A hydrodynamic foil that slides through a yacht's hull is put through its paces - see the video here

Swing, lift, pump or dump, canting keels or water ballast. You might have thought all possible methods of achieving more stability had been explored. Apparently not. A new design concept claims to provide a novel solution to one of the most fundamental issues of yacht design – stability and how to generate it.

The new idea comes from UK-based yacht designer Hugh Welbourn, who claims his patented invention will not only develop more stability and improve performance across a broad spectrum of sailing monohulls, but will also help reduce the displacement of future boats, further enhancing the performance gains.

See the hydrodynamic foil put through its paces here.

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