What does the term 'restricted visibility' refer to under the Rules?

What does the term 'restricted visibility' refer to under the Rules?

• A. In restricted visibility, visibility is restricted by fog only
• B. Restricted visibility means visibility is reduced to less than a mile
• C. Restricted visibility refers to any condition where visibility is restricted
• D. Restricted visibility only occurs at night

Answer: (C)

Restricted visibility means any condition where visibility is restricted. This includes fog, rain, snow, smoke, haze, dust, or any other factor that limits how far you can see, and it can occur during the day or at night. It isn’t limited to fog, nor to a specific distance like a certain minimum or one mile, nor to nighttime only. Because the term covers all situations that reduce visibility, it’s the best description of the concept. In such conditions, vessels must proceed with a safe speed, keep a proper lookout, use radar if available, and follow the applicable rules to avoid collisions.

Restricted visibility means any condition where visibility is restricted. This includes fog, rain, snow, smoke, haze, dust, or any other factor that limits how far you can see, and it can occur during the day or at night. It isn’t limited to fog, nor to a specific distance like a certain minimum or one mile, nor to nighttime only. Because the term covers all situations that reduce visibility, it’s the best description of the concept. In such conditions, vessels must proceed with a safe speed, keep a proper lookout, use radar if available, and follow the applicable rules to avoid collisions.