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Inland · Rule 4

Application

Last verified: 2026-05-16

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

Source links checked against the current public rule corpus on 2026-05-16.

International parallel

COLREGs Rule 4Application

More from Part B-I — Conduct in Any Visibility

Related drills

Drill Inland Rule 4

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Inland Rule 4: Application — USCG Captain's Exam Prep · CaptainsGround