Check this sailing submarine: http://www.youtube.com/user/WTBforsail.
It is submerged, to avoid turbulence of the waves. Also notice the sail solution. The inventors are two Dutch graduation students: Alex de Vos and Elkan van den Boogaard. Contact them for our team?? There will be a small article featured in the Yacht Vision Magazin, May 31, on the same page as Protei for which V2_ gave some input.