps you identify knowledge gaps and track your progress in mastering essential regulations for mariners.
1.5
June 15, 2026
ROR International, Inland and IALA MBS exam practice tool, developed by a Master Mariner. Test your knowledge of the rules.
Master-Nav is used to practice and test your knowledge of USCG Navigation Rules and the IALA Maritime Buoyage System, essential regulations for mariners.
Master-Nav was developed by Peterjohn Chisholm, a Master Mariner with 30 years of seagoing experience, ensuring practical and expert-level content.
The app provides a straightforward way to assess your current knowledge, pinpoint areas needing improvement, and monitor your learning progress over time.
Currently, Master-Nav is supported on iPhones. Information regarding availability on other devices like Android or tablets is not provided.
The latest version of Master-Nav is 1.5, and it was last updated on June 15, 2026. This indicates a recent update, suggesting ongoing development.
Master-Nav has an age rating of 4+, making it suitable for a wide range of users interested in maritime education.
No, Master-Nav does not contain advertisements. It is a free app without any ad interruptions.
Master-Nav is a free application and does not offer subscription tiers. All features are available without any cost.
