Big Data in the Maritime Industry

Maritime industry is a complex system that requires a quick adaptation to changing conditions and in which decision-making needs to take into account a large number of parameters. As navigation systems become more advanced, there is a significant amount of ship performance and navigation data generated. Big Data analytics tools make it possible to analyze…

Research on Relationship between Freight Transport Performance and GDP in Slovakia and EU Countries

The paper deals with developments in gross domestic product (GDP) and transport performance in freight transport in EU countries, measurement and performance reporting. The authors examine the correlation between freight transport performance and EU GDP. Correlation relationships are examined for absolute and relative values of the indicators. According to the period, relationships are divided into…

Exergy Analysis of Steam Pressure Reduction Valve in Marine Propulsion Plant on Conventional LNG Carrier

Paper has presented an exergy analysis of steam pressure reduction valve, unavoidable element in the steam propulsion plant on LNG carrier. The steam pressure reduction valve was analyzed in a wide range of steam system loads. Along with pressure decrease, through the valve also occur decrease in steam temperature and increase in steam specific entropy.…

Experimental Analysis of the Performance of the Eco-Friendly R510A and R600a Refrigerants in a Retrofitted Vapour Compression Refrigerating System

Halocarbon refrigerants have been scheduled for total phase out because they contributed significantly to the two major global environmental problems – ozone layer depletion and global warming.In this study, the performances of the environmentally friendly R510A and R600a in a retrofitted domestic refrigerating system were investigated experimentally and compared with the performance of R134a. The…

Editorial

The journal „Our Sea“ is celebrating its 99.th year of the appearance and the beginning in 1919. After a short existence of only two years, the period of long interruption occurred and the Journal reappeared in 1954. It is now the 64.th year of its continuous existence. It has been a long and turbulent period. There are quite…