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Catamaran Hull Spacing. It is often frightening how many closets are found on a multihull. Above High freeboard and angled-out hulls are trademark features of this capable Catana 521.
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Because the engines can be spaced relatively far apart catamarans usually manage tight spaces easier. The engine power needed for the catamaran is typically 4 kWtonne and the motoring speed is near the hull speed so. Because catamarans require more materials and human effort to produce it will tend to be more expensive compared to a comparably sized mono-hull.
Fixed keels allow you to beach your catamaran easily and your hull remains intact if a collision occurs.
Even on a typical 40 catamaran a double berth aft is separated from a desk and lounge by closet space while forwards one can find en suite heads with separate walk in showers. So you cannot just double the drag of a single hull and expect to get accurate results. One reason why just flying a hull is fast the Cp increases when you do as well which also helps. So the general trend is to go as wide as one can.
