Abstract: A multi-hull variable aspect surf rescue boat is provided, which can support and contain occupant(s) and cargo and can be readjusted in shape and size to vary the boat's length overall (LOA), beam on center (BOC), the LOA/BOC ratio or OAR, thereby changing the boat's attitude, center of buoyancy and center of gravity without changing the boat's components or weight. The boat includes a frame assembly comprised of a centerline tube and three or more radiating, extendable and retractable telescoping tubes which intersect at a center line of the boat. A respective starling control assembly is attached to each telescoping tube, providing buoyancy to the boat. The frame assembly carries a platform for carrying the occupant(s) and cargo, and a means of propulsion for transporting the boat in surf or turbulent waterways.

Abstract: A multihull variable aspect surf rescue boat comprises four component assemblies to form a modular component system comprising: 1. structural tubular frame chassis and frame payload platform that support and contain occupant(s) and cargo, 2. plurality of adjustable modular flotation control assemblies that control the vessel's buoyancy and steerage, 3. plurality of telescoping tube strut assemblies that vary the vessel's overall length to beam ratio and control the craft's attitude, center of buoyancy and center of gravity, 4. propulsion and control assembly to propel and guide the vessel. Component assemblies 1, 2 and 3 are constructed to minimize the vessel's wetted surface subject to lifting and rotation forces of waves and reduces the skin friction and water resistance. Component 2 provides the operator with improved control of buoyancy. Component 3 provides the operator improved control of the surf rescue boat's geometry, center of buoyancy and center of gravity.