Sven Yrvind · video

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Sven Yrvind demonstrates a hanging oar system mounted from a gallows on his 5.3-meter, 1.4-meter-beam boat, adapted from an oriental sculling method he learned in Japan.Watch The oar hangs freely with near-zero friction, and a rope running down from the mount acts as a thrust bearing, allowing the rower to lean body weight against the oar rather than pull with the arms.0:21 Yrvind argues legs are several times stronger than arms, making the technique two to three times more powerful than conventional rowing.1:21 He contrasts this with European oar practice and questions why the method has not been adopted in the West.1:37 The boat's small size — a fraction of a typical cruiser in both dimensions and cost — makes muscle-powered propulsion practical.2:53 Yrvind, now 85, connects the system to childhood memories of sculling a 14-foot rowing boat among the islands near Brennyramstor to fetch milk and bread, an area restricted to local residents during wartime.6:09 He plans to lengthen the oar and add a hatch to the setup.1:43 Leg-driven hanging-oar sculling delivers significantly more power than arm-only rowing on a small boat.

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