Marinus: maritime rules
Alejandro Education iPhoneiPadiPod touch
Marinus: maritime rules is a free Education app for iPhone and iPad by Alejandro. Rated 4.4/5 from 215 ratings. Requires iOS 13.0. Updated December 2, 2025.
- Rating
- 4.4
- 215 ratings
- Price
- Free
- on the App Store
- Size
- 113 MB
- Age 4+
- Updated
- Dec 2
- 2025 · v5.3.1
Screenshots
About Marinus: maritime rules
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 [email protected].
Ratings & reviews
4.4
215 ratings
What’s new
Version 5.3.1 · Updated December 2, 2025
New section available! SMCP (Standard Marine Communication Phrases): you can now access standard maritime phrases in English directly from the app. Other improvements: • Optimized ad system for a better user experience. • Implemented a new analytics system to keep improving the app.
App privacy
The developer, Alejandro, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Advertising Data
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Location: Coarse Location
- Identifiers: Device ID
- Usage Data: Advertising Data, Product Interaction
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising, Developer’s Advertising or Marketing, Analytics, App Functionality
Alternatives to Marinus: maritime rules
Looking for apps like Marinus: maritime rules? Here are 6 similar apps on the App Store. The highest rated is Maritime Academy: ICS Flags (4.9/5), and 4 of the 6 are free to download.
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The Nautical School ExamTutor+
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Marinus: maritime rules | 4.4 / 5 (215 ratings) | Free | December 2, 2025 | |
| Seabook Maritime | 4.5 / 5 (19) | Free | Apr 11, 2026 | Compare |
| Maritime Academy: ICS Flags | 4.9 / 5 (191) | Free | Mar 26, 2025 | Compare |
| Master-Nav | 4.8 / 5 (100) | 1.99 USD | Jun 15, 2026 | Compare |
| CES test answers 2026 | 4.8 / 5 (23) | Free | Jul 1, 2026 | Compare |
| COLREG 72: Rules of the Road | 4.8 / 5 (123) | 3.99 USD | Oct 22, 2026 | Compare |
| The Nautical School ExamTutor+ | 4.1 / 5 (25) | Free | Dec 17, 2024 | Compare |