Variable draft means you can navigate in shallow waters too.

High speed catamaran hull design. The basic form is one of a fine entry bow and a flat box like stern section with 850mm maximum demi-hull beam giving a length to beam ratio of 12351 for our 11m hull. A discussion about catamaran hull shapes and how they relate to performance and sea keeping with specific reference to the 33 catamaran Mad Max. Height of sailplan CE.

Feb 3 2020 - Explore Keith A Daviss board Catamaran Hull Design on Pinterest. In rough water large portions of the windward hull will be exiting and entering the water at high speed. The advantages of catamarans are great resulting in fast speeds.

Took a lot of hard work to gather data as there is no former project to rely on. Doing research on fast efficient hull shapes for a 25 cruising catamaran capable of 2225 knots cruise and 30 knots top speed while still providing reasonable performance at lower speeds I found the following. Lightweight Catamaran hulls can be very speedy and efficient traveling quickly even with low wind speed.

Open bridgedeck catamaran hull speeds are not the limiting factor on speed and many catamarans routinely exceed the hull speed calculation. To get speed the hull shape is flatter with he shallow vee absorbing less power but still adequate to cushion the ride. 1 Efficient planning shape foil assistedCorsair 22 Foiler.

V m 244 V m 85. Effects of design parameters such as deadrise angle cross-section shape length-to-beam ratio forefoot contour etc. The engine power needed for the catamaran is typically 4 kWtonne and the motoring speed is near the hull speed.

Instinctively you might think that fine ends would be faster as they would cut through the water better. The most important catamaran design hull shape factor is the Prismatic Coefficient Cp. An 8m catamaran fitted with 2 x 75hp diesels will weigh at least 45 tons with just 33hp per ton giving a top speed of around 12 knots.