Modern design and faired exteriors allows for a glossy blue paint job.

Efficient catamaran hull design. The boat does 50 mph top with twin 90hp motors and cruises happily at 30 mph with better than 3 milesgallon fuel consumption. Catamarans are created with a buoyant design. These catamaran hull design rules apply world over so if any boat designers or builders suggests their catamarans do not slam in any way we suggest there.

Even with 150 hp 4-cylinder engines the ArrowCat 30 can outperform other similar sized boats with larger engines. Catamaran planing surfaces are much more efficient than those on a monohull which relies on lifting strakes to lift the boat. Finer hulls are more efficient at high speeds but as weve just seen suffer from more WSA and so for normal cruising catamarans in average conditions a ratio of 111 - 131 seems optimum.

Catamarans As one of the oldest hull shapes imagine two logs tied together catamarans occupy a small niche in America and larger niches in some other areas of the world. Catamaran hull speeds are very high due to several factors. In modern catamarans the most popular trend.

The twin-hull design also offers less drag which increases the efficiency of the boat. They come from a very conservative design place. Charter operators sports fishermen and ferry owners prioritize function and bottom line when choosing a power catamaran boat.

This will not only result in great interior space but also in a very stiff and efficient boat. The process of designing a catamaran hull is equal parts physics. A catamarans Power to Weight ratio or Displacement Length DL Ratio is one of the most important efficiency indicators of a multihull.

The mainstream design office catamarans that I see look that way because those gold plate offices are most familiar with designing single hull vessels. The higher the number the slower the boat will sail. The Prismatic Coefficient Cp is a measure of the fullness of the ends of a boat the higher the number the fatter the ends and - surprisingly - the more efficient at high speeds.