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A cathedral hull is a hull shape used in modern boats, usually power-driven. It can be thought of as a kind of vestigial trimaran in which the center hull has two smaller side hulls which are so close to the main hull that there is no longer any open space. A cathedral hull is a vee-bottomed boat with sponsons which extend almost as far forward as the main hull. The airspace between the hulls may be very small or nonexistent-a good example would be the classic "Boston Whaler 13" which is nearly a flat-bottomed scow at the stern.

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10y ago

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