Cathedral_hull
A cathedral hull is a hull shape used in modern boats, usually power-driven. It has sponsons which extend almost as far forward as the main hull. The airspace between the hulls may be very small or nonexistent.
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Depending on the proportions of the sponsons and the depth of the main hull, the cathedral hull can approach the handling characteristics of either the Hickman sea sled, or the vee hull. The naval architect first credited with the successful use of the deep-vee hull form, C. Raymond Hunt, was involved in the design of the original 13’ Boston Whaler. It is cathedral hulled forward, but nearly a flat-bottomed scow at the stern.
The term "cathedral hull" refers to the resemblance of a section through an inverted boat to that of a medieval cathedral.