The Republic of Croatia is located at the crossroads of Central Europe and the Adriatic Sea. Also, Croatia is known as a country with developed network of the inland waterways which are insufficiently used. Because of the flows of the Danube, Sava and Drava rivers, Croatia is part of the Danube corridor. Listed rivers are of international significance and are part of the European waterways network. The subject of this thesis and its attention is on the current state of the ports on the Sava river, and its general and touristic developments through several projects. Four projects have been chosen for this thesis that are in the phase of the implementation. Also, a plan of the waterway renewal, constructing Slavonski Brod and Sisak ports, and the possible II development of the inland waterways’ rivers tourism are described. The Republic of Croatia has recognized the opportunities offered by programs and European funds, and therefore river traffic is actively developing. With the modernization of inland waterways and port systems, the Republic of Croatia is developing and becoming competitive with other developed countries, and major projects ensure its stability and active development of the transport sector.