The Light List indicates that a light has a nominal range of 14 miles and is 42 feet high (12.8 meters). If the visibility is 6 miles and your height of eye is 20 feet (6.1 meters), at what approximate distance will you sight the light?

Correct Answer: Option B — 10.0 miles

Luminous range (6 miles) is less than the geographic range (10.7 nm). When visibility is less than the geographic range, the distance at which the light is sighted is limited by the luminous range. Therefore, you will sight the light at approximately the visibility distance of 6 miles.