Which rule governs the conduct of vessels in restricted visibility?

The conduct of vessels in restricted visibility is governed by Rule 19 of the COLREGs, which focuses specifically on vessels operating in such conditions. This rule requires vessels to take specific actions to avoid collisions, emphasizing the need for reduced speed, diligence, and caution due to the limited visibility that can impede the ability to see other vessels or hazards.

While Rule 35 pertains to vessels not under command and Rule 22 deals with the responsibility of vessels navigating in traffic separation schemes, they do not specifically address the conduct for vessels operating in restricted visibility. Rule 18 outlines the responsibilities of vessels in relation to one another, but it also does not directly govern actions taken during reduced visibility conditions.

Thus, the answer provided indicates a misunderstanding of which rule specifically applies to restricted visibility, and the correct guide in this situation is Rule 19, focusing on navigational prudence in limited visibility scenarios.