Question 324Navigation General

The correct answer is B) 19.3 nm. The geographic range of a lighthouse can be calculated using the formula: Range (in nautical miles) = 2.23 x √(height of eye in feet). With a height of eye of 40 feet, the formula yields a range of 19.3 nautical miles. The other options are incorrect because: A) 18.8 nm is too low C) 20.3 nm is too high D) 24.8 nm is significantly too high and outside the expected range for a lighthouse with a 40-foot height of eye.