Y. Kovtunenko, Liudmyla Cherniavska, O. Mitchuk, Y. Zahorodnia, Nataliia Tiapkina, V. Kostiuk
The sphere of sea tourism has massive potential for development; however, it requires the development of recommendations for effective organization. The primary research method is journalistic research, which allows for analysis of the subject of research from different angles and the use of additional data; in particular, the study results were based on official statistics, publications in reputable publishing houses, and the authors’ surveys and observations. The purpose of the article is to develop recommendations for the effective organization of maritime tourism. To achieve the goal, the authors analyzed the leading indicators of world statistics of sea tourism (on the example of cruises), identified the main trends and made forecasts that showed the study’s relevance. The authors also thoroughly conducted an analytical analysis of the subject of the study. They analyzed the global sea cruise industry market statistics, the prospects for the sea tourism market, and the impact of the COVID-19 pandemic on the cruise industry. The authors conducted a survey and analyzed the reasons and factors influencing the choice in favour of sea tourism. The study made it possible to propose a mechanism for the effective organization of sea tourism in the country, which was tested on the example of the Odessa region and proved to be effective.
{"title":"Improving the organization of maritime tourism","authors":"Y. Kovtunenko, Liudmyla Cherniavska, O. Mitchuk, Y. Zahorodnia, Nataliia Tiapkina, V. Kostiuk","doi":"10.31217/p.36.1.18","DOIUrl":"https://doi.org/10.31217/p.36.1.18","url":null,"abstract":"The sphere of sea tourism has massive potential for development; however, it requires the development of recommendations for effective organization. The primary research method is journalistic research, which allows for analysis of the subject of research from different angles and the use of additional data; in particular, the study results were based on official statistics, publications in reputable publishing houses, and the authors’ surveys and observations. The purpose of the article is to develop recommendations for the effective organization of maritime tourism. To achieve the goal, the authors analyzed the leading indicators of world statistics of sea tourism (on the example of cruises), identified the main trends and made forecasts that showed the study’s relevance. The authors also thoroughly conducted an analytical analysis of the subject of the study. They analyzed the global sea cruise industry market statistics, the prospects for the sea tourism market, and the impact of the COVID-19 pandemic on the cruise industry. The authors conducted a survey and analyzed the reasons and factors influencing the choice in favour of sea tourism. The study made it possible to propose a mechanism for the effective organization of sea tourism in the country, which was tested on the example of the Odessa region and proved to be effective.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41823254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Coast Guard Command, which has a wide range of duties as saving human lives, protecting natural resources, preventing marine pollution and battle against smuggling, uses diesel main engines in its ships, as in other military and commercial ships. It is critical that the main engines operate smoothly at all times so that they can respond quickly while performing their duties, thus enabling fast and early detection of faults and preventing failures that are costly or take longer to repair. The aim of this study is to create and to develop a model based on current data, to select machine learning algorithms and ensemble methods, to develop and explain the most appropriate model for fast and accurate detection of malfunctions that may occur in 4-stroke high-speed diesel engines. Thus, it is aimed to be an exemplary study for a data-based decision support mechanism.
