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Another way is to use Traverse Sailing. See Bowditch for details, but
the basic idea is to keep track of each leg travelled (speed, time, and
course), resolve each leg into its N-S and E-W components, then add up
all the N-S and E-W components (netting them out as appropriate) to
figure the course and distance made good. All of this is done without
plotting. Tables are available, or you can use a calculator and some
trig. When you are done, you plot the course and distance made good, and
use that to advance your LOP.

Chuck Taylor
Everett, WA, USA

J. Florey wrote:
>
> There is a slightly easier plotting solution.  Simply draw your
> intermediate courses and distances on a plotting sheet.  Connect the start
> point and the point at the advanced sight time.  This single course and
> distance can then be used to transfer the LOP.  Of course this method
> depends on fairly accurate DR plotting, and good speed estimates.
>
> Cheers,
> Jay Florey
>
>
> > Monte Mechler Wrote
> > ....
> >
> > > BUT, HOW DO YOU ADVANCE THE MID MORINING LOP WHEN AND IF YOU HAD TO MAKE
> > > MULTIPLE COURSE CHANGES (tacking, ect.)????? HOW DO YOU CALCULATE YOUR
> > > COURSE MADE GOOD (TO ADVANCE ALONG)?????????
> > >
>
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