One long, one short, one long, one short (International when being overtaken) means?

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Multiple Choice

One long, one short, one long, one short (International when being overtaken) means?

Explanation:
When two power-driven vessels are in a position where one might overtake the other, sound signals are used to coordinate the maneuver. The specific four-blast sequence of one long, one short, one long, one short is a message from the vessel being overtaken to indicate that the other vessel may proceed and overtake. Hearing that signal tells the overtaking vessel that overtaking is permitted, so it can continue the maneuver with caution and pass safely. This signaling is all about clear, agreed communication to prevent collision during the overtaking process.

When two power-driven vessels are in a position where one might overtake the other, sound signals are used to coordinate the maneuver. The specific four-blast sequence of one long, one short, one long, one short is a message from the vessel being overtaken to indicate that the other vessel may proceed and overtake. Hearing that signal tells the overtaking vessel that overtaking is permitted, so it can continue the maneuver with caution and pass safely. This signaling is all about clear, agreed communication to prevent collision during the overtaking process.

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