All vessels
Rule Reference
Rule 24(e): a vessel being towed shall exhibit sidelights and a sternlight; when the length of the tow exceeds 200 m, a diamond shape where it can best be seen.
Top-Down View
Tap any light dot to see its COLREGS sector and rule.
In the Navitime app
This is just a fraction of what the app offers
Download Navitime free on iOS and Android for the full Advanced Navigation book collection, adaptive quizzes, flashcards, and mock exams — all fully offline.