As the boat approaches the 'hull speed' the flow will have a greater vertical component - winged rudder in central position

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As the boat approaches the 'hull speed' the flow will have a greater vertical component - winged rudder in central position

© Graham Camm

As the boat approaches the 'hull speed' the flow will have a greater vertical component - winged rudder in central position photo copyright Graham Camm taken at and featuring the National 12 class

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