In fog, what defines a vessel as being 'in sight'?

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Study for the Maritime Navigation Rules and Vessel Responsibilities Exam. Study with multiple choice questions including hints and explanations. Prepare effectively for your exam with us!

Multiple Choice

In fog, what defines a vessel as being 'in sight'?

Explanation:
Being "in sight" means you can visually see the other vessel. In fog, this is the only way to count a vessel as in sight—the other vessel must be visible to the eye from your bridge (even with binoculars). Radar displays, AIS information, or hearing a vessel on VHF do not make it "in sight" because they are not visual perceptions. This distinction matters because the collision avoidance rules treat a vessel as in sight only when you actually can see it, and your required actions depend on that visual contact.

Being "in sight" means you can visually see the other vessel. In fog, this is the only way to count a vessel as in sight—the other vessel must be visible to the eye from your bridge (even with binoculars). Radar displays, AIS information, or hearing a vessel on VHF do not make it "in sight" because they are not visual perceptions. This distinction matters because the collision avoidance rules treat a vessel as in sight only when you actually can see it, and your required actions depend on that visual contact.

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