What does a vessel need to do when it encounters conditions of restricted visibility?

When a vessel encounters conditions of restricted visibility, proceeding with caution is critical for safety. This involves being mindful of the potential hazards that may not be visible due to fog, rain, or other obstructions that limit sight. The vessel's operator must reduce speed, maintain a proper lookout using all available means, and be prepared to take necessary evasive actions.

It’s important to understand that in restricted visibility, other vessels may not be easily seen, and their movements can be unpredictable. Caution allows the operator to better assess the situation, make informed decisions, and respond appropriately if another vessel or obstacle is present.

Maintaining a steady course or increasing speed would not be prudent in such conditions, as it could increase the risk of collision. Additionally, relying solely on radar does not encompass all aspects of navigating safely in reduced visibility; visual lookout and sound signals are also important. Thus, the practice of proceeding with caution incorporates all these safety measures, making it the most responsible choice.