{"title":"Evolved model for early fault detection and health tracking in marine diesel engine by means of machine learning techniques","authors":"Tolga Şahin, C. Imrak, Altan Cakir, Adem Candaş","doi":"10.31217/p.36.1.11","DOIUrl":"https://doi.org/10.31217/p.36.1.11","url":null,"abstract":"The Coast Guard Command, which has a wide range of duties as saving human lives, protecting natural resources, preventing marine pollution and battle against smuggling, uses diesel main engines in its ships, as in other military and commercial ships. It is critical that the main engines operate smoothly at all times so that they can respond quickly while performing their duties, thus enabling fast and early detection of faults and preventing failures that are costly or take longer to repair. The aim of this study is to create and to develop a model based on current data, to select machine learning algorithms and ensemble methods, to develop and explain the most appropriate model for fast and accurate detection of malfunctions that may occur in 4-stroke high-speed diesel engines. Thus, it is aimed to be an exemplary study for a data-based decision support mechanism.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43093282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Liner shipping, which offers the door-to-door transportation service, has pre-determined departure, arrival and transfer ports and carries cargo mainly through container ships, has been playing a key role in the global cargo transportation industry for more than 60 years and is still growing rapidly. Therefore, understanding of the relationship between service quality, customer satisfaction and behavioral intentions in liner shipping is of critical importance for global competition. From this standpoint, this study aims to determine whether customer satisfaction creates an alternative effect through its mediating effect on the causal relationship between core service quality and customers’ behavioral intentions in liner shipping sector. To do so, it obtains data through survey from forwarder companies that operate in Turkey and analyzes the obtained data using SPSS v22 and AMOS v22 statistical package software. This study concludes that core service quality has a positive effect on customer satisfaction and behavioral intentions, and that customer satisfaction has a mediating effect on the relationship between core service quality and behavioral intentions. It reveals that core service quality and customer satisfaction are important constructs for future behavioral intentions. In conclusion, this study suggests that business managers in liner shipping sector need to incorporate core services that will positively affect customer satisfaction in their marketing policies, and to engage in managerial activities that enhance customer satisfaction.
{"title":"Mediating effect of customer satisfaction on the relationship between core service quality and behavioral intentions in liner shipping","authors":"Murat Yorulmaz, A. Taş","doi":"10.31217/p.36.1.1","DOIUrl":"https://doi.org/10.31217/p.36.1.1","url":null,"abstract":"Liner shipping, which offers the door-to-door transportation service, has pre-determined departure, arrival and transfer ports and carries cargo mainly through container ships, has been playing a key role in the global cargo transportation industry for more than 60 years and is still growing rapidly. Therefore, understanding of the relationship between service quality, customer satisfaction and behavioral intentions in liner shipping is of critical importance for global competition. From this standpoint, this study aims to determine whether customer satisfaction creates an alternative effect through its mediating effect on the causal relationship between core service quality and customers’ behavioral intentions in liner shipping sector. To do so, it obtains data through survey from forwarder companies that operate in Turkey and analyzes the obtained data using SPSS v22 and AMOS v22 statistical package software. This study concludes that core service quality has a positive effect on customer satisfaction and behavioral intentions, and that customer satisfaction has a mediating effect on the relationship between core service quality and behavioral intentions. It reveals that core service quality and customer satisfaction are important constructs for future behavioral intentions. In conclusion, this study suggests that business managers in liner shipping sector need to incorporate core services that will positively affect customer satisfaction in their marketing policies, and to engage in managerial activities that enhance customer satisfaction.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47671460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The introduction of marine spatial planning (hereafter: MSP) for Croatia is essential, considering the coastline length and the increasing usurpation of coastal and marine space. MSP is more than a process that regulates the activities on the sea. It is an analytical approach to the setup of human activities in the marine area. As a maritime country, Croatia has ratified the Protocol on Integrated Coastal Zone Management and undertook the obligations of the Barcelona Convention. However, an appropriate document has not yet been made that would enable quality management of marine space. MSP and its onshore version contribute to the establishment and development of various activities, taking into account environmental, natural, economic, and sociological criteria. MSP is a continuation of spatial planning of the mainland area and must undoubtedly consider the more expansive coastal environment and the activities there. One of the tools in marine area mapping is the Geographic Information System (GIS), which has proven to be a very high quality and effective tool, especially in decision-making processes. The authors analyze the existing legal framework for marine spatial planning. Particular emphasis is placed on the obligations facing the Republic of Croatia to implement marine spatial planning. Given that the paper seeks to determine the advantages of MSP implementation using modern tools in marine area mapping, the authors in the third part discuss the benefits of using GIS as an acceptable tool in mapping marine space and provide recommendations for further actions.
