The new big America's Cup boats fly through the water. As they get up to speed, they lift themselves up until they are zipping through the water balanced on a submerged wing. The speeds are pretty ridiculous compared to the sailing that I'm used to.
A few months ago we got to see the smaller America's Cup boats racing and it was great (you may even remember the dramatic shots we got of the Oracle boat flipping). I can't wait to see these new bigger boats this summer.