Marinus: maritime rules
#85,098 of 726,542 by ratings on Apple · #4,959 of 72,982 in Education
First seen by this census 09/05/2026 — the store does not publish a creation date
Last updated 12/02/2025
Tracked since 09/05/2026
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Category: Education
Description
Not just another app for navigation rules… this is THE app for navigation rules!
Created by sailors, for sailors, Marinus COLREGs is designed to provide clear and instant answers to your questions anytime, anywhere. It's the essential app for your sailboat or motorboat.
Key Features:
• Flags – All maritime flags with their meanings.
• Meteo – Beaufort and Douglas scales, plus cloud identification.
• Sounds – Navigate safely with sound signal guidance.
• Lights – Detailed views of every vessel's navigation lights from all angles.
• Day Shapes – Learn and identify the correct day shapes for any situation.
• Maneuvers – Clear guidance on safe navigation maneuvers.
• Morse – Decode Morse signals with ease.
• Buoys (IALA) – Understand the International Buoyage System.
• Radio – Key radio communication guidelines.
• ColRegs – Full text of the International Regulations for Preventing Collisions at Sea (IRPCS).
• Quiz – Test your knowledge with interactive quizzes.
• Map – Visualize navigation concepts on an interactive map.
Access PRO Features
Unlock all PRO features with an affordable annual subscription. Your support helps us maintain and improve the app, keeping it the trusted tool for sailors around the world.
Join thousands of sailors who trust Marinus ColRegs every day on their iPhone. Whether you're an experienced seafarer or just starting your nautical journey, this is the app you’ve been looking for!
For any questions, feel free to contact us at info@marinus.es.
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Growth
Change in ratings, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.
| Per | Growth | Growth % | Actual change | Measured over |
|---|---|---|---|---|
| day | Not enough history yet | |||
| week | +1 | +0.5% | +1 | 9.7 days |
| month | Not enough history yet | |||
| year | Not enough history yet | |||
History
Tracking since 09/05/2026. History accumulates as changes are observed — check back soon.