Table 12: Distance of the horizon
| Height of eye: | ||
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|
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| ro | = | mean radius of earth (3440.1 nm) | |
| hf | = | height of eye (feet) | |
| βo | = | refraction factor (0.8279) | |
| D | = | distance to horizon (nm) |
| Height of eye: | ||
|
|
||
| ro | = | mean radius of earth (3440.1 nm) | |
| hf | = | height of eye (feet) | |
| βo | = | refraction factor (0.8279) | |
| D | = | distance to horizon (nm) |