{"title":"Marine spatial planning in Croatia","authors":"M. Kovačić, Biserka Rukavina, Lea Perinić","doi":"10.31217/p.36.1.2","DOIUrl":"https://doi.org/10.31217/p.36.1.2","url":null,"abstract":"The introduction of marine spatial planning (hereafter: MSP) for Croatia is essential, considering the coastline length and the increasing usurpation of coastal and marine space. MSP is more than a process that regulates the activities on the sea. It is an analytical approach to the setup of human activities in the marine area. As a maritime country, Croatia has ratified the Protocol on Integrated Coastal Zone Management and undertook the obligations of the Barcelona Convention. However, an appropriate document has not yet been made that would enable quality management of marine space. MSP and its onshore version contribute to the establishment and development of various activities, taking into account environmental, natural, economic, and sociological criteria. MSP is a continuation of spatial planning of the mainland area and must undoubtedly consider the more expansive coastal environment and the activities there. One of the tools in marine area mapping is the Geographic Information System (GIS), which has proven to be a very high quality and effective tool, especially in decision-making processes. The authors analyze the existing legal framework for marine spatial planning. Particular emphasis is placed on the obligations facing the Republic of Croatia to implement marine spatial planning. Given that the paper seeks to determine the advantages of MSP implementation using modern tools in marine area mapping, the authors in the third part discuss the benefits of using GIS as an acceptable tool in mapping marine space and provide recommendations for further actions.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42151457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The development of the hydrocarbon resources of the Kaliningrad Region shelf has been carried out systematically since the late 1980s. In the existing offshore oil and gas infrastructure of the region should be mentioned drilling platforms (C-9 and D-6), an underwater oil pipeline from the D-6 platform to the Romanovo oil collection point, the Pionersky marine regasification terminal. The experience of operating these infrastructure facilities shows that despite the low salinity of the Baltic Sea and the practical absence of ice conditions in this area, oil and gas infrastructure objects are subject to significant technical degradation. The existing offshore pipeline, which transports oil from the D-6 platform, is influenced by a complex of external factors, internal corrosion and erosion wear associated with sulphur compounds, oxygen, and the presence of abrasive particles. The study presents a factor analysis of the causes of corrosion wear of infrastructure oil and gas facilities on the shelf of the Kaliningrad region, analyses the dynamics of the processes of physical and chemical degradation of equipment surfaces. Various solutions of the reliability ensuring of these units in marine conditions are considered. The results of observations of corrosion and erosion processes in the oil and gas infrastructure of the Kaliningrad Region shelf should be taken into consideration during the development of project documentation and the selection of equipment and materials for new projects being implemented (offshore oilfield development project D-6 South and D-33).
{"title":"Survey of reliability of offshore oil and gas infrastructure in South Baltic conditions","authors":"P. Shcherban, Ekaterina Mazur","doi":"10.31217/p.36.1.8","DOIUrl":"https://doi.org/10.31217/p.36.1.8","url":null,"abstract":"The development of the hydrocarbon resources of the Kaliningrad Region shelf has been carried out systematically since the late 1980s. In the existing offshore oil and gas infrastructure of the region should be mentioned drilling platforms (C-9 and D-6), an underwater oil pipeline from the D-6 platform to the Romanovo oil collection point, the Pionersky marine regasification terminal. The experience of operating these infrastructure facilities shows that despite the low salinity of the Baltic Sea and the practical absence of ice conditions in this area, oil and gas infrastructure objects are subject to significant technical degradation. The existing offshore pipeline, which transports oil from the D-6 platform, is influenced by a complex of external factors, internal corrosion and erosion wear associated with sulphur compounds, oxygen, and the presence of abrasive particles. The study presents a factor analysis of the causes of corrosion wear of infrastructure oil and gas facilities on the shelf of the Kaliningrad region, analyses the dynamics of the processes of physical and chemical degradation of equipment surfaces. Various solutions of the reliability ensuring of these units in marine conditions are considered. The results of observations of corrosion and erosion processes in the oil and gas infrastructure of the Kaliningrad Region shelf should be taken into consideration during the development of project documentation and the selection of equipment and materials for new projects being implemented (offshore oilfield development project D-6 South and D-33).","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45422513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alen Jugović, Dea Aksentijević, Tomislav Budić, Renato Oblak
COVID-19 pandemic has brought difficult situations for the global economy and their economic activities. However, passenger traffic is one of the activities that has felt the impact of the pandemic the most. The movement of passengers was reduced to a minimum, and some forms of traffic were completely suspended. One such example is railway transport in the Republic of Croatia, whose activity was completely stopped in April 2020, which also affected the business of the company Croatian Railway Passenger Transport Ltd. In this paper, the authors will analyse the impact of coronavirus disease (COVID-19) on the mobility of passengers in national and international railway passanger transport of the Republic of Croatia.
