"Simple Simon" wrote in message
...


Aboard, one must always tack through the apparent wind. This
this is because while aboard nothing else exists for the observer
until the yacth comes to a complete halt. Then and only then can
the observer aboard the vessel know both the true wind speed and
direction.


It's a pity that you have to pretend to be this stupid to get responses.

Before tacking within sight of land, you check that your destination is
about 90 degrees to your current course (after taking tide into account).

Out of sight of land, it is important that you realise that your new course
will be about 90 degrees off your present course.


Regards


Donal
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