The Light List shows that a navigational light has a nominal range of 17 miles and a height above water of 28 feet (8.5 meters). Your height of eye is 32 feet (9.8 meters) and the visibility is 11.0 miles. At what approximate range will you first sight the light?

Correct Answer: Option C — 12.6 miles

Geographic range is calculated as 1.17 * sqrt(28) + 1.17 * sqrt(32), equaling 6.19 + 6.62 = 12.8 nm. Since the visibility is 11.0 miles, the luminous range is the limiting factor. The light is sighted at the lesser of the two values, approximately 12.6 miles.