Why is it essential for vessels to maintain a safe speed near areas of restricted visibility?

Maintaining a safe speed near areas of restricted visibility is crucial primarily because collisions are more likely to occur when visibility is compromised for both vessels. In such conditions, the ability to detect other vessels, navigation aids, or hazards is severely diminished, increasing the risk of an accident. Additionally, operating at reduced speeds allows for better time to react to unexpected situations or obstacles that may suddenly appear in the limited visibility.

Moreover, when vessels are navigating in these areas, the increase in uncertainty regarding the position and movement of other vessels creates a need for heightened vigilance and caution. Operating at a safe speed provides the crew with the necessary time to assess the situation and respond appropriately, greatly enhancing safety on the water.

While options related to stopping quickly, fuel conservation, and compliance with regulations may be relevant in other contexts, they do not address the primary concern of preventing collisions in restricted visibility, which is the main reason for the emphasis on maintaining a safe speed in such conditions.