I am selling my Klem Outrider Boat. This is the original production prototype made by Concordia Custom Yachts in South Dartmouth Massachusetts, makers of the America's Cup sailing ships. These boats, depending on features included, sold between 50 to 80 thousand dollars and were capable of going up to 140 mph. The Klem boat measures 19.5" long and 5.5"wide at the body and 9.5" wide from wing tip to wing tip.  The Klem OutRider is an aerodynamic boat with a water prop that uses air as its principle source of lift, stability, and control. Like an airplane, the OutRider has been shaped by the wind, and every major feature has a specific purpose. Tested and proven in the wind tunnel, the hull is an NACA airfoil section that has been re-cambered to work better in ground effect. To reduce stalls even at very high angles of attack, OutRider's leading edge is swept back 60 degrees. The cowl in front of the pilot is shaped like the cowl of a racecar to minimize wind buffeting around the people in the cockpit. The headrest is shaped to work with the windshield and cockpit sides to raise the path of high-energy air up over the pilot and passengers, and then re-attach to the hull. The twin tails help control the wind vortices that occur at the sides of any lifting surface, directing them up to the outer horizontal tails and minimizing their impact on the inner horizontal tails.