# Master-Nav: IALA MBS — IALA MBS - The easy way! > Learn and master the IALA Maritime Buoyage System with interactive visuals and practice. (iPhone/iPad app by Peterjohn Chisholm.) - Source: https://appshunter.io/ios/app/master-nav-iala-mbs/id6757947717 (this page in markdown: same URL + `.md`) - Developer: [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) - Category: Education, Reference - Price: $0.99 - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 17.6 · 219 MB - Languages: American English - Released: 2026-01-19 - Data updated: 2026-08-27 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/master-nav-iala-mbs/id6757947717/reviews.md ## What is Master? 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. ## Key features - Interactive visuals - Memory aids - Exam-ready answer phrases - Step-by-step learning - Exam-style practice - Recognition training - Chart symbol teaching ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/master-nav-iala-mbs/id6757947717/reviews.md ### 5/5 — Great Content *2026-01-21* Great content - easy to follow and understand ### 5/5 — Fantastic resource *2026-01-21* Really useful IALA revision app. Clear explanations, realistic practice questions, and the buoyage lights and marks are easy to learn quickly. Simple to use and genuinely helpful for exam prep. Highly recommend. ## Frequently asked questions about Master ### What is Master-Nav: IALA MBS? Master-Nav: IALA MBS is an educational app designed to teach the IALA Maritime Buoyage System. It uses interactive visuals, memory aids, and practice exercises to help users understand and recall buoyage information for maritime qualifications. ### How does Master-Nav: IALA MBS teach buoyage? The app teaches buoyage by combining colors, shapes, topmarks, light characteristics, and chart symbols into a complete mental picture. It offers a step-by-step learning section and practice sections that simulate exam conditions. ### Is Master-Nav: IALA MBS suitable for beginners and experienced mariners? Yes, Master-Nav: IALA MBS is designed for both cadets building foundational knowledge and experienced mariners refreshing their buoyage understanding for assessments. It aims to make the system straightforward and practical for all levels. ### What kind of practice does Master-Nav: IALA MBS offer? The app provides a large bank of questions in varied formats, including lights-only scenarios, daymarks, and chart presentations. Answers are supported by clear graphics that highlight common mistakes, reinforcing retention. ### What is the price of Master-Nav: IALA MBS? Master-Nav: IALA MBS is a paid application, priced at $0.99. This one-time purchase grants access to all its learning and practice features. ### What devices does Master-Nav: IALA MBS support? Currently, Master-Nav: IALA MBS is supported on iPhone devices. Future platform expansions may be considered based on user demand and development resources. ### How often is Master-Nav: IALA MBS updated? The app was last updated on January 26, 2026, with version 1.1. Updates typically focus on refining content, improving user experience, and ensuring accuracy of the maritime information presented. ### Does Master-Nav: IALA MBS have ads? No, Master-Nav: IALA MBS does not contain advertisements. As a paid application, it offers an uninterrupted learning experience without any ad interruptions. ## Version history (last 3 releases) ### 1.2 — 2026-07-31 Fixed several buoyage terminology and spelling errors in the learning content, and small bug fixes. ### 1.1 — 2026-01-26 Interface improvements and bug fixes. Updated layout for better readability, with smoother interactions and overall performance tweaks. ### 1.0 — 2026-01-20 No release notes. ## More apps by Peterjohn Chisholm - [Master-Nav](https://appshunter.io/ios/app/master-nav/id1602390396) - [Master-Nav: COLREGS IALA Tests](https://appshunter.io/ios/app/master-nav-colregs-iala-tests/id6758554000) All apps by Peterjohn Chisholm: https://appshunter.io/developer/1602390398 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*