US Patent 11535342 Inflatable paddleboard with exterior stringer system

Systems and methods to provide an exterior stringer system inflatable paddleboard. The exterior stringer system inflatable paddleboard maintains the benefits of a baseline inflatable paddleboard while providing increased strength, such as increased rigidity or stiffness. The exterior stringer system is positioned on the bottom surface of a baseline inflatable paddleboard. In one embodiment, the exterior stringer system is formed by a set of longitudinal stringers positioned on opposite sides of an inflatable paddleboard and a set of transverse stringers arranged in an X configuration between the longitudinal stringers.