THE EARLIEST SHIPS
Local workers build a boat in Giza, Egypt. The boat is quite similar to those used in ancient Egypt, which were made out of papyrus stalks bunched together. Many people believe Egyptians used this kind of boat to sail to America.
A yacht (From Dutch Jacht meaning "hunt") pron. [Iacht or Iat] was originally defined as a light, fast sailing vessel used by the Dutch navy to pursue pirates and other transgressors around and into the shallow waters of the Low Countries. After its selection by Charles II of England as the vessel of choice to return to Britain from the Netherlands for his restoration, it came to be used to convey important persons (see under History below).
Research vessels carry out a number of roles at sea. Some of these can be combined into a single vessel, others require a dedicated vessel. Fisheries science requires platforms which are capable of towing a number of different types of fishing net, collecting plankton or water samples from a range of depths, and carrying acoustic fish-finding equipment.
An aircraft carrier is a warship designed to deploy and recover aircraft — in effect acting as a sea-going airbase. Aircraft carriers thus allow a naval force to project air power great distances without having to depend on local bases for land-based aircraft.