jeffies, pahleeeeeeeeeeeeeeeeeeeeeze ask your wife to read every last thing you
write **before** you hit the post key. that way we won't see the trash you
wrote below.
PLEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEAAAAAAAAAAAAAAAAAA AAAASSSSSSSSSSSSSSSSSSSS
SSEEEEEEEEEEEEEEEEEEE. okay?

There are no aircraft flights under discussion here. However, if we're
talking
about planes where electronics might not be used, then the speed is probably
rather low, and the wind speed could easily be 20% of the plane speed.
Worse,
you could have a significant wind shift and have no idea it happened. In a
boat, the currents are usually under a knot, and rarely is the deviation from
the prediction more than knot. You seem to be basing your entire claim on
the
possibility of unexpected 10 knot current in totally random directions. This
show your complete lack of experience.

Further, your completely ignoring that fact that for piloting, a major part
of
navigation, there are many techniques that have no analogue in flying. But
you
wouldn't know anything about this, would you?




"JAXAshby" wrote in message
...
But to claim that there is "no qualitative difference between navigating"
a
plane and boat just shows you have no practical experience doing either.

quite the contrary. it shows I have done both.

actually, in air nav you don't have to make as much allowance for winds,
for
the speed of the an airplane is many times the speed of the winds, for the
aircraft flights under discussion here.