Master-Nav Downloads & RevenueMaster-Nav: IALA MBS · App Store

Master-Nav: IALA MBS makes learning the IALA Maritime Buoyage System clear, visual, and easy. Our goal is to simplify your preparation for maritime qualifications and maximise your success by teaching buoyage the way you actually use it at sea, through recognition, meaning, and correct action.


Master MBS uses interactive visuals, memory aids, and exam ready answer phrases to help you identify marks quickly and explain them correctly. Colours, shapes, topmarks, light characteristics, and chart symbols are taught together, so you build one complete mental picture rather than disconnected facts.


Start with the Learning Section to master each mark step by step, then move into the Practice Section to reinforce what you know under exam style pressure. You will train recognition from multiple angles, including lights only scenarios, daymarks, and chart presentation, with clear explanations that turn common confusion into confident understanding.


With a large bank of questions in varied formats, each supported by clean graphic answers that highlight typical mistakes, Master MBS builds retention through repeated, purposeful practice. The result is faster recall, better accuracy, and stronger oral exam delivery.


Whether you are a cadet building foundations or an experienced mariner refreshing buoyage knowledge for an assessment, Master-Nav: IALA MBS is designed to make IALA MBS feel straightforward, familiar, and practical. Learn it once, recognise it instantly, and answer it properly every time.