Question

When navigating in restricted visibility, what action shall a PDV take?

1) When making way, sound one prolonged blast at intervals of not more than one minute
2) Have her engines ready for immediate maneuver
3) Stop her engines when hearing a fog signal forward of her beam, even if risk of collision does not exist
4) Operate at a speed to be able to stop in the distance of her visibility

Answer 1

In restricted visibility, a PDV should sound a prolonged blast at intervals of not more than one minute, keep engines ready for maneuvering, and maintain a safe speed to stop within the visible distance.

Step-by-step explanation:

Actions of a Power-Driven Vessel (PDV) in Restricted Visibility

When navigating in restricted visibility, such as fog, a PDV should take several precautions according to maritime navigation rules:

1. Sound signals: A PDV making way should sound one prolonged blast at intervals of not more than one minute to alert other vessels of its presence.
2. Engine readiness: The vessel should have her engines ready for immediate maneuver if it becomes necessary to avoid a collision.
3. Safe speed: It must operate at a safe speed that allows the vessel to stop within the distance of visibility, ensuring enough time to react to other vessels or obstacles.

Contrary to the third statement in the question, a PDV is not required to stop its engines when hearing a fog signal forward of her beam if there is no risk of collision. The primary concern is to maintain safe operations and be prepared to take action if the risk of collision exists.