251. The Light List shows that a navigational light has a nominal range of 22 miles and a height above water of 48 feet (14.6 meters). Your height of eye is 35 feet (10.7 meters) and the visibility is 20.0 miles. At what approximate range will you first sight the light?

The light will first be sighted at a range limited by the Earth's curvature, calculated as approximately 14.7 nautical miles. This is because the light's luminous range, which would be greater than its nominal range of 22 nautical miles due to the visibility exceeding the standard visibility used to determine the nominal range, is superseded by the geometry-limited geographic range.