Under both the International and Inland Rules, a look-out is required ______.

A. only when other vessels are in sight
B. only in restricted visibility
C. only when navigating in confined waters
✓ in all conditions of visibilityCorrect

Why D is correct

The look-out rule contains no limitation on visibility or water type; it applies at all times. The phrase 'at all times' is explicit in both COLREGs Rule 5 and 33 CFR §83.05.

Cited:COLREGs Rule 5 33 CFR §83.05

More Rule 5 — Look-out questions

Rule 5 requires a proper look-out to be maintained by which of the following means?
The stated purpose of maintaining a proper look-out under Rule 5 is to accomplish which of the following?
Rule 5 (Look-out) falls within which group of Inland Navigation Rules, and what is the significance of that…
Rule 5 requires a proper look-out to be maintained by which means?
Rule 5 applies in which conditions of visibility?
A vessel restricted in her ability to maneuver is at anchor in restricted visibility. Under Rule 35, what f…

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Under both the International and Inland Rules, a look-out is requir… — USCG Exam Practice · CaptainsGround