This is because they face less water resistance and their narrow hulls dont have to deal with their own bow waves as a.
Which is safer catamaran or monohull. Due to their lighter weight multihulls tend to be faster and can sail better in lighter winds. That plus the fact that they keep their sails perpendicular to the wind means they sail faster than monohulls especially on a run or broad reach. A multihull substitutes its breadth or beam for the monohulls heavy keel.
But then so are well built monohulls. Although catamarans cannot sail as close to the wind as monohull sailboats most cats do sail faster than a monohull on a reach. It all comes down to personal preference and intended purposes but when its all said and done a catamaran has more advantages than a monohull.
On the up side there is room for a big crew and its kit much more fresh water tankage than a monohull eliminating the need for an expensive temperamental watermaker and finding. They do require a higher standard of engineering because of the greater stresses. Modern catamarans can do a 360 turn in their length.
Incidentally it makes it somewhat safer for kids running around. Catamarans have significantly shallower drafts than monohulls allowing for safer anchorages closer to shore. Catamarans have great maneuverability since most catamarans have twin engines they can be more comfortable to dock than a single engine monohull.
Without the need for a heavy keel catamarans are lighter than an equivalent monohull. In the shallow waters of the Bahamas for example the catamarans have a big advantage. Catamarans Are Faster Than Monohull Boats A catamaran is faster than the average monohull boat.
In theory no matter how much you heel gravity will not let the keel come out of the water in theory. The magnificent HH66 catamaran image thanks Sail Magazine. And well built catamarans.