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This article is about a type of boat or ship. For the pharmacy benefit management company, see Catamaran Corporation.


A Formula 16 beachable catamaran

Powered catamaran passenger ferry at Salem, Massachusetts, United States.
A catamaran (/ˌkætəməˈræn/) (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".[1]

Catamarans typically have less hull volume, higher displacement, and shallower draft (draught) than monohulls of comparable length. The two hulls combined also often have a smaller hydrodynamic resistance than comparable monohulls, requiring less propulsive power from either sails or motors. The catamaran's wider stance on the water can reduce both heeling and wave-induced motion, as compared with a monohull, and can give reduced wakes.

Catamarans range in size from small (sailing or rowing vessels) to large (naval ships and car ferries). The structure connecting a catamaran's two hulls ranges from a simple frame strung with webbing to support the crew to a bridging superstructure incorporating extensive cabin and/or cargo space.


The Tamils (Cholas) were the first to use Wootz steel strips for ship building since 300-bc. Madagascar is the remains of the sunken continent of Lemuria which see saws with the Sahara. The Sahara rises and Lemuria sinks, a cycle of about 3,600-years. West of Madagascar lie the gold fields and stone circles in S.Africa, also with Tamil remains. North West of the stone circles lies the remains of Atlantis (Mauritania, today). Above Atlantis lies the 1,000-long fossil of a dragon called the Atlantis ridge, (Morocos). Look up Google earth to have a clear view of the dragon.

Mudfossil remains of a dragon above Atlantis.