Some of those catamaran powerboats are simply.
Power catamaran hull design. This POWER CATAMARAN was designed to be built using the FIBERGLASS panel construction or ALUMINUM using our CUTTING FILES and boatbuilding techniques. P m 4 x m LDC 1025P m 28. This varies a bit more than the other factors depending on weight and design but generally speaking it takes fewer horses to power a catamaran and they often get 10 to 20 percent better fuel economy as a result.
While the lengthbeam ratio of catamaran L BRC is between 22 and 32 a catamaran can be certified to A category if SF 40 000 and to B category if SF 15 000. The most important catamaran design hull shape factor is the Prismatic Coefficient Cp. Innovative boat designs that genuinely enhance the boating experience are rare.
Admiral Powercats are leagues ahead in design with a fuel efficiency that most boat-owners would envy. Why choose a DC 7 8 and 9m over other catamarans. I suppose you could build an ultralight catamaran and get 40 knots with the available power.
They will surf down waves and reach a point where the power of the sails and speed will exceed the ability to keep the bows out of the water and the boat will pitchpole. However everything is interrelated. Sometimes they happen at the same time.
At Bennett-Worrallo SeaCat Ltd we pride ourselves on the manufacture of commercial power catamarans based on a full displacement hull design the heritage of which can be traced back over 40 years. Notice that Thidar catamaran is a round bilge hull and our design is a chine hull catamaran. This design lifts the boat slightly when it reaches higher speeds making it feel lighter and faster.
Instinctively you might think that fine ends would be faster as they would cut through the water better. We create the chine hull using the values of the offset table for the 15m GeoSim catamaran as the limits. But in fact you want a high Cp for high speeds.