Common boat designs are a catamaran with two hulls, or a trimaran with three hulls. Hobie Sailboats produced a production foiling trimaran, the Hobie Trifoiler, the fastest production sailboat. Common boat designs are a catamaran with two pontoons, or a trimaran with three. This led in due course to the proa, catamaran, and trimaran. Catamaran and trimaran configurations are also widely used for high speed craft. Another trimaran sailboat is the Windrider Rave. A trimaran is a vessel with three hulls. It has added stability and righting moment from the trimaran amas or floats. Crowhurst planned to sail in a trimaran. The basis of Austal's seaframe design was the trimaran hull . The trimaran hull will allow flight operations up to sea state 5. Tetley sailed the "Victress", a plywood trimaran that also doubled as his home. MacArthur in the trimaran "B&Q/Castorama" sailed at an average speed of 15.9 knots. He left Gabon and crossed the Atlantic to Brazil on a Corsair F-28 trimaran. The three escape to open sea aboard the trimaran.