• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.11a
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• pp.31-33
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• 2011

목포항 진입수로 중 한곳인 불무기도 인근은 남북방향으로 통과 선박 및 목포항 입출항선박이 항행을 하고, 동서방향으로는 여객선 및 쾌속선이 항행을 하고 있다. 또한 이 구간에서 조업 및 항행중인 어선들이 많아 항행특성 파악이 필요하다. 본 연구에서는 목포항 진입수역인 불무기도 부근에서 통항중인 선박들간의 CPA/TCPA를 분석하여 목포구 진입수로 항행특성 파악하여 통항선박의 위험도를 평가 하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.67-68
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• 2016

해상교통환경평가는 선박 간 항행상황의 위험도를 정량화하여 나타냄으로써 선박의 안전운항을 효과적으로 지원하는 역할을 한다. 대표적인 해상교통환경평가모델로는 ES(Environmental Stress model)와 CR(Collision Risk)모델이 있다. 이러한 모델을 살펴보면, 각각의 평가지수를 이용하여 항행상황의 위험도를 정량화하며, 선박 간 조우관계를 기반으로 평가요소를 구성함을 알 수 있다. 이번 연구에서는 선박 간 조우관계를 포함한 항행상황의 위험도에 영향을 줄 것으로 기대되는 다양한 요소를 고려한 평가지수의 타당성을 살펴보고자 한다. 이를 위하여, AIS data를 이용하여 해상교통환경을 재현하고 분석하였으며, 동일한 항행상황을 ES, CR과 제안한 모델을 이용하여 위험도 평가를 실시하였다. 그 결과를 비교하여 제시함으로써 본 모델이 해상교통환경모델로서 항만 내 통항 안전성 평가에 적용 가능성을 평가하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2018.11a
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• pp.66-70
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• 2018

낙동강 하구 유역은 상류에서 퇴적되는 모래로 인해 수심의 변화가 매우 심한 지역으로써, 부산청에서는 인근 항해 선박의 안전을 위해 저수심 표시용 등주를 설치하여 운영하고 있다. '04년 첫 설치 이후, 지역적 특성과 구조물 자체의 한계로 선박추돌 및 기상(태풍, 홍수 등)으로 인한 등주 분실사고가 매년 발생(총 305기)하였으며, 이렇게 유실된 등주는 낙동강 하구 유역을 통항하는 선박의 항행 안전에 큰 위협이 되었다. 부산청은 침몰된 등주와 통항선박과의 충돌 등 안전사고 예방을 위해 '17년 낙동강 하구 분실 등주에 대한 수색 및 인양 사업을 실시하였다. 본 논문은 동 사업의 준비단계부터 최종준공까지의 추진방안 및 결과 등 주요사항들을 고찰하고 공유하여 향후 해저 항행위험물 제거 사업 추진에 있어 참고가 되고자 한다.

• Journal of Advanced Navigation Technology
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• v.20 no.4
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• pp.285-291
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• 2016

Safety assessment is an essential activity for developing a system in the CNS/ATM domain. Up to now, there are many reference materials, but there is nothing that definitely specifies what to do and how to apply in the CNS/ATM. Another problem is that software assurance level has to be determined for a software under development. But there is nothing that defines a determination scheme of software assurance level. To solve these problems, this paper proposes a method to conduct a hazard assessment based on target level of safety defined in ICAO Doc 9689. To be applied generally in CNS/ATM domain, it mathematically defines procedures of hazard assessment. And it defines severity classification, probability, and safety objective of a system, which are necessary for hazard assessment, and it describes a method to apply event tree analysis process in order to conduct a hazard assessment.

• Journal of the Korean Institute of Intelligent Systems
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• v.20 no.4
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• pp.541-547
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• 2010

Marine accidents do not correspond with another accidents because of a serious loss of lives and property. The many marine accidents can be attributed to human error like as carelessness and decision faults, and hence there is a strong need for decision-support tools for marine navigation. Much of researchers have introduced the techniques about the tools, but they hardly consider environmental factors (water depth, the width of waterway, a fishing ground, a current, the number of surrounding marine accidents, marine obstacles, etc), which are very important to the decision making of officers. In a previous research, we proposed the conceptual model of environmental risk assessment of ship navigation using fuzzy. This paper describes the detailed design of the environmental factors based on the opinion of navigation experts, and shows the validity of the conceptual model through a prototype system.

