Abstract: A boat hull system for reducing the friction between boats and water. The boat hull system includes a boat with a front and a rear. Towards the front there is a hull with a forward portion that includes a width tapering smaller toward the front and towards the rear there is a rearward portion that includes a substantially uniform width between the forward portion and the rear. The hull includes a lower surface with a keel ridge. The forward portion is substantially smooth between the keel ridge and a lateral side of the lower surface. The lower surface of the rearward portion includes a plurality of strake ridges extending substantially parallel to the keel ridge, and includes at least two strake ridges on each lateral side of the keel ridge. The adjacent strake ridges define a channel therebetween. An air duct extends from the lower surface of the forward portion and the lower surface of the rearward portion for moving air between the forward and rearward portions.