![]() Is a stainless steel wing in the shape of a chevron, positioned slightly ahead of the boat’s center of gravity, that spans the tunnel created by the catamaran hulls. The aft view (bottom) shows two trim foils aft, and that the lifting strakes run all the way to the transom. The forward view (top) shows the main foil on the centerline in tunnels that spans the hulls but is no deeper than the lower edges of the hulls, along with two pairs of lifting strakes on the outboard edges of the hulls. The typical layout for the Hysucat 8.5, which is 27’11” (8.51 m) long, shows an open foredeck with U-shaped seating forward, a center console with twin seats forward, two helm chairs aft, and a four-person bench seat across the transom. ![]() With a draft of approximately 1'6” (0.46 m), the design is well suited for operation in shoal waters. In profile, the Hysucat looks a lot like the traditional monohull fiberglass rigid inflatable boat (RIB). ![]() Hysucat, an acronym for Hydrofoil Supported Catamaran, brings the science of hydrofoils to performance planing catamaran RIB hulls to add lift, maintain a more moderate trim angle as speed increases – and be far more stable at high speeds. But they can also be less stable at higher speeds. ![]() With reduced drag from two smaller wetted surfaces instead of one big hull, they produce greater speed with similarly-sized engines than monohull RIBs. High performance planing catamaran RIBs are, by their nature, faster and more fuel-efficient than similarly sized monohull RIBs. High speeds with relatively low-horsepower outboard engines are easily possible with the Hysucat 8.5. The resulting company took the name of the new concept as its own – Hysucat. This collaboration resulted in the birth of the original Hysucat – “HYdrofoil SUpported CATamaran” - which led to a new breed of hull designs that became popular in South Africa. According to the company, this led to competing in offshore powerboat events where it proved its superior design by outperforming the competition. Conradie did the technical design, interior and exterior design work, and Professor Hoppe designed the hydrofoils. Of these new vessels were designed and proven in the test tank facility at the university and sea trials were carried out to evaluate the hydrofoil concept. As a result, Malan Conradie was involved with the design and development of hydrofoil supported catamarans from its earliest days. For 15 years, Conradie had worked with Professor Gunter Hoppe, a world authority on hydrofoil technology, and head of Marine Dynamics at the University of Stellenbosch in South Africa. Throughout the 20th century hydrofoils have been used primarily for both passenger ferry and military purposes because of their speed, fuel-efficiency and load-carrying abilities. In 1919, he set the world speed record of 70.86 mph in a hydrofoil. Alexander Graham Bell was an early exponent of the concept and started experimenting with hydrofoil boats on the Bras d’Or lakes in Nova Scotia in 1908. and Great Britain in 1898 by Enrico Forlanini. There is nothing new about hydrofoils on boats, the concept being patented in the U.S. High speed runs in shoaling waters are not for the faint-hearted, but the shallow draft, lift and reduced wetted surface of this Hysucat 8.5 demonstrate that it is possible. She is intended to be a more functional platform for a wide range of uses - day boating, fishing, marina hopping, diving and snorkeling, a tender to a larger yacht - any activity in which a rigid-hull inflatable boat (RIB) usually excels.Ī power catamaran with those attributes will also be valuable to commercial tourism operators, law enforcement officials, emergency first responders, and the military. Hysucat has set out to create a faster, more fuel efficient, and inherently more stable high performance planing power catamaran. ![]() The bow is up-swept for a drier, safer ride in big waves. Acceleration Times & Conditions Time to PlaneĢ persons, 1/2 fuel, no water, 50 lbs. ![]()
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