General Navigation USCG Question #405 (Set 13)

The period of a lighted aid to navigation refers to the __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — time required for the light to complete each cycle

The period is the total time interval required for a light to complete one full cycle of changes, including all flashes, eclipses, and occultations. Per the USCG Light List, this duration is measured in seconds and serves as a primary characteristic for identifying specific aids to navigation.

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