When navigating in restricted visibility, a power-driven vessel shall _____________.

When navigating in restricted visibility, a power-driven vessel must have her engines ready for immediate maneuver. This requirement is critical for ensuring safety on the water, as visibility limitations can lead to a heightened risk of collisions. By keeping the engines ready, the vessel can respond quickly to any unexpected situations, such as another vessel crossing its path or changes in environmental conditions.

Being prepared for immediate maneuvering allows the operator to take evasive action or steer clear of potential hazards while navigating through fog, rain, or other visibility-reducing conditions. This readiness is essential in ensuring that the vessel can adjust its speed and direction as necessary to prevent collisions, thus promoting safer navigation practices during conditions of limited visibility.