Next message: Rosalie B.: "lv-ab: Next year - offshore?"
writes:
>I haven't actually tried this, but here's another idea I have had.
>It also
>uses a line and drogue, but this time just deploy the whole line,
>which need
>not be very long, and measure the tension by extension of a spring.
>A simple
>linear "spring balance" device should work. Of course, it would
>have to be
>calibrated to read knots directly, and the scale would probably be
>non-linear.
>I think I have actually seen such a device for sale in a catalog, so
>it ought
>to work.
Good idea - where did you see this device? When sailing, I usually
drag a 100 ft floating line with a monkey's fist on the end for
safety. I can pretty well tell what speed I'm doing just by the way
the line behaves (how far it's out of the water, how much turbulence
it and the monkey's fist create etc)
George - thinking about taking my winter cover off soon!!!
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