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post #5 of Old 03-10-2012
flyingwelshman
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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.

1989 Hunter 30'
Southern Georgian Bay

The sea, once it casts its spell, holds one in its net of wonder forever. - Jacques Yves Cousteau
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