• Journal of the Korea Society for Simulation
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• v.19 no.3
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• pp.127-135
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• 2010

Modern marine navigation requires officers on the bridge to monitor a torrent of data on both the insides and outsides of the ship from numerous useful devices. But despite these tools, navigators can still find it difficult to make a safe decision for two reasons: one is that too much data if provided too quickly tends to cause fatigue and overwhelm the officer, and the other is that any inconsistency across data from several different types of devices can lead to confusion. Indeed, the fact remains that the many marine accidents can be attributed to human error, and hence there is a strong need for decision-support tools for marine navigation. One technique of providing decision support is through the use of simulation to evaluate or predict system dynamics over time using an accurate model. This paper, as a simulation method for risk prediction for a navigation safety information system of ship, suggests a navigation prediction simulation system using various knowledge bases and discrete event simulation methodology, and supports the validity of the system through the examples of components in a restricted navigation situation scenario.

• Journal of Navigation and Port Research
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• v.42 no.6
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• pp.478-485
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• 2018

Aids to Navigation (AtoN) is one of the marine traffic safety facilities that promotes the safety of maritime traffic and enhance ship's operational efficiency. However, functional failure of AtoN due to ship's collision or bad weather conditions leads to inconvenience or navigational risk to various users such as the ship operators. For insstance, the largest container port in Korea, Busan Port has experienced a total of 400 AtoN accidents in the past 12 years (2006-2017).Therefore, an average of 20.6 days of recovery time is required, which increases the maritime safety anxiety for AtoN users. is the objective of this study was to present the quantitative support of the users for the prevention of AtoN accidents and the improvement of the feasibility of implementing more efficient management in Korea. A survey was conducted on the users of Busan port areas to investigate general perception of AtoN in general and the accidents that have happened, and to estimate the economic value of navigational risk reduction by implementing effective AtoN management measure. Using the representative non-market valuation method for environmental or public goods known as contingent valuation method (CVM), the economic value granted to users for the AtoN services in Busan port was estimated to at least 16 billion won. Therefore, these finding could be used by AtoN managers and/or policy makers as a valuable data to identify the users' need of various AtoN services including Busan Port and to establish and implement more efficient management plan.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2023.05a
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• pp.31-32
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• 2023

현존선과 자율운항선박의 공존(共存)항해에 대비하여, 해상교통 안전관리 강화 및 국민의 인명·재산 보호를 위해 선박 간 항행의도 확인 및 위험상황 회피를 위한 차세대 교신체계 및 관제지원기술 제안

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.523-525
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• 2012

최근 완도 관제구역 내에서는 자주 발생하고 있는 예부선 사고를 관제화면을 통해 분석하여 보았다. 무엇보다도 예부선을 주요 항행위험 유발선박으로 인식하여 관제 우선 선박으로 관리하는 것이 중요하다는 것을 알 수 있었다. 현장사진 위주로 실제적인 예부선의 조종특성과 항행상의 문제점을 알아보았다. 또한 개항질서법 상에 우선피항선으로 규정된 예부선의 법적지위를 고찰함으로써 관제 업무에 도움이 되고자 하였다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2016.05a
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• pp.103-105
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• 2016

Shin(2015) etc. published use of smart phones on the effect the use of smart phones released in the ship duty performed by survey of using smart phones Status and Usage in previous studies, soon as the survey provided this environment(36% on sailing) where you can use your smart phone from the ship, at the risk of officers using survey questionnaires were analyzed smart phones that use about twice the risk than before. In this study, maritime those who have experienced a period of sailors aboard a diagnostic test subjects Ship Handling Simulation analysis evaluation item of Maritime Traffic Admit, Proximity evaluation of a ship evaluation, by measuring the degree of danger that the subjective evaluation and control of the ship evaluation to evaluate the risk on navigation safety. Also indicated the risk of a smart phone quantitatively by measuring the time that the awareness of dangerous situation depending on using smart phone or not.