Designed around the concept of Ultra planing: maximum efficiency in the lightest winds. When there’s barely white caps on the water, the UltraSonic gets going and flies on the water. With every gust and every wave, you can tune the board to foil up and fly, picking up speed and passing lulls like they’re not even there.The wide shape continues from last year with new, minimalist racing graphics and our new UltraCore technology.The UltraSonic design starts from the iSonic base and loses more thickness for a wide and slim profile. The current shape is 7mm thinner than the previous generation for a wide wind range.Heel extensions allow the back foot to apply a positive pressure on the rail. Without them, there would be a slippery angle of the rail and your back foot would fail to provide constant power.The UltraSonic’s nose is also longer than an iSonic which makes tacking, jibing and getting going easier and more accessible.The cut-away shapes, combined with the side cut-outs and heel extensions reduce wetted area for the same lift, which makes it more efficient. The fin gains traction and the board locks on to its fin.Most importantly, the width of the tail remains identical to previous models to maintain the UltraSonic’s ability to provide power, anti-roll stability through chop and acceleration out of a jibe.The zero tail-kick rocker provides a smooth entry into planing while making the board easy to control when fully powered up.We’re now offering the UltraSonic in two new constructions: the new UltraCore Carbon model that replaces last year’s Carbon model with a stiffer, crisper feel. We’ve stiffened up the board between rider’s back foot and the mast foot pressure, with four Smart Carbon vectors on the deck and a full Carbon Innegra perimeter band.Source:  www.star-board-windsurfing.com

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