Ship
A ship, craft, or boat, is a vessel that floats on water and is used as a means of transportation, defense, or recreation.
Types of ships
There are many different types of ships that all serve different functions. For instance, the United States Navy places orders for a specific type of ship, a warship, to be used for deployment of troops, artillery, and for it's own Naval Fleet.
Cruise ships are built for the purpose of travelling around the world's oceans, taking tourists and vacationers to warm climates for a period of time.
Ship construction
Ships are usually built at a shipyard; these facilities are specifically designed for the construction of large transportation vessels and as such are often located at ports as well, to perform maintenance and upkeep of the ship.