• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.143-143
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• 2017

• Journal of Korean Port Research
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• v.11 no.2
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• pp.173-189
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• 1997

Whether over taking or parallel sailing of two or more vessels is allowable on marine traffic route or not, the traffic congestion due to traffic volume has to be evaluated separately. In Gaduk-sudo, overtaking or parallel sailing is so allowable that the Bumper Model is introduced to evaluated the traffic congestion. But the channels within the habour limit such as the route of Ulsan New Port are so prohibited overtaking or parallel sailing that the traffic congestion has to be evaluated by using theoretical traffic capacity or by traffic simulation. In this paper, the congestion of Southern New Port and Mipo Port was evaluated the congestion by using theoretical traffic capacity and the other area of Ulsan Port by traffic simulation. The incresed traffic volumes on Ulsan Channels according to Ulsan New Port Development in 2011 were evaluated to have no effect with the traffic congestion.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.77-79
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• 2013

본 연구는 최근 해양사고가 증가하고 있는 목포권역의 해상교통 위해 요소를 발굴하고 목포항 입출항 항로 개선 방안을 제시한다. 이를 위하여 해당 수역의 교통환경을 분석하고, 전문가 의견을 수렴하였다. 또한 교통혼잡도 분석 및 이에 근거한 통합 환경스트레스 수치를 구하였다.

• Journal of the Korean Society of Marine Environment & Safety
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• v.19 no.5
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• pp.483-490
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• 2013

In this study, we analyzed AIS measured data for ten days by selecting the four main ports with many ships arriving in the national ports. The peak time congestion of the main ports, calculated by survey research, was about 3.8-5.7 times higher than the hourly average congestion. This is very different from the results of the advanced research, evaluating the marine traffic congestion of the Ulsan main port based on the existing Port-MIS statistical data, which showed a peak time congestion of about 1.7 times higher than the hourly average. This identifies the problem of distorting the traffic characteristics of the current passage. Therefore, in order to evaluate marine traffic congestion, it would be more appropriate to calculate it based on survey research, rather than Port-MIS statistical data.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.71-73
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• 2013

선박 및 VTS에서 선박교통량이 밀집되는 혼잡해역의 선박교통밀도 평가는 중요하다. 본 연구에서는 선박 충돌 회피를 위한 적절한 반경인 Ship Domain 영역과 혼잡구역 내 선박 체류시간 및 전 방위 통항류를 고려하여 혼잡해역의 항로가동률 및 실시간 해상교통밀도 산출 모델을 제안하고자 한다. 또한 제안된 모델식을 기반으로 시뮬레이터를 프로그래밍하여, 실 해역 해상교통 데이터를 적용하여 제안한 모델식의 유효성을 평가하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2010.10a
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• pp.23-24
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• 2010

오늘날 세계 각국은 글로벌 경제 체제에서 교역의 증대에 따라 해상 물동량이 증대되고 있으며 선박의 대형화, 고속화, 자동화, 또 해상대교나 신항만 건설 등 해상교통질서와 관련하여 항로표지 등 해양교통시설의 여건이 급격히 변화되었다. 이와 관련하여 항로표지는 항로의 혼잡을 방지하여 해운 물류를 원활히 하기 위한 수단이 된다. 항로표지는 광파, 형상, 음파, 전파 표지 등인데 이의 제도적 정비 및 규격의 표준화의 필요성과 방안을 분석하였다. 또한 국제표준과 한국표준의 제정 절차를 분석하고 국내용 항로표지용품 국토해양부 규격의 표준화 방안을 검토하였다. 향후, 항로표지의 기술적 분석, 항로 운영과 항로표지의 효율성, ICT 기술이 적용된 효과적 항로표지시스템분야에 있어서의 연구가 더욱 진행되어야 할 것이다.

• Journal of Navigation and Port Research
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• v.35 no.6
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• pp.469-475
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• 2011

Ulsan pilotage is one of the most busy pilots boarding among the korean pilotages. The route layout of ulsan port is simple but the complex degree of marine traffic flow is high because there are many navigating ships from/to piers and anchorages nearby route. So, this paper is surveyed and analysised the navigating dangerous factors as to navigation danger elements in/near the route, the proper distance between piers at the ulsan waterways. And this research assures the same place where shiphandling bunder is occurred to compare the danger sense of pilot with environment stress to represented the mariner's shiphandling stress quantitatively at the ulsan route.

• Journal of the Korean Society of Marine Environment & Safety
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• v.24 no.2
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• pp.133-139
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• 2018

Keeping a proper straight route length under the marine bridge is one of the important factors for the safe passage of ships. However, according to port and harbor design standards, there is only a constant guideline of 8 times the length of the marine bridge underpass. On this study, we used the ES model to determine the ratio of risk to the route width, traffic volume, the degree of curvature of the route, and the length of the straight route in order to derive the optimal straight route distance. As a result, the risk ratio decreased by 2.27% as the route distance increased from 3L to 10L when the degree of curvature of the route was $45^{\circ}$. The risk associated with curvature was found to be 4.83% when the bending degree was changed from $0^{\circ}$ to $45^{\circ}$ in the case of 3L length. In addition, it was confirmed that the risk ratio according to the degree of curvature of the route and the straight route was reduced by 1.45% at maximum under the condition that the width of the line was 400m and the number of the vessels generated per hour was 20. It was verified that a straight route distance more than a certain length is needed depending on the congestion degree and the degree of curvature of the route when constructing the marine bridge.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.2
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• pp.153-160
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• 2017

It may be reasonable to consider density per unit area over time rather than analyze traffic volume, which is simply the traffic volume per unit of time, in assessing the maritime traffic congestion of a certain area. This study contributes to the standardization of maritime traffic congestion assessment methods for the maritime traffic safety diagnosis institute while seeking a new method to minimize evaluation error due to converted traffic volume per ship tonnage level. To solve this problem, a method to evaluate maritime traffic congestion by comparing the area occupied by a vessel with the area of its route using vessel identification data from the Automatic Identification System (AIS) has been proposed. In this new model, it is possible to use actual data due to the development of information and communication technology, reducing conversion error while allowing for the evaluation of maritime traffic congestion by route.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.11a
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• pp.344-346
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• 2022

최근 자율운항기술개발이 활발하게 이루어짐에 따라 자율운항선 실증이 증가하고 있으며, 또한 자율운항선의 효율적 운용 특히 운항의 안전성을 위해 입출항 시기의 적절성 또한 중요해지고 있다. 이에 해상교통혼잡도를 예측하고자 하였고, AIS 빅데이터를 통해 선박별항적을 분석 및 분류하고자 하였다. 장기적 관점에서 PORT-MIS 선박입출항현황 데이터(호출번호, 입항일시, 출항일시, 전출항지, 차항지, 계선지)를 과거 AIS 빅데이터와 연결시켜 과거 항적 중 가장 가까운 항적을 찾고자 하였다. 그리고 당시 소요 시간을 반영하여 12개의 시간대별로 어느 시점에 어느 위치 구간에 선박들이 놓이게 될지 예측하였고, 특히 입출항 시기의 적절성에 핵심이 되는 13개로 모델링된 영역에 몇 개의 선박들이 항로를 지나는지에 따라 혼잡도(원활, 혼잡, 정체)를 구분하였다. 또한, 본 연구에서는 단기적 관점에서 실제 AIS가 수신된 후에도 유사한 항적을 검사해가며 혼잡도를 예측하고자 하였고, 이러한 장단기적 혼잡도 예측을 통해 미래 자율운항선입출항 지원 서비스의 안전과 그 적절성을 제공하고자 하였다.