A catamaran (/ ˌ k æ t ə m ə ˈ r æ n /) (informally, a "cat") is a multi-hulled watercraft featuring two parallel hulls of equal size. It is a geometry-stabilized craft, deriving its stability from its wide beam, rather than from a ballasted keel as with a monohull sailboat. Catamaran is from a Tamil word "Kattumaram" which means logs tied together.
Historically the ketch was a northern European square-rigged vessel, often a freighter or fishing boat, particularly in the Baltic and North seas. Nowadays, a ketch tends to be a fore-and-aft rigged pleasure yacht, similar to a yawl; but a ketch's mizzen mast is taller and its mizzen sail is larger than a yawl's.
The lone trimaran in the American Sailboat Hall of Fame, the versatile Corsair F-27 employs designer Ian Farrier’s ingenious folding ama system, which allows the dual-purpose racer/cruiser to be trailered, to fit in a standard marina slip, and to be easily rigged for sailing in minutes flat. Click here to see the Corsair Cruze 970.