There's no set material for catamarans. They can be built out of just about anything, wood, plastic, metals.
they do not float
catamarans are the most popular boats
Hobie Cats are VERY popular.
Monohull, catamarans, and trimarans.
Catamarans are good for sailing in shallow waters
Catamarans.
Sea. It's a type of boat.
20 knots upwind, 33 knots downwind.
Usually fiberglass or wood, but there are catamarans whose hulls are constructed of cement.
The aztecs used catamarans , argosys and pontos marias and forlows
Average speed is about 18 knots, depending on the type, structure etc