Abstract: A collapsible portable boat with enhanced rigidity, comprising a main skeleton frame and hull, including an end stem section and gunwales connected to each other by a gunwale connecting means, further characterized in that the hull is of flexible material, a floor section affixed to that portion of the hull section which defines the bottom of the boat and which is disposed between the stringers and the flexible material of the hull, characterized in that the skeleton frame comprises a plurality of support stringers running the length of the boat along the bottom and sides of said boat, including support formers arranged transverse to said lengthwise support stringers, characterized in that the support stringers themselves comprise a plurality of short sectional support elements which are affixed to one another by means for maintaining tension between said short sections, and a means for developing tension between said skeleton structure and the outer flexible hull positioned between the flexible material of t

Abstract: A multi-function/positioned chair for a watercraft which can be adjusted as between sitting, kneeling, and portaging positions, comprising a seat which contains a front, rear, top and bottom sections, a structure for supporting the canoe on the front section of said seat when portaging, including a first pivot attached at said front section at the bottom of the seat and proximate to said portage support, an adjustment arm attached to said first pivot, a second pivot attached to the rear section of the seat, a first leg affixed to said seat at said second pivot and extending downwardly and under the front section of said seat, a second leg attached to said second pivot extending downwardly and under the seat under the rear section of said seat, and a member for connecting said first and second legs to maintain said legs apart under a load, characterized in that the first and second pivots are selectively disposed relative to one another, and the lengths of the first and second leg are adjusted such that the ch

Abstract: A collapsible portable boat with enhanced rigidity includes main skeleton frame and hull, including an end stem section and gunwales connected to each other by a gunwale connector. The hull is made of flexible material, and has a floor section affixed to that portion of the hull section which defines the bottom of the boat and which is disposed between the stringers and the flexible material of the hull. The skeleton frame includes a plurality of support stringers running the length of the boat along the bottom and sides of the boat, including support formers arranged transverse to the lengthwise support stringers. The support stringers themselves include a plurality of short sectional support elements which are affixed to one another by tension between the short sections, including tension between the skeleton structure and the outer flexible hull, which tension substantially prevents longitudinal hull flex.