Briggs purchased the composite hull from a well-known custom builder who, for commercial reasons, prefers to remain anonymous. The hull consists of two layers of Core-Cell foam on the bottom and one on the sides and was vacuum-bagged with biaxial and mat fiberglass and Kevlar. This high-tech method creates an exceptionally light, stiff, strong and quiet hull. And Briggs couldn't be more pleased with the initial results he obtained from using these materials. With twin C32 ACERT 1,850 hp Caterpillar diesels, the 68 cruises at an impressive 32 knots and hits 40 at wide-open throttle.