252. Determine the approximate geographic visibility of an object, with a height above the water of 85 feet (25.9 meters), for an observer with a height of eye of 60 feet (18.3 meters).

The geographic visibility is the sum of the observer's and object's horizon distances, calculated using the formula d = 1.17√h (where h is in feet). Applying this formula to the observer's eye height (60 ft) and the object's height (85 ft) yields a total visibility of approximately 19.9 nautical miles.