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…
The first part of this paper presents the review on most authoritative studies in the field of sustainable development and green logistics, as well as a new approach to achieve the goals of sustainable development in the operation of logistics and transport systems. The second part reflects the results of systematisation of methods and instruments…
This article describes the different taxation systems regarding the entry of commercial ships into the ports of the North-Adriatic countries (namely Italy, Slovenia, Croatia). The taxes taken into consideration are largely known as light dues (or occasionally anchorage dues) and are based on the vessel, irrespective of the cargo discharged at the port and of…
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…
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.…
Transportation of containers, in areas which are not interesting for large shipping operators, can pose a problem for ship cargo officer due to limited logistical assistance from ashore. In such cases, all calculations and planning have to be done on board the ship. Transportation between secondary ports to other-final ports, e.g. for servicing ports in…
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…
The main tasks for which the genetic algorithm is currently applied in shipbuilding are shown. The possibility of applying the genetic algorithm for determining the optimal characteristics of ships at the initial stages of design is considered.The formulation of the problem of parametric optimization for the initial stages of design is given. The features of…
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…