{"title":"DC-grid system for ships: a study of benefits and technical considerations","authors":"Kyunghwa Kim, Kido Park, Gill-tae Roh, K. Chun","doi":"10.1080/25725084.2018.1490239","DOIUrl":"https://doi.org/10.1080/25725084.2018.1490239","url":null,"abstract":"ABSTRACT The primary electric power system of ships has been based on the alternating current (AC) system for a long time. However, marine engineers started to question the efficiency of the AC-grid system, which was previously taken for granted and attempted to find a more efficient and eco-friendly electric power distribution system. Following this trend in the marine industry, the direct current (DC) system was adopted for the electric distribution system in ships and combined with the AC-grid. In this regard, this paper presents the technical, economic, and environmental benefits of the DC-grid system for marine applications. Ships that have already applied or plan to apply the DC-grid system are categorized into several types. Additionally, some technical considerations focused on the fault protection topology, the power-sharing (balancing) topology, power quality/stability issues, power source control methods, DC arc flash hazard, and international regulations/standards regarding DC-grid ships are reviewed. Lastly, the prospects of the DC-grid system in ships are addressed with a conclusion.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131512389","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}
{"title":"Non-entry into force of the Hong Kong International Convention for the Safe and Environmentally Sound Recycling of Ships, 2009: An analysis from the perspective of India, Pakistan and Bangladesh","authors":"Shreya Mishra","doi":"10.1080/25725084.2018.1490240","DOIUrl":"https://doi.org/10.1080/25725084.2018.1490240","url":null,"abstract":"ABSTRACT The importance of ship-breaking industry cannot be underestimated in the developing countries, where a majority of the world’s dead ships is exported for getting recycled. The five countries which recycle the maximum number of ships are India, Pakistan, Bangladesh, China, and Turkey. Only Turkey among these has ratified the IMO (International Maritime Organisation) Hong Kong International Convention for the Safe and Environmentally Sound Recycling of Ships, 2009, which has not yet entered into force. The Hong Kong Convention presents a comprehensive legal framework comprising of provisions for various stages involved in ship-breaking. The sooner it enters into force, the better it will be for the ship-recyclers and ship-owners. India, Pakistan, and Bangladesh together recycle over 90 per cent of the tonnage, but many obstacles hinder India, Pakistan, and Bangladesh from becoming parties to the Convention. This paper analyses why it is imperative for India, Pakistan, and Bangladesh to become parties to the Convention. Further, it discusses the various environmental and social hazards associated with ship-breaking at ship-breaking yards within the three countries, with particular emphasis on the debate surrounding the method of “beaching”. Lastly, the paper discusses various sustainable solutions that could possibly form part of a transitional phase, which might give these countries the desired timeline for adapting to globally acceptable standards and eventually paving the way for ratification of the Convention.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115571076","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}
Jing Du, Yu Jiang, Kun Wang, Guangjun Song, Jing Wu, Lun Song, Jin-hao Wu, Jin Tian, Zhiqiang Ma
{"title":"Evaluation of pilotage dispatching operation for Dalian Port in China based on FCE–AHP method","authors":"Jing Du, Yu Jiang, Kun Wang, Guangjun Song, Jing Wu, Lun Song, Jin-hao Wu, Jin Tian, Zhiqiang Ma","doi":"10.1080/25725084.2017.1419786","DOIUrl":"https://doi.org/10.1080/25725084.2017.1419786","url":null,"abstract":"Abstract Objective: The continuous expansion of the port with the critical shortage for maritime pilots and vessels calls for an effective pilotage dispatching operation, which can ensure the timely delivery of information and rational utilization of pilotage resources. But how to evaluate the effectiveness of the pilotage dispatching operation for a port has been studied little internationally. Thus, a hybrid model of fuzzy comprehensive evaluation (FCE) and analytic hierarchy process (AHP) is set up in this paper for effectiveness evaluation of the port pilotage dispatching operation. Method: A comprehensive evaluation index system is designed by AHP method while FCE method based on anti–fuzzy method is formulated for assessing the effectiveness of pilotage dispatching operation. Moreover, pilotage dispatching system assessment of Dalian Port in China is presented as a case. Results: FCE–AHP method is suitable for effectiveness evaluation of pilotage dispatching system, and the pilotage dispatching system of Dalian Port is better than “general” and close to “good” obtained by anti–fuzzy method. Conclusion: FCE–AHP method is validated its feasibility for effectiveness evaluation of the port pilotage dispatching operation and more related parameters will be considered in the further study.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131851710","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}
Young-Soo Park, Jin-Soo Park, Daewoon Shin, Myoung-ki Lee, Sangwon Park
{"title":"Application of potential assessment of risk (PARK) model in Korea waterways","authors":"Young-Soo Park, Jin-Soo Park, Daewoon Shin, Myoung-ki Lee, Sangwon Park","doi":"10.1080/25725084.2017.1412916","DOIUrl":"https://doi.org/10.1080/25725084.2017.1412916","url":null,"abstract":"Abstract Korean coastal waterways are potentially the most dangerous zones for marine accidents owing to a high volume of traffic, irregular traffic patterns of fishing vessels, frequent ship encounters, and narrowness of navigable area because of offshore construction and port enlargement construction. However, there are only few marine traffic assessment models that can be referenced from other countries, and none of them contain a risk assessment model suitable for the situation regarding Korean waterways. Therefore, it is necessary to develop a quantitative assessment of marine traffic environments based on ship navigator’s consciousness. To develop a new, suitable assessment model for marine traffic, the internal and external elements of vessels, based on a questionnaire survey and simulation experiment, are considered. The ship’s internal static parameters, vessel type, length, and width, as well as mariner’s experience, license, and rank on board are determined for the risk value. Furthermore, the external dynamic elements are calculated by the results of the questionnaire, which addresses the ship’s encounter situations and distances. Through this potential assessment of risk model, we used function as navigation equipment onboard to prevent a collision accident, applied it as a solution of a Vessel Traffic System (VTS) decision-making support system, and used the vessel evacuation route to recover the vessel’s normal situation from an emergency.","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126098642","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}
{"title":"Entry into force of ship ballast water management Convention and its implementation from perspective of Northeast Asia","authors":"H. Yang, Jeong-Hyun Cha, Sunhwa Kim, Hyun-Jun Kim","doi":"10.1080/25725084.2017.1427322","DOIUrl":"https://doi.org/10.1080/25725084.2017.1427322","url":null,"abstract":"","PeriodicalId":261809,"journal":{"name":"Journal of International Maritime Safety, Environmental Affairs, and Shipping","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131656352","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}