Michael,

If memory serves me correctly, Dennis Connor's Americas Cup catamaran "Stars and Stripes" (1988 challenge) had a hard wing sail with winglet "tips" at the top of the mastwing. The mastwing was built and tested by Burt Rutan's company, Scaled Composites in Mojave, CA. The mast tips were added to reduce vortex drag after wind tunnel testing.

Last edited by tigerboy; 01/24/06 04:01 PM.

Tiger Sailor