60. What is the approximate geographic range of Race Rock Light, NY, if your height of eye is 27 feet (8.2 meters)? Refer to «Reprints from the LIGHT LISTS AND COAST PILOTS».

The geographic range of Race Rock Light, NY, from an observer's height of eye of 27 feet is 15.7 nautical miles. This is calculated by summing the distance to the horizon from the observer's height and the light's focal height, which is approximately 67 feet above water. The formula used is d (nm) ≈ 1.17√h (ft), where h is the height in feet.