{"title":"Impact of COVID-19 pandemic on passenger mobility in national and international railway traffic of the Republic of Croatia","authors":"Alen Jugović, Dea Aksentijević, Tomislav Budić, Renato Oblak","doi":"10.31217/p.36.1.17","DOIUrl":"https://doi.org/10.31217/p.36.1.17","url":null,"abstract":"COVID-19 pandemic has brought difficult situations for the global economy and their economic activities. However, passenger traffic is one of the activities that has felt the impact of the pandemic the most. The movement of passengers was reduced to a minimum, and some forms of traffic were completely suspended. One such example is railway transport in the Republic of Croatia, whose activity was completely stopped in April 2020, which also affected the business of the company Croatian Railway Passenger Transport Ltd. In this paper, the authors will analyse the impact of coronavirus disease (COVID-19) on the mobility of passengers in national and international railway passanger transport of the Republic of Croatia.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43169237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Croatian coastline, as well as various natural and man-made attractions in the Croatian hinterland, provide for a fairly well-developed tourism sector. Nacional marine ports play an increasingly important role in promoting and develoing the tourism sector. Zadar is the second largest domestic and international passenger port in the country and the third largest cruise port. In addition, the port serves several anchor clients in the dry bulk, liquid bulk and general cargo sectors. After analyzing Croatian ports of international economic interest in general, trends and developments in the port sector, and the destination states of Croatian ports, the authors in this paper focus on the segments of the Port of Zadar that are important for the development of tourism. The paper provides an overview of the current state, recommended targets and status of the Port of Zadar. Further, the paper predicts targets for passenger traffic (domestic, international and cruise) by 2030.
{"title":"Croatian ports of international economic interest with a focus on the tourisam development perspective of the Port of Zadar","authors":"Alen Jugović, D. Gračan, Marina Barkiđija Sotošek","doi":"10.31217/p.36.1.9","DOIUrl":"https://doi.org/10.31217/p.36.1.9","url":null,"abstract":"The Croatian coastline, as well as various natural and man-made attractions in the Croatian hinterland, provide for a fairly well-developed tourism sector. Nacional marine ports play an increasingly important role in promoting and develoing the tourism sector. Zadar is the second largest domestic and international passenger port in the country and the third largest cruise port. In addition, the port serves several anchor clients in the dry bulk, liquid bulk and general cargo sectors. After analyzing Croatian ports of international economic interest in general, trends and developments in the port sector, and the destination states of Croatian ports, the authors in this paper focus on the segments of the Port of Zadar that are important for the development of tourism. The paper provides an overview of the current state, recommended targets and status of the Port of Zadar. Further, the paper predicts targets for passenger traffic (domestic, international and cruise) by 2030.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49033022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A healthy symbiosis of local populations and tourists visiting is a prerequisite for the success of a tourist destination, but also for sustainable development of tourism. The local population directly affects the tourism in the destination, and vice versa, tourism is increasingly influencing the local population in sociological, cultural, and economic terms. The purpose of this work is to investigate the impact of tourism development on the quality of life of the locals in a tourist destination, to scientifically formulate the research results, and to propose implementation of measures for creating a balance between the needs of the locals, tourists, and other participants in a tourist destination. This work aims to investigate the attitudes of the local population on the development of tourism on the Elaphite Islands (Lopud, Šipan, and Koločep). Namely, the local population constitutes an important interest group, and the quality of the tourist product depends on their satisfaction with the development of tourism in situ, and their participation in the competitiveness of the tourist destination. In order to prove the above hypothesis, this work undertakes to analyse the results of the author’s primary research. The results of the research show that the local population supports the development of sustainable tourism as well as the overall progress of the Elaphites and, with the exception of some minor harmful effects on the environment that have been observed, the local population believes that tourism contributes to economic and social benefits of the destination. Such research should be conducted when developing plans for sustainable tourism of ta destination, active support of the local population being crucial for such development to be achieved.
