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- Q125 - Navigation Problems: Chart Plot
1. The Light List indicates that a light has a nominal range of 10 miles and is 11 feet high. If the visibility is 5 miles and your height of eye is 20 feet, at what approximate distance will you sight the light?
Visibility limits the sighting distance. The light's luminous range in 5-mile visibility is 6.3 miles, which is less than the geographic range based on height, so the light will be sighted at 6.3 miles.
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