The Seabreacher is the latest watercraft created by Innespace. This larger two seat vessel is powered by a supercharged Atkins marine rotary engine coupled to a Hurth V-drive transmission. The Seabreacher is currently undergoing testing and will be available in limited numbers for Racing and demonstration events in spring 2008. At first glance, the new Seabreacher  may look very similar to the Innespace Dolphin. However, it  incorporates many design and engineering improvements that were gained from building, operating, and maintaining our first vessel. The body is fifty percent larger in volume, in order to make room for a full sized passenger as well as allowing for bigger and more powerful engine packages.  It's 50% larger and 20% heavier than the Dolphin Hull can accomodate larger, more powerful egine packages CANOPY Instead of using a retired F-16 aircraft canopy, we opted to use a wider and thicker canopy, as used on the new F-22 Raptor. The three-quarter-inch thick solid polycarbonate canopy is more than strong enough to withstand hard inverted landings, and is not prone to visual delamination seen on earlier multi-layered F-16 canopies. The slide-back canopy opening mechanism remains very similar to that of the original Dolphin's design. This system proved very effective, allowing the Dolphin to be driven at full speed with the canopy wide open. The off-cuts of the new chopped-down canopy were utilized in the underwater viewports positioned adjacent to the pilot's foot controls. These extra windows help the pilot avoid underwater obstacles and also give a 360 degree sensory experience to both pilot and passenger. HULL DESIGN The Seabreacher's hull resembles a more conventional deep V shape design in order to increase surface performance and reduce the amount of water spray while planing. Long inward cutouts behind the main wings are designed to further minimize spray coming off the main wings. There are no  downward facing chines on the underside of the hull, as we did not want the hull to generate more lift than the main wings could overcome when entering a dive at high speed. Seabreacher has a 3/4 inch polycarbonate canopy as used on the new F-22 Raptor POWERPLANT We needed to select a new more powerful engine for the Seabreacher . In particular we wanted a high power to weight ratio in a marine-ready engine package that could couple directly to a marine transmission. After an extensive search we opted to use the high performance rotary engine by Atkins Rotary Marine. The engine is lightweight (300lb), compact (basically a 2 foot cube), and generates 175 hp. Also, should we need even more power, a 250hp supercharged version is also available. Check out Atkins website to read more about their line of rotary engine packages at www.atkinsrotarymarine.com. DRIVETRAIN The drive has also been changed from an in-line drive to a V-drive layout. We have had problems with the Dolphin experiencing propeller cavitation at high speeds, but the Seabreacher's new V drive setup allows us to get the prop lower and further forward underneath the hull. It has also moved the center of gravity forward allowing for better balance and a greater tendency to pitch forward during jumps (allowing nose first re-entries). We selected an alluminum Hurth V drive transmission with a 2:1 gear reduction for maximum torque output. Atkins marine rotary engine generates175hp Supercharged rotary engine option generates over 250 hp! CONTROL SYSTEM We have redesigned the control systems in order to increase performance and simplify its operation for novice pilots. Operation of the main wings remains the same, with two independent hand operated controls. The rear control surfaces, however, have switched from a V-tail (ruddervators) to a more conventional independent rudder and elevator setup. The rudder and elevators are both operated with an innovative new  foot pedal control  system that pivots left and right on one axis and up and down on a separate axis. This will make the driving experience considerably more intuitive and less tiring. The rudder is now mounted directly behind the prop, giving vectored thrust for low speed manoveravbility. SNORKEL Seabreacher has a taller, larger snorkel, allowing for deeper dives and greater airflow capacity. The snorkel also incorporates an automatically closing butterfly valve to prevent water ingestion during even deeper dives. An AgCam submersiblee video camera pod is also mounted on top of the snorkel which allows the pilot to view the surface above via a dash mounted LCD screen. Snorkel valve automatically closes during dives Pilot has view ports for enhanced underwater visibility SAFETY Keeping Seabreacher afloat and totally water tight under all conditions was a top priority. Both the cabin and engine bay are sealed watertight with the aid of pneumatic aircraft seals. Three independent bilge pumps are also on board, should a rogue wave swamp the interior while driving with the canopy open. The hull contains enough floatation to keep the hull afloat and upright, even if fully flooded. The monocoque hull was engineered to withstand the hardest of impacts. Other structural safety features include a colapsible nose section, break away wingtips, and of course the strike resistant aircraft canopy. Both pilot and passenger are secured with Simpson five point safety harnesses. The canopy can be opened manually from inside and outside of the cockpit. The build-up of hazardous fumes can pose a problem in a totally sealed marine environment, so we have taken every precaution to avoid any such problems. The Seabreacher has a vent-free collapsable fuel cell, as well as using the very durable, vent-free, dry-cell Optima battery. Onboard fume detectors also notify the pilot of the presence of any hazardous fumes. CONSTRUCTION In designing and building the new Seabreacher, we have tried to simplify construction methods while maintaining strength and reliability. The prototype was built as a one-off monocoque structure, using vinylester and fiberglass with a Nidacore PVC honeycomb core. Future vessels will be made with a similar lay-up out of a four piece mold. All mechanical hardware is precision made from stainless steel, aluminum  and teflon, and designed to be easily installed and removed if necessary.  Body was constructed with fiberglass over PVC honeycomb Hull remains stable even when fully loaded STYLING When deciding to build a bigger vessel, we felt that it was important not to depart from the sleek styling oft the much smaller Dolphin. We needed to accommodate an extra full sized passenger and larger engine package, but we wanted to avoid a bulky sedan-like appearance. We also did not want to increase the volume of the craft unnecessarily, as it requires exponentially more power to drive a larger vessel underwater.   For this reason, we chose to build the lower hull (much like you build the rolling chassis of a car) before we built the final body shape. We installed all the major internal hardware as well as pilot and passenger, giving us all the necessary internal measurement constraints.  The Seabreacher's body was then carefully sculpted to match up with the new flare-sided canopy and lower hull section. The addition of the scallop-shaped sides and  raised spine running down from the dorsal fin further help to minimize the bulk of the new Seabreacher. The addition of the large viewports represented a difficult design challenge, but we think their shape, along with the more angled canopy, give the new vessel a more agressive look. Keep an eye on this page for new photo updates including shots of the Seabreacher's radical custom interior, featuring high-tech instrumentation by Faria and electronics by Dakota Micro