This type of boat is called a Catamaran.
It has 2 hulls.
2
2
2
The majority of sailboats have monohulls, but world circumnavigators seem to prefer trimaran hulls for their innate stability.
Hulls are on ships not in ponds.
rough waters
Yes. it has two hulls- one on an extension, in a sense a forerunner of pontoon boats or floats used on seaplanes, or catamarans, which have two hulls.
shallow water
shallow water
In rough water