{"title":"The impact of tourism development on the quality of life of the locals in a tourist destination","authors":"D. Gračan, Lovorko Lučić","doi":"10.31217/p.36.1.12","DOIUrl":"https://doi.org/10.31217/p.36.1.12","url":null,"abstract":"A healthy symbiosis of local populations and tourists visiting is a prerequisite for the success of a tourist destination, but also for sustainable development of tourism. The local population directly affects the tourism in the destination, and vice versa, tourism is increasingly influencing the local population in sociological, cultural, and economic terms. The purpose of this work is to investigate the impact of tourism development on the quality of life of the locals in a tourist destination, to scientifically formulate the research results, and to propose implementation of measures for creating a balance between the needs of the locals, tourists, and other participants in a tourist destination. This work aims to investigate the attitudes of the local population on the development of tourism on the Elaphite Islands (Lopud, Šipan, and Koločep). Namely, the local population constitutes an important interest group, and the quality of the tourist product depends on their satisfaction with the development of tourism in situ, and their participation in the competitiveness of the tourist destination.\u0000In order to prove the above hypothesis, this work undertakes to analyse the results of the author’s primary research. The results of the research show that the local population supports the development of sustainable tourism as well as the overall progress of the Elaphites and, with the exception of some minor harmful effects on the environment that have been observed, the local population believes that tourism contributes to economic and social benefits of the destination. Such research should be conducted when developing plans for sustainable tourism of ta destination, active support of the local population being crucial for such development to be achieved.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46429174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
When in 2019 the Act on Amendments to the Maritime Code came into force, the Register of ships was established as a single registration point for all maritime craft of Croatian nationality. Therefore, all ships, which previously had been entered in the boat ledger, were transferred to the Register of ships. At the beginning of 2020, when such a single Register of ships came into use, the Ministry of the Sea, Transport and Infrastructure issued a special Ordinance regulating the entry of ships into register, maximum permitted age and technical specifications for entry of ships into the Croatian Register of ships. At the end of 2020, the Ministry of the Sea, Transport and Infrastructure, in compliance with the Maritime Code, officially deleted from the Register of ships about 20,000 boats whose owners did not have harmonized data or did not have a correct or non-existent personal identification number (PIN). The Ordinance prescribes the procedure for re-entry of boats in the Register of ships, with special provisions relating to such cases. At the beginning of 2021, and after the official deletion of such boats from the Register of ships, the Ministry of the Sea, Transport and Infrastructure sent the Instructions on the procedure after the decision on the official deletion of maritime crafts to all Harbour Master Offices. The Instruction, inter alia, requires from the Harbour Master Offices to perform an occasional inspection of boats on the basis of their request for re-entry. The author considers such an Instruction disputable and considers that it does not correctly interpret the provisions on re-entry of ships in the Register after the official deletion of such boats from the Register of ships, more precisely that it does not properly interpret the provisions of a special Ordinance prescribing the mentioned procedure. Therefore, this paper gives an overview of the contested provisions as well as the corresponding interpretations in accordance with the Maritime Code and by-laws adopted on its basis.
