Power boat with extended propeller pocket

In a power boat having a hull with a bottom and a stern transom, bottom extension means extending generally the full width of said bottom adjacent said stern transom and rearwardly from said transom and defining an extension of said bottom continuous with said hull bottom and a tunnel interrupting said bottom extension, a screw propeller disposed in said tunnel, an engine disposed in said hull closely adjacently forward of said transom, a short straight propeller shaft drivingly connected to said engine extending therefrom at an acute angle with respect to the at-rest waterline into said tunnel and carrying said propeller solely therein, said tunnel and said propeller shaft and propeller being below said waterline of the boat, said tunnel extending forwardly into said bottom, said bottom extension means providing increased lift to compensate for the reduction of lift caused by said tunnel extending into said bottom.

In a power boat having a hull with a bottom and a stern transom, bottom extension means affixed to said transom extending the full width of said bottom adjacent said stern transom and rearwardly from said transom and defining a smooth bottom extension continuous with said hull bottom, said bottom extension means having a continuous tunnel interrupting said bottom extension, said tunnel having a rearward end and a roof all submerged below the at-rest waterline, said tunnel further having a portion forward of said rearward end which is substantially parallel to said at-rest waterline above said propeller and which gradually declines downwardly rearwardly of said propeller and terminates in said rearward end, said tunnel being continuous and uninterrupted throughout said bottom extension means, a screw propeller disposed in said tunnel, an engine disposed in said hull closely adjacently forward of said transom, and a short straight propeller shaft drivingly connected to said engine extending therefrom at an acute angle with respect to said at-rest waterline into said tunnel and carrying said propeller solely therein, said tunnel and said propeller shaft and propeller being below said waterline of the boat, said bottom extension providing increase lift to said boat.

In a power boat having a hull with a bottom and a stern transom, bottom extension means extending generally the full width of said bottom adjacent said stern transom and rearwardly from said transom and defining an extension of said bottom continuous with said hull bottom and a tunnel interrupting said bottom extension, a screw propeller disposed in said tunnel, an engine disposed in said hull closely adjacently forward of said transom, and a short straight propeller shaft drivingly connected to said engine extending therefrom at an acute angle with respect to the at-rest waterline into said tunnel and carrying said propeller solely therein, said tunnel and said propeller shaft and propeller being below said waterline of the boat, said bottom extension means providing increase lift to said boat, said tunnel including a forward end portion extending forwardly of said transom, said bottom extension means compensating for the reduction of lift caused by said tunnel forward end portion in said bottom.