Yachting World



What lies beneath: the Clubswan 50 Stella Maris at the Swan One Design class warm up session in Palma this summer. Note designer Juan K’s use of the turbecle effect on the rudder blades, similar to the leading edge grooves found on humpback whale flippers. Because the windward blade is often out of the water, these contours are designed to help aero- and hydrodynam­ics. Photo by Jesus Renedo/sailing Energy

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