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Scientific Journals of the Maritime University of Szczecin,
Zeszyty Naukowe Akademii Morskiej w Szczecinie



 

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ISSN 1733-8670 (Printed)
ISSN 2392-0378 (Online)
DOI PREFIX 10.17402

The Scientific Journals (SJ) issued by the Maritime University of Szczecin (MUS) is a magazine which presents results of MUS research and educational activities. SJ has been published since 1973 but in 2004 it changed the ISSN from 0209-2069 to 1733-8670 as a result of MUS changing its name from Wyższa Szkoła Morska w Szczecinie to Akademia Morska w Szczecinie.

At the beginning there were several papers published in SJ and they were connected with maritime affairs. Doctoral and habilitation theses had also been published then. With time the SJ scope expanded to among others nautical issues, operation of the vessel, marine power plant operation. The magazine presented also symposium and conference proceedings.

Since 2008, the magazine has been published in A4 format with a new layout. Since 2010 the journal has been publishing the articles in English. By the end of 2014 a total of 112 Scientific Journals will have been published.

The SJ Scientific Board ensures high quality of published papers. All papers are reviewed confidentially and anonymously (double blind review) and are a subject of scientific edition.

The Scientific Journals printed version is primary.

http://scientific-journals.eu/

List of Issues

Recent Submissions

  • Jasionowski, Robert (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Dear Readers, At the beginning of this issue 59(131), I would like to pass on an important message to all of our readers. On 31 July 2019, the Ministry of Science and Higher Education published a communiqué concerning the list of scientific journals and peer-reviewed materials from international conferences with a number of points assigned. The Scientific Journals of the Maritime University of Szczecin were submitted for evaluation by the Ministry of Science and Higher Education in three disciplines: 1) civil engineering and transport, 2) mechanical engineering, 3) environmental engineering, mining and energy, and received 20 points based on the opinion of the advisory panels. As Editor-in-Chief of the Scientific Journals of the Maritime University of Szczecin, I have made it my goal to develop the journal by attracting new authors and publishing high-quality scientific papers. To achieve this, I have decided to expand the subject matter of this journal. From the next issue 60(132) onwards, scientific papers will be published in the following thematic groups: – mechanical engineering; – civil engineering and transport; – environmental engineering, mining and energy; – automation, electronic and electrical engineering; – information and communication technology; – management and quality studies; – miscellaneous. Expanding the subject matter of the scientific papers will make the quarterly Scientific Journals of the Maritime University of Szczecin an interdisciplinary publication. In the future, this should increase the standing of our quarterly publication on the national and international arenas and allow us to obtain a higher score in the next list of the Ministry of Science and Higher Education, which is to be published in two years. In this issue of MUS Scientific Journals, we present the results of nineteen studies published in four disciplines: Marine Technology and Innovation, Navigation and Maritime Transport, Transport Engineering, and Miscellaneous. Marine Engineering & Innovation contains three articles. The author of the first paper presents the effectiveness of WHR hydrogen technology and a mathematical model of a relevant system intended to increase the efficiency of a ship power plant. The next paper presents issues related to recycling watercraft and the benefits of such undertakings for the natural environment and economy. The third paper presents the results of hardness tests of laminated composites reinforced with crushed polyester-glass recyclate. 6 Scientific Journals of the Maritime University of Szczecin 59 (131) In the second section, Navigation and Maritime Transport, there are two articles. The first one covers issues related to the mathematical optimization of the shift schedules of a ship’s crew. In the second paper, the authors present very interesting findings of research on modelling an unmanned vessel equipped with ecological electric drive. The third section, Transport Engineering, contains ten articles. The authors of these papers address issues related to the organization and management of transport engineering in sea ports and the significance of inland waterways in transport systems and the transport’s impact on the maritime economy. In this section, the reader will also find papers on inland tourism, integrated transport, and the environmental impacts of the latter. The fourth section, Miscellaneous, contains four articles. The first paper presents an analysis of how the GDP dynamics in the EU from 2009-2018 were influenced by intellectual property development expenditures. Another paper studies the use of a participatory budget as a tool to support sustainable urban development. The third article presents the findings of studies on the production of the lipase enzyme from Pseudomonas Aeruginosa used in biotechnological processes. In the last paper, the author presents legal issues concerning plastics polluting marine environments. All readers are invited to visit our website http://scientific-journals.eu, where, in the near future, they will find information about expanding the subject matter of papers published in the Scientific Journals of the Maritime University of Szczecin. All information on the article publication process and full texts of articles from this issue 59(131) and previous issues will be published at this site, as well. Robert Jasionowski, PhD Editor-In-Chief Szczecin, 30.09.2019
  • Cherednichenko, Oleksandr; Tkach, Mykhaylo; Timoshevskiy, Boris; Havrysh, Valerii; Dotsenko, Serhii (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Due to environmental, energy, and operating cost constraints, the number of liquefied natural gas (LNG)–powered ships is increasing. To avoid decreasing the thermal efficiency of two-stroke, low-speed diesel engines, high-pressure gas injection is used. The specific energy consumption of a gas fuel compressor is around 0.35 kWh/kg, which has a negative impact on the efficiency of ship power plants. To reduce the primary energy consumption of a gas fuel supply system, waste heat recovery (WHR) technologies may be used. This study investigated whether WHR metal hydride technology was suitable for improving the efficiency of low-grade heat waste in marine diesel engines. The key factors of this technology were revealed, and the design scheme was described. Working fluids were also analyzed, and a mathematical model of a WHR metal hydride plant was developed, and the results were represented. The calculations showed that the above technology could increase the operating power of a propulsion plant by 5.7–6.2%. The results demonstrate the possibility of applying WHR metal hydride equipment for gas fuel compressor drives in LNG-powered ships. The novelty of this study lies in the investigation of metal hydride technology for application in the waste heat recovery systems of LNG-powered ships.
