Question 269Navigation General

The correct answer is C) 12.6 miles. The calculation to determine the approximate range at which you will first sight the light is based on the formula for the geographic range of a light, which takes into account the height of the light above the water and the height of the observer's eye above the water. The formula is: Geographic Range (in nautical miles) = 2.08 * (√(height of light in feet) + √(height of observer's eye in feet)). Given the information provided: - Height of light: 28 feet (8.5 meters) - Height of observer's eye: 32 feet (9.8 meters) - Plugging these values into the formula, the geographic range is calculated as 12.6 nautical miles. The other answer choices are incorrect because: - A) 11.0 miles is the visibility distance, not the geographic range. - B) 15.7 miles is incorrect as it does not match the calculated value of 12.6 miles. - D) 18.0 miles is also incorrect, as it exceeds the calculated geographic range.