Abstract: A collapsible watercraft comprises a foldable sheet and is transitionable between a deployable kayak configuration and a stowed configuration by folding or unfolding along predefined fold lines in the foldable sheet. In the kayak configuration, the watercraft is switchable between at least a single-seat configuration and a tandem configuration by installing a desired number of seat and footrest assemblies. At least some of the seat and footrest assemblies are installed in the kayak by strapping seat and/or footrest components to loops nonreleasably attached to removable floorboards of the kayak. The removable floorboards are installed in the kayak using extruded engagement profiles.

Abstract: A collapsible kayak may include a single-piece hull including a plurality of crease lines along which the hull is foldable. A floorboard lines a midship portion of the hull between a bow portion and a stern portion, and the floorboard includes a base and a pair of outboard walls permanently fixed at distal ends to port and starboard gunwales of the hull. The bow, stern, and midship portions are configured as a tri-fold, such that the bow portion and the stern portion of the kayak are foldable toward each other to overlap the midship portion of the hull when collapsed.

Abstract: A collapsible watercraft comprises a foldable sheet and is transitionable between a deployable kayak configuration and a stowed configuration by folding or unfolding along predefined fold lines in the foldable sheet. In the kayak configuration, the watercraft is switchable between at least a single-seat configuration and a tandem configuration by installing a desired number of seat and footrest assemblies. At least some of the seat and footrest assemblies are installed in the kayak by strapping seat and/or footrest components to loops nonreleasably attached to removable floorboards of the kayak. The removable floorboards are installed in the kayak using extruded engagement profiles.

Abstract: A collapsible watercraft comprised of a single high-strength foldable panel that is creased in a predetermined pattern to form living hinges, the panel being foldable to transform from self-defined compact knocked down package, into a rigid three dimensional kayak form. Other removable rigid structural members, bulkheads, seat assembly and floorboards help maintain the shape and integrity of the shell.

Abstract: A collapsible watercraft comprised of a single high-strength foldable panel that is creased in a predetermined pattern to form living hinges, the panel being foldable to transform from self-defined compact knocked down package, into a rigid three dimensional kayak form. Other removable rigid structural members, bulkheads, seat assembly and floorboards help maintain the shape and integrity of the shell.