What is the approximate geographic range of Point Judith Light, Rhode Island, if your height of eye is 62 feet (18.9 meters)? Refer to "Reprints from the LIGHT LISTS AND COAST PILOTS". (use charted range of 20 miles as nominal range)

Correct Answer: Option C — 18.6 nm

Geographic range is the sum of the distance to the horizon from the observer's height of eye (62 ft) and the light's height. Using the Light List table for a 62-foot height of eye (approx 9.6 nm) plus the light's geographic range (approx 9.0 nm) yields 18.6 nm.