Inland · Rule 4
Application
TL;DR
Rules in Section I apply in any condition of visibility. This includes Rules 5–10 (look-out, safe speed, collision risk, avoidance action, narrow channels, traffic schemes).
Authoritative source
International parallel
COLREGs Rule 4 — Application →More from Part B-I — Conduct in Any Visibility
Related drills
Drill Inland Rule 4
Sign in to drill citation-backed questions on this rule with immediate feedback and the source chunk in a popover.