In other words, they don't make the boat faster by lifting
the boat up? Is that your final answer?


"Capt" Rob wrote:
In spite of Thom's assertions, drag wins the day.

Can you answer the question without trying to insult others?

... You can't get lift
without the cost of drag

Hmm, seems like I just heard this somewhere...

... a 35s5 is unable to gain enough velocity
to use such a wing to lift the hull. The 35s5 semi-planes based on the
hull form factor, not the wing.

But other boats might? So you're still prevaricating and
tap-dancing?


Any effort to raise the boat my inducing lift on a dead run would be
made useless by lack of velocity combined with drag.


Hmm, lack of velocity... drag... you need to talk to
somebody at the Department of Connecting the Dots.


Are you sure? "to reduce the plate effect" is generally not
a design goal of any foil... otherwise why put an end plate,
in the form a wing, on it in the first place?


The wing on the 35s5 is a compromise

Ya think so?

... it costs performance in most
situations. The plate effect is one of those costs and efforts to
minimize the plate turbulence is certainly a design goal...one of many
for a wing keel.


There you have it folks. One of the reasons for using a wing
keel is to gain an end plate, and yet the keel is designed
to minimize that effect.

More dots that need to be connected, looks like.


You're saying that your keel is different on different tacks?


It behaves very differently on different tacks because forces are
distributed differently all the time. Say that 4 times fast!


I'm not even going to say it once, because you clearly don't
have a clue.

Force are distributed differently on different *points of
sail* but not on different tacks.

Gee an expert sailor is going to get these basic terms
muddled sometimes though. I mean it sure is complicated,
that's why we need an brilliant & experienced sailor like
you to explain how keels and stern platforms work.




I only recently (last few months) started learning about keel design.
I'm slowly getting it.

Do tell.

DSK