Ключевые слова: 2021, balkan peninsula, balkans, barge, barge on the danube, belgrade, beograd, boat, capital, cargo, cargo ship, city, company, construction, cruising, danube, danube river, deliver, dock, dunav, energy, engine, engineering, europe, floating, fluvial, industrial, industry, kargo, landscape, mobility, navigation, navigation on the danube, oil, panorama, river, serbia, serbian, ship, shipping, shop, srbija, tanker, town, traffic, transport, transportation, travel, vessel, water,