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Old 03-10-2012
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Re: Dipping a Light

Is this another term for establish distance off a known object?

I learned these formula:

If you are working in feet:

d=1.17 x √height of object(ft) + 1.17 x √height of eye(ft)

In metres:

d=2.1 x √height of object(m) + 2.1 x √height of eye(m)

(d = distance off in nautical miles)

You have to take tides into account where they apply.
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