If when standing 20 feet above the water on a ship in the ocean, how far away is the horizon? I've been told about 7 miles?
- Bill-MLv 73 months ago
Height of Eye above the Water is 20 Feet then the Horizon is 5.9 Miles.
There is a Formula: distance = 1.317 times Square Root of H
Square root of 20 = 4.4721 Times 1.317 = 5.8898 Statue Miles.
if you want Nautical Miles then use 1.144.
This formula comes from U.S. Navy H.O. Publication number 9.
American Practical Navigator.
- derframLv 73 months ago
Distance to horizon = 1.22 * √(eye height)
Where Distance in in statute miles
Eye height is in feet.
Assuming the 20 feet is eye height, then:
Distance to horizon = 1.22 * √20 = 5.46 miles.
- CarolOklaNolaLv 73 months ago
Depend on how high your eyes are above the water
. 3.1 miles for some one whose eye height 5 feet 7/9r 8 inches. 7 miles sounds correct for 20 feet..