Multihulled boats have a number of long-known and seldom-disputed design advantages over mono-hulls. First, catamarans ride softer because they don’t have a large, round bottom that slams against the waves. Second, a catamaran’s twin hulls focus the buoyancy around the outside of the boat, rather than in the middle, creating much greater stability. Third, the two narrow hulls generate about one-third as much wetted-surface, or drag, making the boat more efficient. And last, the hulls place the engines farther apart, increasing maneuverability.
Catamarans slice smoothly through rough seas, without the pounding that occurs with mono-hulls. This
provides a consistently dry and soft ride.
Catamarans hulls are more efficient than mono-hulls, requiring less power to maintain equivalent cruising speeds. You save money purchasing smaller engines to achieve the same level of performance.
Catamarans require less horsepower to reach cruising speed, delivering better fuel economy than a comparable mono-hulls.
Catamarans have a very shallow draft. This allows you to cruise in shallow waters where a typical mono-hull would run aground.
Catamarans have more usable deck space and beam than comparable sized mono-hull. This means that you have more room to move around on the boat.