You guys are getting boring. Maybe the two of you can get together by
ganging up on me!

:-)


"JAXAshby" wrote in message
...
jack, you also need air breath, a hull that floats, a rudder, sunscreen
protection and maybe condoms if you might get lucky.

However, none of those in anyway affect how the airfoil on a sail works,
which
is 100% the same as the way the the airfoil on a wing works.

andy, lift is lift. airfoil or water foil or ethylenglchol or methanol
or
whatever.


Sails are asymmetrical, keels are symmetrical.

Makes a difference.

But to sail upwind effectively you need both sails and a keel. Ergo -
sails are not 100%. Downwind is another issue. I watch Lasers raise
their keels on a leeward leg.


Jack
_________________________________________________ _
Jack Dale
Swiftsure Sailing Academy
Director/ISPA and CYA Instructor
http://www.swiftsuresailing.com
Phone: 1 (877) 470-SAIL (toll free)
_________________________________________________ _