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post #6 of Old 01-22-2013
tommays
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Re: Calculating true wind

You are trying to do something far more complex than it sounds

Which is why systems use the through hull knot meter as the boat speed when doing the math on the speed and direction the masthead sensor supply's

The above INFO is whats happing to the sails at that moment in time which is the purpose of the system

Unless somethings really changed my Chartplotter has current stations and can tell me to react as the current changes the course cross

BUT lacks the ability to pick the correct course from (and compensate for current ahead of time ) Northport TO Mamaroneck which is a fairly easy thing for and experienced navigator to do

1970 Cal 29 Sea Fever

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1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
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