Rules of the road
COLREG 72 Practice
Free short quizzes for navigation lights, sound signals, and rules-of-the-road exam prep.
Mobile trainer
A complete COLREG practice app in your pocket
Study navigation lights, sound signals, give-way situations, and rule references with focused drills built for quick repetition.
Visual drills
Train recognition with vessel lights, shapes, and exam-style situations.
Rule-focused practice
Move from quick web checks into structured COLREG revision in the app.
Fast repetition
Short sessions make it easy to review weak topics before an exam or watch.
Full trainer
Continue full practice in the app
Use the free web quiz for a quick check, then move to the app for the complete practice flow.
