COLREG Made Easy

Reference

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

COLREG Made Easy is a complete, offline-first reference and study tool for the International Regulations for Preventing Collisions at Sea — built for deck officers, cadets, and anyone preparing for maritime exams (MCA, USCG, STCW, and equivalent national certifications). WHAT'S INSIDE - Situations — interactive give-way and stand-on scenarios, covering crossing, overtaking, head-on, and restricted-visibility encounters - Lights & Day Shapes — visual reference for vessel identification by night and day, from both side-profile and end-on (bow/stern) viewpoints - Sound & Light Signals — every signal pattern, with offline audio playback so you can study without a connection - Full Rules Text — the complete regulations, searchable, organized by part and annex - Quiz Mode — test yourself against realistic scenarios before you sit an exam or a company assessment BUILT FOR LIFE AT SEA Every audio file and reference screen works fully offline — no signal required. Study on watch, in your cabin, or between assignments, without worrying about connectivity. FREE TO START The three most common encounter types (head-on, crossing to port, crossing to starboard) are free, permanently. Unlock the full set of situations, lights, signals, and quiz content with a single one-time purchase — no subscription, no recurring charges. WHO IT'S FOR Deck officers, cadets, and watchkeepers who need a fast, reliable reference they can trust — whether refreshing knowledge before a Flag State exam or double-checking a rule during a watch. Developed by a working Master Mariner, not adapted from a generic quiz template.

Ratings & Reviews

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What's new in 1.3.0 - 427 new exam-style questions — over 450 in Rules practice. Each one is linked to the COLREG rule it tests, and after you answer you see the rule text. - Lights practice is now free. - Exams now blend exam-style questions with the interactive lights and day-shapes questions, with no repeats in one set. - Improved accuracy of the rule text in the Rules reader. - Fixed: My stats could miss the last answer of an exam. - Fixed: Practice could get stuck on two interactive questions in a row.

Version 1.3.0

The developer, dan victor cristian, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
dan victor cristian
Size
69.4 MB
Category
Reference
Compatibility
Requires iOS 15.0 or later.
  • iPhone
    Requires iOS 15.0 or later.
  • iPad
    Requires iPadOS 15.0 or later.
  • iPod touch
    Requires iOS 15.0 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 CrewLink LLC
  • Developer Website
  • Privacy Policy

    • More by dan victor cristian

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