OK, I just read about this boat in this months boating magazine. It's a Don Smith 40ft APTD. A "ruggedized" version of their 42 ft center console fishing boat. It's been chopped down to 40 ft to fit in a C-130 cargo plane, and is powered by twin 440 bhp Yanmars hooked up to a "Power Vent" propulsion system whereby the exhaust is directed into the prop tunnels reducing noise and heat signature. Its got surface piercing propellers set in tunnels beneath the boat. APTD = Advanced Propulsion Technology Demonstrator. It's currently being shown at the MACC (Multi-Agency Craft Conference) held at Naval Amphibious Base Little Creek un Norfolk, Virginia,