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Inland · Rule 4

Application

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).

Source: 33 CFR §83.04Last verified 2026-05-16

Rule text#

Source

Verbatim 33 CFR §83.04 as published in the Code of Federal Regulations — public domain, retrieved 2026-05-16.

Rules 4 through 10 (§§ 83.04 through 83.10) apply in any condition of visibility.

Authoritative source#

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

  • 33 CFR §83.04 — the section this text comes from, with its neighbours.
  • The Inland Navigation Rules are codified at 33 CFR Part 83 and are public domain. The international COLREGs text is published separately by the IMO.

Practice this rule#

One real exam question on this rule, cited to source. No sign-up.

According to 33 CFR §151.05, which of the following is included in the definition of 'graywater'?

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All Inland Navigation RulesRule 5 — Look-outRule 6 — Safe SpeedRule 7 — Risk of CollisionRule 8 — Action to Avoid CollisionRule 9 — Narrow ChannelsRule 10 — Traffic Separation SchemesCOLREGs Rule 4Practice Rule 5Practice Rule 6Practice Rule 7Practice: Rules of the Road
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Inland Rule 4: Application — USCG Captain's Exam Prep · CaptainsGround