The Dubrovnik to Bari or Bari to Dubrovnik ferry is one of the most popular ferry lines connecting Croatia and Italy. Also important to note is that Bari, located in the Apulia region of Italy , is a major commercial center and port, serving as a major ferry transportation hub for those leaving Italy to visit neighboring countries, such as Croatia and Greece.

http://www.dubrovnik-online.net/english/dubrovnik-bari-italy-ferry.php