• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.135-137
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• 2015

본 논문에서는 북극해항로(NSR)의 운항여건, 현황 및 기간별 운항내용에 대한 평가가 다뤄진다. 한국 관련 NSR 운항내용이 상세히 설명되며, 특히 2014년-15년, 서방의 대러시아제재여파 및 국제유가하락 등에 따른 NSR 국제통과수송 급락 배경 분석이 이뤄진다. 또한 현재 주요 국가들의 NSR에 대한 관점이 소개되며, 향후 NSR의 지속 활용을 위한 선사, 정부, 지자체 등 주요 주체들의 당면과제와 방안이 제시된다.

• Journal of Advanced Marine Engineering and Technology
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• v.40 no.1
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• pp.17-27
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• 2016

The need for storage and transportation facilities of liquefied natural gas have increased significantly because of global environmental regulations and recent shale gas innovation in North America. There is severe competition between Korea, Japan, and China for receiving manufacturing orders of LNG carriers or LNG storage tanks. Rationalization of the welding process used in the manufacturing of LNG facilities plays an important role in the above competition. This review paper presents the current global status and tendency for the development of latest welding technologies for LNG storage and transportation facilities. This article intends to present materials for raising the domestic competitive power for receiving manufacturing orders of LNG facilities.

• Journal of the Society of Naval Architects of Korea
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• v.39 no.4
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• pp.42-53
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• 2002

This paper is for the hull form development of high-speed passenger ship in the Yellow Sea. To carry out hull form development in Yellow Sea, a catamaran which is designed for high-speed as well as comfortable passenger vessel up to now is selected and investigated. For this, environments of the Yellow Sea such as tide, water depth and so on are considered as important factor. The economical efficiency of the designed ship is considered too. In order to estimate the resistance characteristics of the designed hull form, numerical simulations and model test are performed.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.6 no.7
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• pp.1133-1138
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• 2002

There have been a lot of marine accident due to the increasing transportation by sea in accordance with economic growth. Accordingly, we are fully aware of the importance of the development of safety control system so that many prevent the sacrifice of life and disasters on the sea. The objective·e of this research in to investigate the more effective system by establishing the prevention of safety accident and marine information system as a national project.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2002.11a
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• pp.522-528
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• 2002

There have been a lot of marine accident due to the increasing transportation by sea in accordance with economic growth . Accordingly, we are fully aware of the importance of the development of safty control system so that may prevent the sacrifice of life and disasters on the sea. The objective of this research in to investigate the more effective system by establishing the prevention of safety accident and marine information system as a national project.

• Journal of the Korean Society of Marine Environment & Safety
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• v.9 no.1
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• pp.33-40
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• 2003

This paper is intended as an investigation of introduction of Maritime Security System. In the last few years, several articles have been devoted to the study of ISPS Code(International Code for the Security of Ships and of Port Facilities). The Diplomatic Conference on Maritime Security held in London in December 2002 adopted new provisions in the International Convention for the Safety of Life at Sea, 1974 and this ISPS Code to enhance maritime security. These new requirements form the international framework through which ships and port facilities can co-operate to detect and deter acts which threaten security in the maritime transport sector. Accordingly, the purpose of this paper is to suggest an introduction, if Maritime Security System and understanding of ISPS Code.

• Journal of Korea Port Economic Association
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• v.26 no.3
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• pp.42-55
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• 2010

This paper primarily deals with a decision-making for determining the number of voyages in each ship size under a specific port structure in order to minimize the total transport cost consisting of transport cost at sea, queuing cost in port, and inventory cost in yard. As a result of computer simulation using queuing model characterized by inter-arrival time distribution, we were able to find out some combination of voyage numbers of 3 ship-size(50,000-ton, 100,000-ton, and 200,000-ton), where the total transport cost can be minimized under a specific port structure. The simulation model also allows us to figure out any trade-off relationship among sea transport cost, queuing cost in port, and inventory cost in yard. Put it differently, an attempt to reduce the sea transport cost by increasing the number of voyages of the largest ship size, the transport cost incurred in both port and yard is hypothesized to be increased and vice versa. Consequently, Port managers are required to adjust the number of annual number of voyages allocated in each ship size, put into the sea lines for importing raw materials, in order to optimize the transport costs incurred under the specific port system. We may consider a net present value(NPV) model for performing an economic feasibility analysis on port investment project. If a total discounted net benefit, including cost savings, exceeds the initial investment for an additional berth construction, then we accept the port investment project. Otherwise, we reject the proposed port investment plan.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 1997.10a
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• pp.81-85
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• 1997

최근 연안해운시스템구축을 목적으로 대형신항만 건설계획이 추진되고 있으며, 교통수송 등의 편리성 및 경제성을 확보하기 위한 다수의 해상교량이 건설, 설계되고 있다. 이처럼 해안역에 구조물이 축조되면 파랑과 조류 및 연안류의 작용에 의하여 구조물 주위지반에는 세굴현상이 발생하는 것이 일반적이다. 이와 같은 세굴현상은 구조물의 안전성에 매우 심각한 영향을 초래하는 경우가 많다. 그러므로 해상구조물 건설시에는 세굴현상에 대한 세밀한 검토를 실시하여 대책을 강구하여야 할 필요가 있다. (중략)

• Computational Structural Engineering
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• v.10 no.3
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• pp.67-73
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• 1997

CFD 연구를 초고속선 선형개발에 활용한다면 선체주위의 유동장 계산결과로부터 압력 및 속도, 자유표면 파고분포 등 초고속선의 설계 및 기본계획 단계에서 필요한 저항 및 추진성능 자료를 얻을 수 있다. 이러한 기능을 더욱 개선 발전시키면 선형개발에 더 많은 적용이 예상된다. 또한 항주 시간에 따른 초고속선의 운동특성을 고려할 수 있게 된다면 앞으로 항주자세제어 및 내항성능과 승선감의 추정도 CFD 연구를 통해서 가능하리라 믿는다. 이제 국내 조선소를 중심으로, 21세기에 도래할 것으로 예측되는 고속 해상수송 수단에 대한 수요에 대응하고 조선기술의 우위확보를 위해 고부가가치, 고성능이 요구되는 초고속선 기술개발에 연구를 집중해야겠다.

• Maritime Security
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• v.5 no.1
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• pp.85-112
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• 2022

The maritime blockade has long been used as a means of war in that it serves as a bridge for economic warfare by paralyzing enemy maritime transport, although it is not a decisive battle, and in the Korean War, U.N. forces have achieved significant results in the war with limited maritime blockade through the Clark Line. However, with China emerging as a maritime powers based on its strong naval power, there is a lack of consideration on how to set up a blockade to block maritime activities and how to respond neutral ships or carrying wartime contraband products if war breaks out again on the Korean Peninsula, In addition, since maritime blockade should be used as a sensitive and flexible naval force projection in that it has interests with neutral countries, it should be carefully reviewed in that it can be used only through careful and reasonable judgment considering the principle of ensuring the legality of maritime blockade Therefore, in this study, Reexamine the process of change in the application of the International Law of Blockade, and through this, Derive the basic principle of ensuring the legitimacy of maritime blockade. In addition, by reviewing the application of these basic principles in the waters off the Korean Peninsula at wartime, we presented answers to research questions by reviewing what needs to be done to neutral ships and ships carrying wartime contraband products, and considered the implications for us