• IE interfaces
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• v.11 no.1
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• pp.97-103
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• 1998

In these days many people have studied on the berthing problem. The operation rules differ from port so port and the problem is highly dependent on the environment of port. The purpose of this study is to develop a decision support system decision makers of the berthing problem for Inchon Port. The system is developed with graphic user interface(GUI) using user-interactive approach and some general and specific rules for Inchon Prot are considered. The system is composed of the following four parts ; the input/output part, the automatic berthing part by the system using rules, the manual berthing part by user, and the part for modifying results or handling exceptional events. The system is designed to assign ship to berths by matching the characteristics with environmental and operational constraints of Inchon Port. We expect that this system can provide decision makers with an efficient and fast way to berthing and can reduce wastes of time, space, and manpower in port operations.

• Journal of the Korean Institute of Navigation
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• v.5 no.1
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• pp.25-35
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• 1981

Since 1960 tankers and bulk carriers have rapidly increased in size up to 500, 000 dwt. in operating as main system of transportation for the international trade at sea, and studies are doing carried out by various groups with a view to increasing the size still further. However, the service speed of these ships has remained almost constant, and steering devices of them have nearly not changed, comparing with regular size of a dry cargo ship. This creats the dituation where stopping distance and advance are proportionally longer for larger ships. In case of collision at sea, these vessels have been arised some serious casualties, such as sinking, fire and oil pollution. This paper analyzers a study for the handling of super huge vessels to avoid collision at sea, basing on the results of the crash astern test and turning test of them.

• Journal of Mechanical Science and Technology
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• v.20 no.11
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• pp.2002-2009
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• 2006

This paper is primarily focused on the safe navigation between overtaking and overtaken vessels in restricted waterways under the external forces, such as wind and current. The maneuvering simulation between two ships was conducted to find an appropriate safe speed and distance, which is required to avoid collision. From the viewpoint of marine safety, a greater transverse distance between two ships is more needed for the smaller vessel. Regardless of external forces, the smaller vessel will get a greater effect of hydrodynamic forces than the bigger one. In the case of close navigation between ships under the forces of wind and current, the vessel moving at a lower speed is potentially hazardous because the rudder force of the lower speed vessel is not sufficient for steady-state course-keeping, compared to that of the higher speed vessel.

• Journal of Information Technology Services
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• v.12 no.2
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• pp.335-348
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• 2013

Vessel PMS (Planned Maintenance System) is a paper and/or software based system to monitor vessel engine equipment including main propulsion, steering, auxiliary machinery and cargo handling information. This is one of mandatory survey for vessel introduced by IMO (International Maritime Organization). The planned maintenance as well as documentation must be performed according to a system to be approved by classification agencies. Recently, vessel owners have preferred software based systems to collect and preserve accurate data. However, not ship specific and not taking into account the user are said by end users as operational difficulties. To relieve these concerns, this research analyzes vessel PMS data, suggests a middleware to support automatic collection and design consideration of user interface.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.05a
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• pp.397-400
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• 2009

When the metal sheet is subjected to the housing surface for fitting and insulating from harsh surroundings like fluid ingression or hot steam, both strength and formability have to be equally considered. In this regard, the main aim of this study is to design an apparatus of cost-effectively producing flexible fluted band with increasing the formability of embossed stainless steel sheet, which is utilized as a thermal insulation metal for housing ship engine exhauster. Designed to fabricate a maximum sheet width of 700 mm, this new apparatus consists of upper roll made of hard urethane and the female-etched lower roll made of SKD11, have a producing capacity up to 1-meter homogeneously embossed sheet for just 60 seconds. This machine is devised for the maximum operating efficiency from original sheet handling to machine setting. The embossing properties are characterized by 3-D profiling. After embossing plain metal sheet, both yield strength and elongation properties are improved simultaneously, indicating the effectiveness of the newly designed apparatus.

