Abstract: A pleasure boat having a rectangular passenger area for operation at high speeds in moderate seas, planes on ski-like planing surfaces on the bottom of laterally spaced, knife edge hulls located on the starboard and port sides of the craft and the stern end of a wedge shaped bottom rounded to assist in turns; the rounded bottom also having flutes to improve tracking and strakes to assist in the lift and to divert spray from the craft; the two forward hulls terminating in tunnels located along either side of the rounded bottom to reduce greatly the surface area in the water and to provide lift to assist in planing.

Abstract: A pleasure boat for operation at high speeds in moderate seas, and having a rectangular passenger area, planes on ski-like planing surfaces on the bottom of laterally spaced, knife edge hulls located on the starboard and port sides of the craft. The boat has a centrally symmetrical wedge commencing at the forward transom of the boat and extending to about the beginning of the planing region toward the stern of the boat and a relatively thin plate extending preferably cantilevered, from the bottom surface of the wedge to a sufficient distance forward of the rear transom to accommodate a propeller. The plate is held in a normal position by shock absorbers and a drive shaft from an inboard engine extends through a vertical wall formed by termination of the wedge to a propeller at the stern of the craft, the shaft lying between the bottom of the boat and the plate.