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post #8 of Old 08-02-2012 Thread Starter
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Re: Navigation Problem


Some good replies.... No workable solution I can see.

Smartphone would give me SOG, magnetic direction of boat and comparing consecutive gps positions would give me direction of travel. Dividing the beat angles by 2 should get the wind direction. Surely this lot should give me a good set of data to Sussex current out

It is the tidal currents I am trying to find as opposed to tides.

Thanks in advance
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