According to the Puget Sound Harbor Safety Plan, what is the immediate action if a vessel requests permission to shut down its engine?

When a vessel requests permission to shut down its engine, it indicates a potential emergency or safety concern that requires immediate attention. The correct response, which is to obtain escort or rescue tug assistance, is critical for ensuring the safety of the vessel in distress and other vessels in the surrounding area.

Shutting down an engine can leave a vessel at the mercy of tides, currents, or wind, which increases the risk of drifting into hazardous areas or colliding with other vessels. By obtaining escort or rescue tug assistance, the safety of the vessel can be assured while minimizing risks to navigation and nearby vessels.

The other possible actions do not adequately address the urgency of the situation. Simply securing the boat and waiting for instructions may lead to a lack of proactive measures in a potentially dangerous scenario. Calling for port authorities alone may delay necessary immediate assistance, while resuming course underwater is impractical and does not apply to the situation. Thus, ensuring that escort or rescue support is on the way is the most appropriate and effective immediate action in accordance with the Puget Sound Harbor Safety Plan.