America's Cup - It is very high tech
 

A lot has changed in the America's Cup since I last was following it. Sails? We don't need no stinkin' sails! These guys know a thing ot two about aero and hydrodynamics!

The vessels are catamarans with hydrofoils and they literally fly:
http://www.boatdesign.net/forums/att...tnz-3-6-13.jpg
http://www.culut.com/static/wallpape...-wallpaper.jpg

Calculated To Win: Supercomputers Power America's Cup : All Tech Considered : NPR

Here's a new concept called "apparent wind" - this is what allows them to sail faster than the wind:

https://www.youtube.com/watch?v=CvSRuer2V_k

http://www.youtube.com/watch?v=CwtMkIH2IYk