What does a flashing blue light indicate on a small motorboat during the day?

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Learn the Maritime Navigation Rules and Vessel Responsibilities for International and Inland Regulations. Assess your knowledge with multiple choice questions and detailed explanations. Prepare effectively for your maritime certification.

Multiple Choice

What does a flashing blue light indicate on a small motorboat during the day?

Explanation:
A blue flashing light identifies a vessel on official law enforcement or government patrol duties. This beacon is used to signal authority, so you should give the vessel a wide berth and follow any instructions it issues. Other types of vessels—fishing boats, sailing vessels, and tugboats—use standard navigation lights and day signals, not a blue flashing beacon, so the blue flashing light specifically indicates law enforcement activity rather than a routine vessel type.

A blue flashing light identifies a vessel on official law enforcement or government patrol duties. This beacon is used to signal authority, so you should give the vessel a wide berth and follow any instructions it issues. Other types of vessels—fishing boats, sailing vessels, and tugboats—use standard navigation lights and day signals, not a blue flashing beacon, so the blue flashing light specifically indicates law enforcement activity rather than a routine vessel type.

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