This thesis examines the activity of the Maritime Inspectorate, a body of the Military Administration of the Yugoslav Army in the post-war reconstruction of the port of Rijeka, through the analysis of archival funds: “Inspektorat pomorstva Vojne uprave Jugoslavenske armije za Julijsku krajinu, Istru, Rijeku i Slovensko primorje (VUJA) – Rijeka (1945. – 1947.)” and “Gradski narodni odbor Rijeka (1945. -1947.)”. The aim of this thesis is to show how the port of Rijeka, part of zone B, was restored under the Maritime Inspectorate from its establishment in September 1945 until its liquidation in March 1947. After the historical context of the end of the Second World War in Rijeka, with special emphasis on the first post-war months and war damage, the thesis analyzes the restoration of one of the key economic factors of the port Rijeka. The specifics of the reconstruction under the military administration are described and analyzed, as well as the problems that arose. The topic of changing the names of piers, banks and breakwaters and media engagement and money are some of the aspects that try to show the micro-level of reconstruction as part of the macro-issue, that is, the issue of joining Rijeka to the rest of Yugoslavia and unification with Sušak. The Inspectorate supported the idea of uniting Rijeka with the rest of Yugoslavia with specific procedures even before the official signing of the Paris Peace Treaty in 1947.