Which statement concerning maneuvering in restricted visibility is FALSE?

The statement regarding a vessel that hears a fog signal forward of her beam and is instructed to stop her engines is inaccurate. In the context of maneuvering in restricted visibility, particularly in fog, the primary concern is to maintain control of the vessel while being cautious of nearby obstacles or other vessels.

While it is essential to reduce speed and navigate cautiously upon hearing fog signals, simply stopping engines is not a blanket requirement and could pose risks, such as losing maneuverability and the ability to respond to changing situations. Instead, vessels are typically advised to maintain a speed that allows them to maneuver safely, which might involve reduced speed rather than a complete stop. This enables the operator to take appropriate actions if another vessel approaches or if conditions change.

In maneuvering situations, prioritizing control and having the ability to respond to potential collisions is crucial, hence the proper guidance is to navigate with caution and keep the engines ready for immediate action when necessary. This ensures safety in densely trafficked waters or when visibility is significantly impaired.