It is called a tri-hull and it basically looks like a W when you are looking at the front of the boat.
A trimaran has 3 hulls, a main hull and two smaller outrigger hulls.
A trimaran is a sailing yacht with three parallel hulls.
Trimaran
A Trimaran is a boat with three hulls.
Boat hulls are currently usually made of fiber glass. Fiber glass is the cheapest, most effective material. Boat hulls can also be made of wood, carbon fiber, and steel.
Trimaran
This type of boat is called a Catamaran.
Catamaran.
4
4
Tri-hull
There's no law against it, but it will slow your boat down.