  • Nyka, Maciej (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Ships are valuable sources of steel and other natural resources which can potentially be recycled and reused for economic and environmental benefits, and between 700 and 1000 ships are scrapped annually. On the other hand, up to 5% of the mass of a ship is dangerous wastes. Developed states and the European Union have introduced restrictive regulatory measures to regulate the conditions and locations of ship scrapping facilities. Despite the environmental benefits, these regulations may lose their battle for efficiency due to Asian countries which are engaged in a regulatory race to the bottom to attract ship owners to scrap their ships in their territories. The findings of this research indicate that despite being included in international and EU laws on ship scrapping, the specific instruments to prevent the movement of ship scrapping into the jurisdictions with low environmental standards are ineffective. A new global regulatory instrument is required which can find a balance between strict environmental protections and the economic interests of both the ship owner, companies engaged in ship scrapping, and countries which take economic advantage of those processes.
  • Panasiuk, Katarzyna; Kyzioł, Lesław; Abramczyk, Norbert; Hajdukiewicz, Grzegorz (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The attractive characteristics of polyester-glass composites have led to their use in many industries, but using them as structural elements requires knowing their mechanical properties. This paper presents processing methods of polyester and glass scrap and their use in the production of new composites. This scrap, called the recyclate, was pre-crushed, ground, and then passed through sieves to obtain the desired fractions. Composite materials with added recyclate were made by hand lamination. Composites were made and then used to conduct appropriate tests to determine the degree of cure of the resin, and to determine the effect of the polyester- glass recyclate content on the hardness of composites. For this purpose, rectangular panels with a thickness of g = 8 mm were produced by manual lamination. Each plate contained 0% glass mat, 10% resin, and 20% recyclate with granulation ≤ 1.2 mm and ≤ 3 mm. Then, test samples were formed from each plate. Hardness measurements were performed using the ball-pressing method. In addition, structural studies were carried out to determine the correlation between the structural and mechanical properties of the discussed materials. The obtained test results showed that the recyclate content and its granulation clearly affected the mechanical properties of the tested composite materials.
  • Bošnjak, Rino; Bukljaš, Mihaela; Medić, Dario; Vukša, Srđan (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    Seaborne shipping must often cope with issues related to planning, ship scheduling, and arranging crews and optimal shipping routes between ports. Human resources departments typically plan ship crew shifts with regards to the seafarers’ right to vacation days. It is difficult to harmonize all the requirements and to satisfy both the seafarers and the company. Ideally, arrangements are made for the crewmember to sign off upon completion of a contract, with the vessel being at a port convenient to change the crew at a minimum cost. The latter may vary greatly, depending on the size of the crew to be replaced, the distance of the port from the crew destination, and the available taking-over crew at a specific place and time, etc. In these situations, linear programming (LP) is frequently used as a mathematical method to determine the optimal results. This study suggests the use of a linear-binary programming model in LINGO software to arrange the ship’s crew change schedule.
  • Szelangiewicz, Tadeusz; Żelazny, Katarzyna (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    As part of this research, an experimental model of an unmanned ship equipped with an ecological electric drive was built. Ultimately, the ship model was equipped with an on-board computer with appropriate software for autonomous control. A computer simulator was used to test the control software. This article presents the concept of such a simulator, a general mathematical model of the movement dynamics of an unmanned vehicle, a description of the propulsion system, and the tasks planned for implementation in a computer simulator.
  • Bernacki, Dariusz; Lis, Christian (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    This study aims to identify and quantify the economic benefits of eliminating collisions between two transport systems: rail and inland waterway transport. The collision between transport systems is caused here by the obsolete structure of a railway drawbridge, which constitutes an element of the railway line used by freight and passenger transport and is located on the main inland waterway used by inland waterways freight transport. Railway transport results in limitations of inland waterway transport and, vice versa, inland waterways transport blocks railway transport during lifting of the bridge span. In the case of railway transport, the low capacity of the single-track railway bridge constitutes an additional limitation of the development of transportation. There are plans to eliminate the collision in the regional transport system by constructing a new railway bridge in place of the old drawbridge. The effects of the transportation infrastructure improvement were measured directly for both rail and inland water freight systems as well as the result of the interaction between passenger rail and car and bus transport. In order to compare the different types of impact, the effects of different actions were valued in monetary terms. The planned intervention, as investigated here, will lead to reductions in the cost of time of inland waterways freight transport and costs of time of rail passenger and freight transport and a decrease in the external costs of transport. This will make possible transportation services that are both cheaper and more reliable.
  • Bernacki, Dariusz; Lis, Christian (Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Akademia Morska w Szczecinie, )
    The aim of this paper is to identify and quantify the direct economic effects resulting from navigational restoration of the Dąbie Lake inland fairway, a part of the West Pomeranian region (PL) transport system that runs across the Dąbie Lake. This narrow and shallow inland fairway constitutes the bottleneck for inland waterway freight transport, which must therefore use the sea fairway and thereby incur extended time, increased cost, and reduced efficiency of inland waterway transport. The paper’s second section presents the transport and microeconomic effects that restoring the fairway’s navigability across Lake Dąbie would have on the inland navigation system, thereby increasing the capacity, effectiveness, and safety of inland waterways freight traffic. Restoration of the inland fairway would significantly reduce generalized and external costs of inland waterways transport.

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