The draft of a boat is how far in the water it goes.

Draft catamaran meaning. A pontoon boat has a fairly shallow draft which means it can access much shallower water than a deep draft boat like a v-hull for example. Access Catamarans especially the lagoon catamaran have a shallow draft and can therefore go through shallow waters that the monohull cannot. 18 32 Draft.

Manufacturing excessively wide catamarans is like trying to market monohulls with super deep-draft keels. Another important factor is draft. Moreover the shallower draft and hull design means you can beach a catamaran in case you need to perform some emergency maintenance like a leaky thru-hull.

Monohulls by definition require a keel a heavy piece of iron or lead that goes deep into the water. The shallow draft is especially appealing allowing for use in shallow water and giving the captain the option to pull the boat right up to shore without worry. A boats draft refers to the vertical distance from the waterline where the hull touches the water to the bottom of the hull or keel on a sailboat.

Catamarans typically have less hull volume smaller displacement and shallower draft draught than monohulls of comparable length. Catamaran hulls are noted for having less volume lighter displacement and shallower draft ie less of the boat is below water when compared to monohull vessels. Often getting in close means better protection and a safer more comfortable anchorage.

As for draft and beam back in the 90s when the RAN were looking at OPV concepts and designs one of them was from Incat who make those big North Sea wave piercing catamaran ferries. In comparison to sailboats catamarans draft is 1 12 meter in comparison to the sailboats whose drafts are 19 23 meters long. 25 45 Motor Yacht.

It is a geometry-stabilized craft deriving its stability from its wide beam rather than from a ballasted keel as with a monohull boat. The two hull design of a catamaran gives the boat a lot of stability in the water and with a draft that is less than 3 feet it is ideal for shallower open water areas. They were quite interested in Incat design because of its capability to operate a helo and still operate in extremely shallow water so Im somewhat dubious that a really big cat would have a much deeper draft.