Socialist Federal Republic of Yugoslavia
Regarding rivers, the Danube was navigable throughout its entire course in Yugoslavia, linking the ports of Belgrade, Novi Sad, and Vukovar with Central Europe and the Black sea. Long stretches of rivers Sava, Drava and Tisza were also navigable.
Danube–Black Sea Canal
For much of the 1950s, the Danube – Black Sea Canal was celebrated in agitprop literature (notably, in Geo Bogza's 1950 reportage "Începutul epopeii", "The Beginning of the Epic", and in Petru Dumitriu's "Drum fără pulbere", "Dustless Road"), music (Leon Klepper's symphonic poem "Dunărea se varsă în mare", "The Danube Flows to the Sea"), and film (Ion Bostan's 1951 "Canalul Dunăre-Marea Neagră, o construcție a păcii" – "The Danube – Black Sea Canal, a Construction of Peace"). During the 1980s, the song "Magistrala Albastră" (The blue freeway), performed by Dan Spătaru and Mirabela Dauer and using the Canal as its setting, was frequently broadcast in official and semi-official contexts.