Two additional hydrofoils are arranged each on the stern of an outrigger so that each is clear of the water if the side wind.
Trimaran with hydrofoil. Sailing in the Marlborough Sounds New Zealand during January 2014. It was recently posted by a sailor identifying himself as Craig Tuffnell. Sailing a fast hydrofoil trimaran is easy if it is designed well like this CATRI.
Model tests and numerical simulations investigate the application of a hydrofoil supported water craft Hysuwac hydrofoil system for trimarans drawing on experience for foil-assisted catamarans. Of course high speed requires that the boat should have low drag and this is achieved with the narrow hulls of the trimaran and the lift of the hydrofoils. There are V-shape foil systems flat type foils and deeply submerged foils.
The CATRI 24 provided a really comfortable 90 hydrofoil stabilised platform upon which to take to the sea. The foiling TF10 trimaran is the translation of Morelli. Dimension 26ftx31ft with 3 T fo.
Inclined retractable foils are placed in a head of each outrigger forward of the center of area of a sail and from the center of gravity of the trimaran. The TF10 is a 4-point foiling boat. The vids description on YouTube reads as follows.
In such a case the foil would be. The fundamental design concept behind all hydrofoils is the idea that the foil must carry the full load weight of the craft. In this mode the hydrofoils lift most of the hull out of the water providing a stable ride with only the aft end of the hull skimming the water.
These are the first trials up on the hydrofoils in light and puffy winds. While foils are demonstrated to effectively decrease the resistance of trimarans a comparison shows that a catamaran with similar displacement and same speed is still superior to the trimaran with or without foils. The Canadian-built hydrofoil vessel Bras dOr A hydrofoil ferry.