RB wrote:
}}} It's hard to imagine that if your computerized nav system doesn't
currently allow you to determine the distance between any two points on
the screen and their relative bearings you will be able to find
something after market is going to make that feasible. {{{

I'm an old retired geezer and am stuck with loran. It serves my purposes
very well, and it would cost me money I can't spare to go to more
sophisticated eqpt. I have scads of fishing spots out in the Gulf. But,
they're currently unorganized.

I want to be able to sit at my desk at the house and get a distance and
bearing from a point in the pass to the fishing spots. Once I get those, I
can put 'em in a database and can array them on any criteria. Yes, some
loran sets easily do the calculations and give you range between two
points, and bearing from one point to another. Mine doesn't, though, and
I'm not sure now which ones do this. I know I've had lorans in years past
that did. With my set, you have to be at point A to get the calculation of
range and bearing to point B. I can only get range and bearing if I'm
actually at point A, and I want to be able to do my constructions from the
house. It's an interesting problem.

At the risk of sounding like a smart ass, have you considered using a
paper chart, parallel rules, and dividers? If these calculations are
being made at home, anyway, there
should be plenty of time and space available for traditional chart
work. If you need the distance to be ridiculously accurate, (down to
within a few yards), that can be more difficult with traditional
methods but you should be to determine the bearing between any two
points on the chart with more than serviceable accuracy.