What is the whistle signal for a vessel operating astern propulsion?

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Multiple Choice

What is the whistle signal for a vessel operating astern propulsion?

Explanation:
Three short blasts indicate that the vessel is operating astern propulsion. This signal warns others that you are backing up and may have limited maneuverability, so they can adjust course or speed accordingly to avoid a collision. It’s one of the standard maneuvering signals used under the collision regulations to communicate actions at sea. The other blast patterns are used for different maneuvers, so they don’t apply to backing down.

Three short blasts indicate that the vessel is operating astern propulsion. This signal warns others that you are backing up and may have limited maneuverability, so they can adjust course or speed accordingly to avoid a collision. It’s one of the standard maneuvering signals used under the collision regulations to communicate actions at sea. The other blast patterns are used for different maneuvers, so they don’t apply to backing down.

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