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I agree with your description. It's just that the last time my sale
boat was at 12 knots was in a hurricain and the sky and horizons where
not visable ; )

Thomas A. Sult, MD
Sent from iPhone

On Feb 16, 2010, at 14:56, Gary LaPook  wrote:

> That's may be true in many cases but not in all cases. On a ship
> traveling at twelve knots, if it takes just four minutes between the
> first and last sight then the first LOP needs to be advanced two NM,
> not a trivial amount and a number that exceeds the likely errors in
> the sights.
>
> I should also point out that the mathematical method of advancing an
> LOP is not limited to just the short period of time needed for a
> round of sights but is also a very accurate way to advance an LOP
> for the usual running fix. It produces the same advanced LOP as the
> more common plotting method.
>
> gl
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