Extreme Range

July 27, 2016 SorinMStamate No comments exist
Extreme Range
Extreme Range

Extreme Range

The Extreme Range is the maximum distance at which an object of a given height may be seen at sea.

This distance will be equal to the sum of visibility distance of the object height H [m] and distance to the visible horizon, proper to observer height h [m].

In some nautical documents, visibility distance of various objects is given for a standard observer height of 5 meters.

The visibility distance of an object can be of two kinds:

·         Distance of Geographical Visibility, and

·         Distance of Optical Visibility.

Extreme Range _ v1.0

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