Question 483Navigation General

70% to pass

The visible range marked on charts for lights is the _______________.

A minimum distance at which the light may be seen with infinite visibility
B minimum distance at which the light may be seen based on a 12 mile distance to visible horizon
C maximum distance at which a light may be seen in clear weather with 10 miles visibility
D maximum distance the light may be seen restricted by the height of the light and the curvature of the earth
AI Explanation

The correct answer is C) the maximum distance at which a light may be seen in clear weather with 10 miles visibility. The visible range marked on nautical charts represents the maximum distance at which a light can be seen in clear weather conditions with 10 miles of visibility. This is a standard measure used to determine the expected range of a navigational light. The other options are incorrect because they do not accurately reflect the standard definition of visible range used for charting purposes.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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