• Journal of the Korea Society for Simulation
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• v.14 no.3
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• pp.13-19
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• 2005

선박조종시뮬레이터는 교육훈련생들에게 실제와 비슷한 환경을 제공하여 교육훈련의 효과를 높일 수 있는 장점을 가지고 있다. 그러므로 선박조종시뮬레이터에는 선박의 정확한 수학적 모델과 실제와 거의 동일한 3차원 화면이 필요하다. 이 연구에서는 전자해도와 고도데이터를 이용한 3차원 영상 제작법에 대해 고찰하고자 한다. 전자해도는 전 세계적으로 표준화 되어 있어 정확성이 가장 뛰어날 뿐만 아니라 수심, 항해물표 등 각종 데이터를 가지고 있어 보다 많은 정보를 선박조종시뮬레이터에 적용할 수 있는 장점을 가지고 있다. 그리고 고도데이터의 경우 그 정확성으로 기존의 해상환경 데이터베이스보다 훨씬 현실감을 준다. 전자해도 및 고도데이터를 이용하여 해상환경을 제작 시 정확한 많은 정보의 제공이 가능하며, 기존의 방법에 비해 제작시간을 상당히 감소시킬 수 있을 것으로 판단된다.

• Industrial Engineering and Management Systems
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• v.9 no.2
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• pp.178-194
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• 2010

To improve the ship operation in automated container terminals, it is important to schedule different types of handling equipment to operate synchronously. For example, a vehicle with container receiving and lifting capabilities is used to transport containers from a storage yard to a vessel and vice versa, while a triple quay crane (QC) can handle up to three 40-ft containers simultaneously. This paper discusses the manner in which vehicles should be assigned to containers to support such multi-lifts of QCs by using information about the locations and times of deliveries. A mixed-integer programming model is introduced to optimally assign delivery tasks to vehicles. This model considers the constraint imposed by the limited buffer space under each QC. A procedure for converting buffer-space constraints into time window constraints and a heuristic algorithmfor overcoming the excessive computational time required for solving the mathematical model are suggested. A numerical experiment is conducted to compare the objective values and computational times of the heuristic algorithm with those of the optimizing method to evaluate the performance of the heuristic algorithm.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.537-539
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• 2015

선박운항 시뮬레이터 시스템은 실제 선박의 움직임을 사실적으로 모사하여 선박운항을 가상으로 체험하도록 하는 시스템이다. 최근 해양안전에 대한 관심이 증가하면서 이러한 시뮬레이터 시스템에 대한 요구사항이 다양해졌지만, 그 구성이 복잡하여 다양하게 활용되지 뭇하고 있는 실정이다. 본 논문에서는 플랫폼에 제약을 받지 않고 확장 및 변형이 용이한 웹 기반의 시뮬레이터 프레임워크를 제안하였다. 제안하는 프레임워크는 최신 웹 기술을 기반으로 데이터베이스, 서비스, 인터페이스, 어플리케이션 계층으로 구성되며, 규모와 목적이 다양한 시뮬레이터 시스템에 효과적으로 적용될 것으로 기대한다.

• International Journal of Naval Architecture and Ocean Engineering
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• v.12 no.1
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• pp.129-145
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• 2020

The article presents a systematic approach to design of marine navigation channels parameters resulting from manoeuvring and operational safety. Relations between the parameters of waterway system elements and the conditions of safe ship operation have been determined and the objective function of waterway parameters' optimization problems has been minimized with respect to variables of construction and operation costs. These costs have been functionally associated to variables of channel width at the bottom and fairway depth. The method of fairway's width computation at specified safe depth at the preliminary and detailed stages of waterway design has been proposed. The results of this method application have been illustrated with two examples: 1. The modernization of Szczecin-Swinoujscie fairway aimed at accepting vessels of 60,000 DWT capacity. 2. Construction of an approach channel leading to a newly built container terminal in Swinoujscie harbour (Poland), handling ocean-going container ships of 20,000 TEU capacity.

• Journal of Navigation and Port Research
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• v.30 no.6 s.112
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• pp.465-470
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• 2006

Nowadays, vessel's size is tending to bigger, Therefore port facilities are developed according to this trend, which has been shown in the competition of Hub-Port among the main ports such as Port of Busan and Port of Shanghai. However there are the limited number of large containerships more specifically so 70% of the total ships calling at Busan Port are small and medium sized ships which are less than 20,000 ton As a result, it is necessary to consider the handling facilities of these ships which had been disregarded The big size of facilities increases handling cost bemuse of high investment so it is possible for small and medium sized ships to have disadvantages financially and avoid calling. In this paper, we estimate the propriety of utilization of crane and labor according to the size of vessels after analyzing time value cost, reflecting the size of vessels, size and number of crane and labor structure, and container handling cost value.