All these lines (and also the minor lines from Golfo degli Aranci to La Maddalena and from Carloforte to Porto Vesme and Calasetta) are in the hands of the Navigazione Generale Italiana, there being no Sardinian steamship companies.
It was possibly visited by Genoese navigators in 1291, and was certainly discovered by the Portuguese c. 1446, but was first explored for any distance from its mouth (1455) by the Venetian Alvise Cadamosto (q.v.), who published an account of his travels at Vicenza in 1507 (La Prima Navigazione per l'Oceano alle terre de' Negri della Bassa Ethiopia) .
Palermo, Messina and Catania are the most important harbours, the former being one of the two headquarters (the other, and the main one, is Genoa) of the Navigazione Generale Italiana, and a port of call for the steamers from Italy to New York.
Ramusio, Navigazione (vol.
Palermo is one of the two headquarters (the other being Genoa) of the Navigazione Generale Italiana, the chief Italian steamship company.