The bottom of the surfboard appears to have planking which is fan like, this is not an illusion, in fact the planking is narrower on the far side of the board and wider on the side closest to the camera. This pleasing visual effect is due to the paulownia logs being cut carefully to minimise waste. By tapering the planking to suit the log 20% more usable wood was obtained.
The bottom has a single concave through the middle of the board starting about 15 inches back from the nose and diminishing a similar distance from the tail, a deep concave isn't needed as the span efficiency of the 27 inch wide hull is already high, so we've applied 1/8" at the deepest point. The concave was laminated into the board using our usual method.
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