The hull is designed with a hollow nose area to cater for the intended sailor weight range: 40 kg to 100 kg. The heavier sailor can bury the nose without creating extra drag while the lighter sailor does not lose waterline length. The very strong low riding performance helps the transition to getting on the foils.
The forward curvature allows the wand connection to be brought forward for better response in waves. It also provides greater volume forward when bearing away to reduce accidental burying.
The stern is more voluminous to help in low speed manoeuvres and tacking that are most likely to result the stern sinking and coming off the foils.
It also enables the sailor to go aft to put the rudder up and down.