Retrofitting of Danube vessels for a green and efficient fleet

The following paper presents a research study based on the idea of reducing the environmental impact of inland waterway vessels by resorting to state-of-the-art technologies for treating the exhaust gases. The paper summarizes an analysis into the feasibility of retrofitting existing ships so as to comply with Stage V, the latest emission norms of the European Commission. Several types of river pushers were analyzed for the case study in order to reach a proper understanding of the implications of installing a new engine and after treatment system. The solutions proposed by engine manufacturers for compliance with the norms were analyzed and suitable engines were identified for the selected vessels, with the goal being to minimize the modifications required on-board. Based on the information obtained, a detailed analysis into the structural, piping, machinery, outfitting and electrical impact was made.