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Hi Guys


Thanks for your replies.
Red seems to have something of the right idea, but it does'nt need to be
so elaborate, is all it needs is to take a back bearing on float and
compare it with the boat's course  . Unfortunately, to do this
accurately, you will need to observe  the float  for a pretty  long way
back.
The problem with leeway is that it is so variable. It depends on the
boat, the sails set, the angle on the wind, the wind strength and the
sea state. To name but a few!. Some skippers are supposed to know their
boat so well as to know what leeway to assume under any conditions.  I
question how  they acquire that knowledge for there are no tried and
tested means of measuring it.
GPS will help of course, but a comparison with observed Drift angle
would be good data. so it would be nice to be able to measure the angle
from the boat, Very difficult at night. Has anyone thought of using
fireworks,  say a Golden Fountain or some such that floats on the water
floats astern and can be seen for some time when it goes off.
 Has anyone got a better idea?

Clive.

Red wrote:
> Clive-
>  Try popcorn or bread instead of styrofoam. The fine is way less if
> you get caught.
>
> I think you'd need a way to measure how far aft the jetsam was, and
> the angle out to it, to get a real value for leeway. I suppose if you
> used a large enough ball of popcorn (caramel corn?) you could
> measure the angular diameter of it to find out how far away it
> was....but at a certain point a GPS really DOES start to sound attractive.
>
> >


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