• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.05a
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• pp.108-109
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• 2018

국내 5년간의 해양사고 현황을 살펴보면 충돌사고가 가장 많은 비율을 차지하고 있으며, 사고 건수 또한 증가하는 주세이다. 우리나라에서는 해상교통안전진단 규정에 따라 통항 안전성 확보가 가능하다고 평가하는 기준을 근접도에 따른 충돌 확률 $10^{-4}$으로 정하고 있으나, 이 기준에는 해상교통흐름 및 교통량을 반영하고 있지 않은 실정이다. 따라서 본 연구에서는 해상교통조사를 기반으로 부산항 접근해 역의 선박 충돌 확률 산출을 목적으로 한다. 충돌 확률은 부산신항 $1.058{\times}10^{-4}$, 부산항 $0.830{\times}10^{-4}$으로 해상교통안전진단 기준인 $10^{-4}$과 근사한 값으로 산출되었으며, 최근 10년간 부산항 접근 해역의 해양사고 발생 위치와 비교해본 결과 충돌 확률이 높은 곳에서 실제 사고가 발생한 것을 확인하였다. 추후에 다양한 항만의 충돌확률 산출을 통하여 국내 해상교통량 기반의 충돌확률을 확립하는데 기초자료로 활용할 수 있을 것이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.07a
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• pp.357-359
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• 2015

부산신항은 우리나라 최대이자 세계 제6위의 컨테이너화물 처리항만으로 자리매김을 하고 있다. 최근들어서 차세대의 친환경 선박으로 벙커C 연료유 대신에 LNG 연료유를 사용하는 선박개발이 본격화되고 있다. 이에 따라서 부산신항의 항만기본개발계획에 들어 있는 유류중개기지 축조 대신에 Bunker LNG(BLNG)터미널 축조를 검토하고 있다. 이 연구에서는 BLNG터미널 개발과 관련하여 초대형 컨테이너선의 남컨 및 북컨 터미널 입항접안에 장애요소로 작용하고 있는 토도의 유무 및 호란도 절개에 따른 해사안전법 상의 해상교통안전진단시행지침에서 규정하고 있는 위험요소에 대한 충돌확률과 선박 운항자의 주관적 평가를 중심으로 안전수역 확보에 대하여 종합적으로 평가, 분석하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.225-227
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• 2012

해상교통안전진단제도의 시행으로, 해상교통에 영향을 미칠 가능성이 있는 모든 건설 사업은 필히 선박운항자 관점에서 그 안전성을 검토하여야 한다. 진단제도의 정량적 평가항목 중에, 선박이 장애물이나 위험지역과의 충돌확률을 평가하는 근접도 평가항목이 있는데, 이는 항로상의 어떤 단면에서의 선박 궤적 분포가 정규 분포를 한다는 가정에 근거하고 있다. 한편, 진단제도의 또 하나의 정량적 평가기법중 하나인 해상교통류 시뮬레이션에서는, 대상 선박들의 예상 항차수로부터 선박을 통계적으로 발생시키는 기법을 사용하는데, 여기에서는 항로상의 특정 지점을 연속해서 통과하는 선박들의 시간 간격이 Poisson 분포를 따른다는 가정을 사용한다. 본 논문에서는 이러한 기본적인 가정들이 적합한지를 고찰하기 위하여, 광양 및 인천항에서 실측한 해상교통현황 조사 결과를 분석하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.1
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• pp.36-42
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• 2018

This paper considers the Marine Traffic Risk Assessment for fixed and moving targets, which threaten officers during a voyage. The Collision Risk Assessment Formula was calculated based on a dynamic ship domain considering the length, speed and maneuvering capability of a vessel. In particular, the Navigation Risk Assessment Model that is used to quantitatively index the effect of a ship's size, speed, etc. has been reviewed and improved using a hybrid combination of a vessel's dynamic area and the Collision Risk Assessment Formula. Accordingly, a new type of Marine Traffic Risk Assessment Model has been suggested giving consideration to the Speed Length Ratio, which was not sufficiently reflected in the existing Risk Assessment Model. The larger the Speed Length Ratio (dimensionless speed), the higher the CJ value. That is, the CJ value is presented well by the Speed Length Ratio. When the Speed Length Ratio is large, states ranging from [Caution], [Warning], [Dangerous] or [Very Dangerous] are presented from a greater distance than when the Speed Length Ratio is small. The results of this study, can be used for route and port development, including dangerous route avoidance, optimum route planning, breakwater width, bridge span, etc. as well as the development of costal navigation safety charts. This research is also applicable for the selection of optimum ship routing and the prevention of collisions for smart ships such as autonomous vessels.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.264-264
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• 2019

