General Navigation USCG Question #211 (Set 7)

Which factor(s) is/are used to develop the charted information of a lighthouse?

Official USCG Answer & Rule Citation

Correct Answer: Option D — Height and intensity of the light

Charted light information is derived from the light's geographic range, determined by its height above water, and its luminous range, determined by its intensity. Per Bowditch, these two factors define the maximum distance at which a light can be seen under specific atmospheric conditions, ensuring safe navigation and identification.

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