Question 609 Rules of the Road

90% to pass

BOTH INTERNATIONAL & INLAND You are on watch in fog. Which vessel is "in sight"?

A A vessel that you can see from the bridge
B A vessel from which you can hear the fog signal
C A radar target of which you have determined the course and speed
D All of the above
AI Explanation

The correct answer is A) A vessel that you can see from the bridge. According to the International Regulations for Preventing Collisions at Sea (COLREGS), a vessel is considered "in sight" if it can be visually observed from the bridge of the vessel on watch. Hearing a fog signal or detecting a vessel on radar does not necessarily mean the vessel is "in sight" - the vessel must be visually observed to be considered "in sight" for the purposes of the COLREGS. The other options are incorrect because B) hearing a fog signal and C) detecting a vessel on radar do not necessarily mean the vessel is "in sight" as defined by the regulations. Only option A, where the vessel is visually observed from the bridge, meets the criteria for a vessel being "in sight" under the COLREGS.

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