The purpose of this paper is to establish development concepts for a novel collision avoidance system with preventing function of navigator's human error (Hu-CAS) in ship control behaviors. Hu-CAS consists of four modules: 1) collision risk assessment module to estimate collision priority between the ship and objects, 2) decision-making module to decide collision risk levels, 3) parameter estimation module needed in the ship control to avoid collisions and 4) control system to control the rudder angle and speed. Hu-CAS, proposed in this paper, can provide a novel system substitution current Autopilot and/or a CAS be teen manned vessel and Autonomous ship in a future.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.5
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• pp.1753-1763
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• 2013

In the design phase of sea-crossing bridge projects, ship collision problem is mostly participated in decision of substructure section and it would be performed by risk assessment and impact simulations. Ship collision risk is assessed by probability model which is similar to method II of Guide Specification and Commentary for Vessel Collision Design of Highway Bridge(AASHTO, 2009). However, several factors used in the applicable code are limited to inland waterways or have many local characteristics. Accordingly, it should be needed judgement of engineer or referred to related criteria, research finding. In this study risk assessment for In-cheon bridge and review of existing substructure's impact risk and resistance capacity are performed using the 2010's ship passage data. And then consideration regarding to presumption and applied instance of factors needed for risk assessment and related research findings are performed on the basis of AASHTO Guide's Method. As a result of study, adequate variable region of factors needed for risk assessment is defined and sensitivity analysis for appropriate region is performed. Consequently, factors that should be applied carefully or needed for direct analysis of local data are confirmed. This research could be fundamental material to risk assessment related to design for sea-crossing bridge taken into account ship collision.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2004.11a
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• pp.73-80
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• 2004

Recently, many maritime accidents have been increased and the collisions due to human error are given a great deal of proportions out if them We develop the Real-time Collision Risk Monitoring System (CRMS) for the navigational officers to cope with the emergency situation promptly and thus to reduce the probability if casualty. In this study, the risk of collision is evaluated by two kinds if method. The first method is based on Fuzzy algorithm, which evaluates the risk of collision between traffic ships. The second method is based on Environmental Stress (ES) Model, where the total risk if collision is evaluated by the environmental stress felt by human. The developed real-time CRMS has been installed to the ship handling simulator system and its capabilities have been tested through simulator experiments.

• Journal of Navigation and Port Research
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• v.33 no.1
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• pp.43-50
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• 2009

Recently, many maritime accidents have been increased and the collisions due to human error are given a great deal of proportions out of them We develop the Real-time Collision Risk Monitoring System (CRMS) for the navigational officers to cope with the emergency situation promptly and thus to reduce the probability of casualty. In this study, the risk of collision and grounding is evaluated by two kinds of method. The first method is based on Fuzzy algorithm, which evaluates the risk of collision between traffic ships. The second method is based on Environmental Stress (ES) Model, where the total risk of collision and grounding is evaluated by the environmental stress felt by human. The developed real-time CRMS has been installed to the ship handling simulator system and its capabilities have been tested through simulator experiments.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.471-473
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• 2013

주요 통항로에 설치된 해상교량과 해상풍력단지는 선박의 안전항해에 지대한 영향을 미친다. 특히, 90년대 들어 국내에 다수 건설된 해상교량은 과거에 경험하지 못한 대규모 선박-교량 충돌사고의 유발 가능성을 예고하고 있다. 또한 국내 군산지역에 구축될 해상풍력단지 역시 선박과의 충돌 가능성을 내포하고 있다. 이 논문에서는 과거에 연구 개발된 해상교량과 해상풍력단지의 안전성 평가기법을 조사하고, 향후 실용화 방안을 모색하였다. 연구결과, 기존 연구결과를 토대로 위기관리 시스템을 구축하면 궁극적인 해양사고 예방이 가능할 것으로 고려되었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.13-14
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• 2016

Many ships' collision accidents occur due to unlawful action at sea. And also at shore traffic, many car collision accidents occur due to unlawful action. Therefore In this study we analyzes actual collision accidents at sea with the regards of liability. and search and analyze similar car collision accidents at shore traffic to compare it with the ship collision. In result, this study suggests the liabilities of the two different types accidents are needed to change more reasonable liability apportionment.