Designed for boats of upper middle speeds 15-35 professional knots, or boats that require high performances and need a helix high step when limitations of diameter exist. Made in bronze to manganese of high resistance. Static and dynamic balance of high precision. The design high-skew provides a considerable reduction of vibrations and noise induced by the helmet and rudder of the boats. For it a profile of the shovels has been designed mixed ?airfoil-pointed? type that obtains the best results to diminish the cavitation and to obtain an effective and progressive push. Helices made with edge antihummings. Diameter and passage in inches.