{"title":"Interpretation of the provisions on re-entry of officially deleted boats in the register","authors":"N. Mandić","doi":"10.31217/p.36.1.15","DOIUrl":"https://doi.org/10.31217/p.36.1.15","url":null,"abstract":"When in 2019 the Act on Amendments to the Maritime Code came into force, the Register of ships was established as a single registration point for all maritime craft of Croatian nationality. Therefore, all ships, which previously had been entered in the boat ledger, were transferred to the Register of ships. At the beginning of 2020, when such a single Register of ships came into use, the Ministry of the Sea, Transport and Infrastructure issued a special Ordinance regulating the entry of ships into register, maximum permitted age and technical specifications for entry of ships into the Croatian Register of ships. At the end of 2020, the Ministry of the Sea, Transport and Infrastructure, in compliance with the Maritime Code, officially deleted from the Register of ships about 20,000 boats whose owners did not have harmonized data or did not have a correct or non-existent personal identification number (PIN). The Ordinance prescribes the procedure for re-entry of boats in the Register of ships, with special provisions relating to such cases. At the beginning of 2021, and after the official deletion of such boats from the Register of ships, the Ministry of the Sea, Transport and Infrastructure sent the Instructions on the procedure after the decision on the official deletion of maritime crafts to all Harbour Master Offices. The Instruction, inter alia, requires from the Harbour Master Offices to perform an occasional inspection of boats on the basis of their request for re-entry. The author considers such an Instruction disputable and considers that it does not correctly interpret the provisions on re-entry of ships in the Register after the official deletion of such boats from the Register of ships, more precisely that it does not properly interpret the provisions of a special Ordinance prescribing the mentioned procedure. Therefore, this paper gives an overview of the contested provisions as well as the corresponding interpretations in accordance with the Maritime Code and by-laws adopted on its basis.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42944348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, the interaction of fluid-structure with Ansys Fluent and Structural was analysed on a double-wall LNG piping system in a marine ship. In terms of simulations, the inner tube of the double-walled tube on the TSR-18008 ship designed by SU Ar-Ge Dizayn ve Mühendislik A.Ş. is considered. Two different simulations were made; the first analysis was a computational fluid dynamics analysis and the results obtained from this were imported into the finite element analysis also known as structural analysis and the structural analysis was undertaken together using these data. The mesh used in the simulations has 2,985,116 elements and 2,135,093 nodes. The inlet velocity of the gas is 6.5 m/s and the temperature value is 108 K as boundary conditions. Seventeen cylindrical support elements are used to ensure the strength of the Liquefied Natural Gas pipe system. Three different pipe materials, which are structural steel, stainless steel, and aluminium alloy, have been considered for the numerical structural analysis. The highest stresses were observed at the elbows and results were given using various contours including stresses, strains, temperatures and streamlines in these elbows.
本文利用Ansys Fluent和Structural软件，对某船舶LNG双壁管道系统进行了流固耦合分析。在仿真方面，采用SU - ge Dizayn - ve m hendislik A.Ş设计的TSR-18008船双壁管的内管。被认为是。进行了两种不同的模拟;第一个分析是计算流体动力学分析从中得到的结果被输入到有限元分析中也称为结构分析结构分析是使用这些数据一起进行的。模拟中使用的网格有2,985,116个元素和2,135,093个节点。边界条件为进气速度为6.5 m/s，温度值为108 K。17个圆柱形支撑元件用于保证液化天然气管道系统的强度。三种不同的管道材料，即结构钢，不锈钢和铝合金，已经考虑了数值结构分析。在弯头处观察到最高的应力，并使用弯头中的各种轮廓包括应力，应变，温度和流线给出结果。
{"title":"Analysing fluid-structure interaction with CFD and FEA on a marine double-wall LNG piping system","authors":"Alihan Cambaz, Yasin Furkan Gorgulu, Halit Arat","doi":"10.31217/p.36.1.6","DOIUrl":"https://doi.org/10.31217/p.36.1.6","url":null,"abstract":"In this study, the interaction of fluid-structure with Ansys Fluent and Structural was analysed on a double-wall LNG piping system in a marine ship. In terms of simulations, the inner tube of the double-walled tube on the TSR-18008 ship designed by SU Ar-Ge Dizayn ve Mühendislik A.Ş. is considered. Two different simulations were made; the first analysis was a computational fluid dynamics analysis and the results obtained from this were imported into the finite element analysis also known as structural analysis and the structural analysis was undertaken together using these data. The mesh used in the simulations has 2,985,116 elements and 2,135,093 nodes. The inlet velocity of the gas is 6.5 m/s and the temperature value is 108 K as boundary conditions. Seventeen cylindrical support elements are used to ensure the strength of the Liquefied Natural Gas pipe system. Three different pipe materials, which are structural steel, stainless steel, and aluminium alloy, have been considered for the numerical structural analysis. The highest stresses were observed at the elbows and results were given using various contours including stresses, strains, temperatures and streamlines in these elbows.","PeriodicalId":44047,"journal":{"name":"Pomorstvo-Scientific Journal of Maritime Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46052798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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