I want to get a houseboat. It is a boat designed to be used as a home.
That's a very cool concept.  Can they actually be used as boats though?
Houseboat
A houseboat (different from boathouse, which is a shed for storing boats) is a boat that has been designed or modified to be used primarily as a home. Some houseboats are not motorized, because they are usually "moored", kept stationary at a fixed point and often tethered to land to provide utilities. However, many are capable of operation under their own power. "Float house" is a Canadian and American term for a house on a float (raft); a rough house may be
Craft (PCF), also known as a "Swift boat." These 50-foot boats have aluminum hulls and have little or no armor, but are heavily armed and rely on speed. "I didn't really want to get involved in the war," Kerry said in a book of Vietnam reminiscences published in 1986. "When I signed up for the swift boats, they had very little to do with the war. They were engaged in coastal patrolling and that's what I thought I was going to be doing