# COLREG

> Comprehensive guide to International Regulations for Preventing Collisions at Sea. (iPhone/iPad app by Oleksandr Kuzmychov.)

- Source: https://appshunter.io/ios/app/colreg/id6446209111 (this page in markdown: same URL + `.md`)
- Developer: [Oleksandr Kuzmychov](https://appshunter.io/developer/1623095994)
- Category: Navigation, Education
- Price: $0.99
- Age rating: 4+
- Requires: iOS 12.0 · 133 MB
- Languages: American English
- Released: 2023-03-31
- Data updated: 2026-09-02
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/colreg/id6446209111/reviews.md

## What is COLREG?

Introducing the Ultimate COLREG App - Your All-in-One Guide to Safe Navigation!

Set sail with confidence and master the rules of the sea like never before with our comprehensive COLREG App, now available on the App Store. Whether you're a seasoned mariner or a maritime enthusiast, this app is your essential companion for understanding and applying the International Regulations for Preventing Collisions at Sea (COLREGs).

• Ship Lights: Navigate the darkness with ease! Our app provides a detailed guide to ship lights, helping you identify vessels and their activities based on their unique light configurations.

• Daily Shapes: Decode maritime signals effortlessly! Learn about the various day shapes and their meanings, ensuring you're always prepared to interpret the intentions of other vessels.

• Sound Signals: Understand the language of the sea! Explore a comprehensive library of sound signals, so you can effectively communicate with other vessels and enhance safety on the water.

• Rules: Dive deep into the COLREGs! Access the complete set of regulations, organized for easy reference, to ensure you're always aware of your rights and responsibilities at sea.

• Flash Cards: Study on the go! Our flashcards make learning COLREGs a breeze. Test your knowledge and reinforce your understanding wherever you are.

Master the art of safe navigation and enjoy peace of mind on the open water with our COLREG App. It's the ideal companion for both novice and experienced sailors, helping you stay compliant and avoid collisions.

Don't leave your safety to chance – download our COLREG App today and gain the knowledge you need to sail with confidence. Make the smart choice for safe navigation and get started now!

Smooth sailing is just a download away. Get our COLREG App from the App Store today and embark on a journey to safer, smarter, and more enjoyable boating experiences.

## Key features

- Ship lights guide
- Day shapes meanings
- Sound signals library
- Complete COLREGs access
- Flashcards for study

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/colreg/id6446209111/reviews.md

### 1/5 — Full of Mistakes

*2025-07-07*

Within 2 minutes of using the flash cards I found many mistakes including simple pilot vessel being declared as engaged in underwater operations, or RAM with no masthead lights but showing both side lights declared as engaged in diving operations

## Frequently asked questions about COLREG

### What is COLREG?

COLREG stands for the International Regulations for Preventing Collisions at Sea. This app provides a comprehensive guide to these rules, including ship lights, day shapes, and sound signals, to ensure safe navigation on the water.

### What devices does COLREG support?

COLREG is available for iPhone and iPod devices, allowing users to access essential navigation information on the go.

### How often is COLREG updated?

The app was last updated on October 21, 2024, indicating ongoing support and potential for future enhancements to the navigation regulations and features.

### What is the age rating for COLREG?

COLREG has an age rating of 4+, making it suitable for a wide range of users interested in maritime safety and navigation rules.

### Does COLREG have ads?

No, COLREG is ad-free, providing an uninterrupted learning and reference experience for users focused on safe navigation.

### What are the key learning features in COLREG?

COLREG includes a detailed guide to ship lights, explanations of day shapes and their meanings, a library of sound signals, access to the full COLREGs, and flashcards for on-the-go study.

### What is the price of COLREG?

COLREG is a paid application, available for a one-time purchase of $0.99, offering a cost-effective way to access vital maritime navigation information.

### Can I use COLREG offline?

While not explicitly stated, the app's description focuses on providing comprehensive information and study tools, suggesting it is designed for accessible reference, likely including offline capabilities for its core content.

## Version history (last 4 releases)

### 3.0 — 2024-10-21

Redesigned with a sleek black theme for a modern and improved user experience, along with performance improvements to ensure smoother navigation throughout the app. We’ve also fixed bugs to provide a more reliable and stable experience. Enjoy the enhanced design and seamless performance as you continue mastering the COLREGs!

### 2.1 — 2023-11-07

In this version, we've diligently addressed grammar and language issues, ensuring a refined and polished user experience for our discerning users.

### 2 — 2023-04-05

Grammatical mistakes are corrected

### 1.0 — 2023-03-31

No release notes.

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## More apps by Oleksandr Kuzmychov

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All apps by Oleksandr Kuzmychov: https://appshunter.io/developer/1623095994

## Related topics

[colreg](https://appshunter.io/ios/topics/colreg)

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*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 2026-09-02.*