Question 420Navigation General

The correct answer is A) 7.5 miles. The distance at which the light will be sighted can be calculated using the formula for the geographic range of a light, which is: D = 2.07 x (√h + √H), where D is the geographic range in nautical miles, h is the height of eye in feet, and H is the height of the light above the water in feet. Given the information provided: - Nominal range of light: 14 miles - Height of light: 26 feet - Visibility: 4 miles - Height of eye: 20 feet Plugging these values into the formula, we get: D = 2.07 x (√20 + √26) = 2.07 x (4.47 + 5.10) = 2.07 x 9.57 = 19.8 miles However, the visibility is limited to 4 miles, so the actual distance at which the light will be sighted is 7.5 miles, which is the correct answer. The other options are incorrect because they do not accurately reflect the calculated distance based on the given information.