Patent ID: 7070469

Claim:
A dual propeller surface drive propulsion system for marine vessels having inboard motors, comprising: a drive shaft projecting from the transom of the vessel; an enclosed thrust bearing assembly mounted to the transom of the vessel, said thrust bearing assembly being pivotally connected to the drive shaft; a transom box mounted to the transom of the vessel that encompasses the thrust bearing assembly; an articulated outdrive pivotally connected to the transom box by a gimbal box which allows for articulation of said articulated outdrive about a plurality of axes, and wherein the articulated outdrive has an outdrive input shaft that is pivotally connected to the thrust bearing assembly; first and second, non-coaxial propeller shafts contained within the articulated outdrive wherein each propeller shaft has a forward driven end, an aft driving end, and a longitudinal axis of rotation; a surface-piercing propeller connected to the aft driving end of each propeller shaft; and a rudder extending from said articulated outdrive.