Master vs RRS Coach

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.

Master the Racing Rules of Sailing — before your next regatta. RRS Coach is the complete study companion for sailors who want to understand and confidently apply the Racing Rules of Sailing (World Sailing 2025–2028). Whether you're preparing for your first race or sharpening your knowledge before a major event, RRS Coach gives you everything you need in one app. LEARN THE RULES Browse all 72 World Sailing rules and definitions, organized by part and fully searchable. Plain-English summaries so you understand — not just memorize. US Sailing prescriptions included. SCENARIOS Work through 76 real racing scenarios — mark roundings, port/starboard crossings, tacking situations and protest cases. Each scenario includes a boat diagram and challenges you to pick the correct ruling. QUIZ 80+ questions across all categories. Filter by difficulty, World or US Sailing rules. Diagrams illustrate the trickiest right-of-way situations. DAILY CHALLENGE A new scenario every day. Build a streak and track your progress over time. FLASHCARDS Spaced repetition flashcards that focus on the rules you struggle with most. TRACK PROGRESS See your weak areas, quiz history, rules read, and scenarios solved. OFFICIAL RULEBOOK Full World Sailing PDF accessible directly in-app. RRS Coach is an educational reference tool and is not affiliated with or endorsed by World Sailing. Always refer to the official Racing Rules of Sailing for authoritative rule text. Subscription can be deactivated at the following link: https://support.apple.com/en-us/HT202039 Privacy Policy: https://gybedigital.co/privacy.html Terms of Use: https://gybedigital.co/terms.html