Multi-hull boat

Details Multi-hull boat Multi-hull boat

B - Operations, Transporting

63

B

B63B 3/06 (2006.01) B63B 1/12 (2006.01)

Patent

CA 2041548

A multi-hulled boat has at least three hulls, with the outside hulls extending forward beyond the central or inside hull or hulls. The hulls are tapered with a cross-sectional configuration that increases in size front to rear, thus forming a channel or tunnel between adjacent hulls which decreases in cross-sectional size front to rear. Air entering the tunnels is compressed, thus imparting a lifting force to the hulls lifting the hulls partially out of the water to decrease the hydraulic drag on the hulls. The hulls have identical cross-sectional areas at identical transverse planar sections thereof. The bottom of each hull is flat and inclined at an angle with the horizontal. The hull bottoms join the hull sides at a chamfer which increases in size front to rear. Shutters or flaps may be used to partially or fully close off the tunnels between the hulls to control airflow or to trap water-borne material to be collected and recycled.

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