Patent ID: 7318388
Filing Date: 2008-01-15
Classification: B63B,Y02T

Abstract:
1. A system capable of influencing aerodynamic effects upon a powered multihull boat when said boat is in powered motion comprising: a powered boat incorporating a generally contiguous deck extending across said boat's transverse width and a multihull having at least one longitudinally extending tunnel formed therein, at least one aerodynamic element capable of interacting with the air stream the powered boat travels through when in powered motion, said aerodynamic element being selectively alterable in disposition while the powered boat is in powered motion, said alterable disposition of the aerodynamic element being capable of influencing the powered boat's response to aerodynamic effects, said aerodynamic element dispositions including a maximally elevated first disposition and at least one less elevated second disposition, wherein at least one of said aerodynamic elements is selectively disposable so that said aerodynamic element, when in said less elevated second disposition, interacts with said first air stream portion and said aerodynamic element, when in said maximally elevated first disposition, does not interact with a second portion of the airstream passing over a part of said contiguous deck; said transverse tunnel cross-sections of an aft half of said tunnel, absent said aerodynamic elements, being relatively proportioned such that more aftward transverse cross-sections are substantially not progressively narrower than less aftward transverse cross-sections; and at least one supplementary aerodynamic element, said supplementary aerodynamic element providing said system with an auxiliary capability of influencing the powered boat's response to aerodynamic effects by interacting with at least one of a third and said second portions of the air stream, wherein said third portion of the air stream both does not pass through any of the tunnels formed within the multihull of said powered multihull boat and does not pass over a part of said contiguous deck.