Unlike other boats on the market, we utilize proprietary SPI (Single Piece Infusion) and PermaGrid® Technologies to create unsinkable boats. In SPI, Vinylester resin is chemically bonded in a close-mold vacuum infusion process that bonds the hull with composite structural beams, creating a single structural unit. The result is a stronger, safer and more efficient boat that's just plain better.Learn more about our unsinkable boats.