The Light List shows that a navigational light has a nominal range of 18 miles and a height above water of 22 feet (6.7 meters). Your height of eye is 16 feet (4.9 meters) and the visibility is 2.0 miles. At which approximate range will you first sight the light?

Correct Answer: Option D — 5.8 miles

Geographic range is 10.2 miles based on height of eye and light height. However, the luminous range diagram in the USCG Light List shows that a light with an 18-mile nominal range is visible at approximately 5.8 miles when meteorological visibility is 2.0 miles.