Question 327Navigation General

70% to pass

Under the IALA Buoyage Systems, a safe water mark may NOT _______________.

A show a quick flashing light
B display a white light
C be spherical
D be lettered
AI Explanation

The correct answer is A) show a quick flashing light. Under the IALA Buoyage System, a safe water mark is characterized by a spherical shape and a white light, but it does not display a quick flashing light. Quick flashing lights are typically associated with other types of navigational marks, such as isolated danger marks or special marks, but not safe water marks. The other options are incorrect because B) displaying a white light and C) being spherical are actually characteristics of a safe water mark, while D) being lettered is not a requirement that would prevent it from being a safe water mark.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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