Ships are built in shipyards. Shipyards are located in most large seaports so that when a ship is built it can safely navigate to sea.
Clipper ships were built on shipyards in several countries.
The Spanish ships for the Armada were primarily built in shipyards located in cities such as Lisbon, Seville, and Bilbao. These cities had the resources and expertise necessary for constructing the large galleons and warships needed for the fleet.
They were called shipwrights
The Union.
The RMS Titanic and her sister ships, Olympic and Britannic, were built at the Harland and Wolff shipyards in Belfast, Northern Ireland. http://en.wikipedia.org/wiki/RMS_Titanic
Henry Kaiser became known during the second World War as the father of modern ship building. He established Kaiser Shipyards and built the Liberty Ships during the war.
US and Canadian shipyards produced 2,710 Liberty Ships for the war effort.
According to wikipedia modern cruise ships are primarily build by the following three European and one Asian ship yards:The construction market for cruise ships is dominated by three European companies and one Asian company:STX Europe of Norway with two shipyards: STX Europe (the former Aker Yards/Kvaerner Masa-Yards/Wärtsilä, Valmet and Rauma Shipyards) in Finland.Aker Yards France (Chantiers de l'Atlantique) in France.Fincantieri of Italy.Meyer Werft of Germany.Mitsubishi Heavy Industries of Japan.A large number of cruise ships have been built by other shipyards, but no other individual yard has reached the large numbers of built ships achieved by the four above. A handful of old ocean liners also remain in service as cruise ships. Despite the dominance of United States-based cruise ship operators and American clients in the industry, only one ship built in the United States, The Emerald, is still sailing.[citation needed]source: http://en.wikipedia.org/wiki/Cruise_ship
They are used in shipyards to launch completed and repaired ships on what are called shipways- do not confuse with floating and floodable dry docks- which will float out ships when gates are open.
the Vikings ships were built with wood , and trees
the ships names were unknown.