North SONAR HM – Wing Foil Mast

SONAR-HM

High Modulus Carbon Mast

Incredibly thin. Impressively fast. We have reduced the thickness of the submerged part of our new high-modulus prepreg carbon masts by over 15% compared to our standard carbon masts, while simultaneously increasing both bending and torsional stiffness. The HM80 is preferred for disciplines without wind power – surf foiling, pumping, and downwind. The shorter line length across the entire mast length reduces drag and increases maneuverability. This results in more glide, more efficient pumping, and faster turns. The HM85 covers all disciplines, with a focus on wing foiling. Wind-powered disciplines require edging against the wind to generate propulsion. Part of this propulsion comes from the front wing, another from the mast. To deliver this drive efficiently, the line length in the submerged part of the mast is slightly longer. It increases towards the mast tip to maximize stiffness without increasing drag, as this part of the mast is out of the water when foiling. A more efficient underwater shape means less drag and thus higher and more easily achievable top speeds. Ventilation at the mast is now a thing of the past. We have paid special attention to this detail, so that regardless of sea conditions, ventilation at the rear part of the mast is significantly reduced. The HM105 is optimized for racing. The thickness of the submerged part of the mast is another 1 mm thinner than that of the HM80 and HM85 to achieve maximum top speed. Therefore, this mast is not suitable for jumping. As with the HM85, the line length in the submerged area is designed to provide good lift drive, while the line length above the waterline increases to maximize stiffness. A more efficient underwater shape means less drag and thus higher and more easily achievable top speeds.