# HMS ColRegCards — Master IRPCS

> Master IRPCS (iPhone/iPad app by Will Downing.)

- Source: https://appshunter.io/ios/app/hms-colregcards/id6759050269 (this page in markdown: same URL + `.md`)
- Developer: [Will Downing](https://appshunter.io/developer/1864501052)
- Category: Education, Navigation
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.0 · 80 MB
- Languages: American English
- Released: 2026-03-19
- Data updated: 2026-06-17
- User reviews in markdown: https://appshunter.io/ios/app/hms-colregcards/id6759050269/reviews.md

## What is HMS ColRegCards?

Master the visual signals of the sea with HMS ColregsCards - your essential study companion for the International Regulations for Preventing Collisions at Sea (COLREGS/IRPCS).

WHAT YOU'LL LEARN
• Day Shapes - Identify vessels by their daytime signals
• Navigation Marks - Cardinal, lateral, and special buoys
• Lights on Vessels - Recognize vessels by their navigation lights at night
• Sound Signals - Learn manoeuvring and fog signals with synthesized audio playback                           

TWO LEARNING MODES
Reference Mode
Browse through beautifully illustrated flashcards. Each card builds your knowledge layer by layer - from the essential visual to real-world application. Swipe vertically through layers, horizontally between cards.                                                                                        

TEST MODE
Put your knowledge to the test with timed multiple-choice questions. Get instant feedback, retest on mistakes, and track your progress. Adaptive testing focuses on the cards you find hardest.

DESIGNED FOR MARINERS:
Perfect for recreational sailors, commercial seafarers, and anyone preparing for maritime navigation examinations. Whether you're new to the water or refreshing your knowledge, ColregsCards makes learning these crucial signals engaging and effective.

FEATURES
• Dark theme optimized for night study
• Works offline - study anywhere
• Progress tracking across devices (with free account)
• Interactive vessel light diagrams with 360° views
• Synthesized sound signals - hear real horn, bell, and gong sounds

Created by a team with over 100 years of combined Yachting and Teaching knowledge.

EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Terms of Use: https://slinkywill.github.io/colregscards-legal/terms.html
Privacy Policy: https://slinkywill.github.io/colregscards-legal/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Ad-Free Monthly | $0.99 | per month |
| Ad-Free Annual | $5.99 | per year |



## Version history (last 3 releases)

### 3.2 — 2026-04-02

- Added developer website link

### 3.1 — 2026-03-27

- Flashing yellow lights now animate on air-cushion vessel and submarine cards (120 flashes/min per COLREGS)
- All towing cards reworked to show combined tug + towee lights as seen at sea
- Pushing ahead and towing alongside are now separate cards
- Aground vessels split into 3 cards by size (under 50m, 50-100m, 100m+)
- Bird's Eye View improved with elongated vessel shape and concentric light stacking
- Ambiguity notes added to single white all-round light cards

### 3.0 — 2026-03-19

No release notes.

## More apps by Will Downing

- [Sextant Calculator](https://appshunter.io/ios/app/sextant-calculator/id6757097850)
- [Potty Dotty](https://appshunter.io/ios/app/potty-dotty/id6759102062)
- [Wordnest - A Fun Word Game](https://appshunter.io/ios/app/wordnest-a-fun-word-game/id6759271501)

All apps by Will Downing: https://appshunter.io/developer/1864501052

## Related topics

[hms colregcards](https://appshunter.io/ios/topics/hms-colregcards)

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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 2026-06-17.*