Navigation Lights 3D vs Master

Application for studying night lights and daytime figures of vessels in accordance with the requirements of the COLREGs-72. The application allows you to observe the night lights of different types of vessels from different angles. Understanding of COLREG navigation lights allows you to correctly estimate vessel position, its maneuvering capabilities and to determine the nature of its work at night time and in poor visibility conditions. The application will be useful to navigators and those who prepare to become one. The app supports dark mode. We welcome comments and suggestions to our e-mail: support@appsforeach.com

Master-Nav is a progressive COLREGS learning system developed by a Master Mariner. The COLREGS are notoriously difficult to learn and retain — Master-Nav makes it significantly easier through an interactive system built around how your brain actually works. Instead of guessing through random question banks, Master-Nav guides you step by step through every rule from start to finish. Wrong answers are revisited until the rules stick — properly. Complex regulations are broken down into learnable chunks — bite-sized sections supported by mnemonics, memory aids and interactive visuals designed around how the brain actually retains information. Every incorrect answer is shown graphically alongside the correct one — immediately clear, no confusion. And with a single tap, the relevant COLREGS rule is accessible from any question at any time. Master-Nav covers COLREGS Parts A to D — General, Steering & Sailing, Lights & Shapes and Sound & Light Signals — plus Annex IV Distress Signals. Over 1000 questions in multiple formats, with a dedicated Practice Section that tracks right, wrong and unanswered so you always know where to focus. COLREGS — the easy way.