• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.426-428
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• 2022

해상 교통량을 정량적으로 평가하고 추출하기 위한 방법으로 선박 AIS 데이터 기반의 밀집도 분석을 활용하고 있다. 밀집도는 단위시간 당 단위면적에 분포하는 선박 통항량을 계산한 것으로, 일반적으로 그리드 셀 내에 존재하는 선박 항적 포인트 개수, 항적도 라인 길이, 선박 척수 등을 계산한 밀집도 분석 방법과 커널 밀도 추정(Kernel Density Estimation) 방법 등이 있다. 하지만, AIS 데이터의 특징상 선박 속력에 따라 수신 주기가 다르기 때문에 항적이 등간격으로 나타나지 않는 문제점이 있으며, 선박의 이동과 시간의 속성으로 인해 각각의 밀집도 분석 방법은 한계점이 존재한다. 따라서 본 연구에서는 실측 AIS 데이터를 이용하여 다양한 방법의 선박 밀집도 분석을 수행하고 이를 비교하였다. 그 결과, 항적도 라인 길이에 의한 밀집도 분석이 가장 정량적인 방법으로 나타났으며 이를 통항 척수로 변환할 수 있는 선박 밀집도 분석을 개선방안으로 제안한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.314-316
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• 2012

울산 현대중공업 해양2공장 H-Dock에서 건조중인 Goliath FPSO의 원활한 입출거를 위하여 기존의 폭 90m인 Dock Gate를 115m로 확장하고, Gate 북측의 기존안벽을 25m 철거하여 신설안벽을 축조하고 있다. 이 연구에서는 H-Dock 전면수역을 이용하는 선박의 통항 안전성을 검증하고, 해상교통현황 조사, 해상교통현황 측정, 해상 이용자 및 전문가 의견수렴을 거쳐 울산항 제1항로를 횡단하여 현대중공업을 입출하는 선박 Block 운반 예부선들의 교통흐름에 미치는 영향을 분석하고, 신설안벽의 전면수역인 M정박지에 입출하는 선박들의 통항안전을 확보하기 위한 종합적인 안전대책을 제시한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.188-190
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• 2013

국제 해상물동량(해상화물 수송량은 10년 사이에 매년 평균 4.3%씩)의 증가에 따라 해양사고의 발생 빈도도 높아지고 있으며, 사고의 규모도 대형화 되고 있는 추세이다. 이에 따라 해상에서의 선박 위험도 저감을 위한 많은 시스템들이 개발/운영되고 있지만, 대부분 실시간 위치정보를 기반으로 충돌위험 등을 분석하고 있고, 선박간의 충돌 외의 선박의 주변 환경에 대한 고려는 미비한 실정이다. 실제 해상에서의 통항량 및 10년간 사고를 분석하여, 충돌등 사고가 많은 남동부 해역(여수/통영/진해)의 통항패턴, 교차구역 및 해양사고 특성을 분석해보고, 이에 따라 Sector별 특징적 집중 관제 방안을 마련하여, 선제적 안전 서비스 방안을 연구하고자 한다.

• Journal of Navigation and Port Research
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• v.32 no.10
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• pp.743-750
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• 2008

Recently Bridges crossing waterway are constructed in navigable waterway, so marine accidents near bridges navigable waterway often occurred bemuse that has affect dangerous element for. This paper analysed the necessary environmental factors to navigate safely near bridges and how to set up the environmental factors. Marine accidents elements occurred near bridges relate to span of bridge, size of navigating ship, length of straight way and traffic volume except mistake of mariners. As results of marine accident parameter analysis, Span of bridge is necessary more than 300m at least based on marine accident's analysis, and in case of more than ship's Length 150m, span of bridge is necessary more than 500m, $3{\sim}4L$(L; Ship's Length). Length of straight way before bridge is necessary more than 8L to minimize the marine accident.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.7
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• pp.767-774
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• 2017

Maritime traffic safety audits (MTSA) were enacted in order to ensure marine traffic safety throughout changes or the construction of water facilities, port facilities, etc. After the introduction of MTSA, the scope of subject vessels was restricted to an LOA of more than 100 m or a maximum speed of more than 60 knots as of 2014. In this study, the scope of subject vessels was re-examined in comparison with specific marine traffic safety areas and tanker prohibited areas identified in the maritime safety act. Furthermore, the state of subject vessels and exception cases for MTSA were also analyzed. As a result of these analyses, MTSA were deemed necessary for dangerous goods carriers of more than 1,000 G/T in specific marine traffic safety areas and dangerous goods carriers of more than 794 G/T in tanker prohibited areas. Finally, the necessity of further review was suggested given the present scope of subject vessels.

• Journal of Navigation and Port Research
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• v.30 no.1 s.107
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• pp.9-15
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• 2006

At the adjacent sea area of Busan Central Wharf, a variety of vessels, such as middle-large passenger ships, small hugh speed crafts, container ships, cargo ships and working boats as well as small miscellaneous vessels are freely sailing comparatively without special rules and marine traffic control. In this research, we analyzed traffic stream and navigational characteristics cf main traffic route based on statistics and distribution of tracks by ship's type and tonnage cf the passing vessels after conducting marine traffic survey twice using exclusive software. We examined the traffic safety of the passing vessels by classifying the sea area by each function based on the analysis about this traffic situation, and analyzing the effect by designating 'Inner passage'. We also studied the plan for the effective rearrangement cf Central Wharf considering basically the traffic safety of arrival and departure in a point of view of navigators.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2005.10a
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• pp.103-109
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• 2005

At the adjacent sea area of Busan Central Wharf, a variety of vessels, such as middle-large passenger ships, small fast sailing ships, container ships, cargo ships and working ships as well as small miscellaneous vessels are freely sailing comparatively without special steering and sailing Rules and marine traffic control because exclusive wharfs in accord with their purpose and use have been arranged in each wharf. In this research, we analyzed traffic stream and navigational characteristics of main traffic route based on statistics and distribution of tracks by ship's type and tonnage of the passing vessels after conducting marine traffic survey twice using exclusive software by targeting the sea area during the period of time. We examined the traffic safety of the passing vessels by classifying the sea area by each function based on the analysis about this traffic situation, and analyzing the effect by designating 'Buknea passage'. We also studied the plan for the effective rearrangement of Central Wharf considering basically the traffic safety oif arrival and departure in a point if view of navigators.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.5
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• pp.439-446
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• 2017

The Maritime Safety Act established restrictions for the passage of oil tankers, prohibiting vessesl carrying more than 1,500 kiloliters of oil or 1,500 tons of a hazardous liquid substance. Prohibited vessels that do not satisfy the restrictions are allowed to enter and depart from a nearby port from the outer sea area to minimize the time and distance the oil tanker must navigate in the prohibited area. Therefore, such regulation should not be construed as referring to inshore traffic. In this study, the traffic volume of coastal tankers that do not use the approaching channels for specific sea areas near Yeosu and Gwangyang Port was analyzed, and the cargo loads of these ships were investigated. The results of this study should be used to allow tankers to minimize the time and distance of navigation in prohibited areas. According to the survey, 16 vessels, 51.6 % of the 31 vessels using inshore traffic included in the study, were loaded with more than 1,500 tons of cargo. This is not appropriate according to the legislation for oil tanker passage. Therefore, in this study, sea routes have been proposed that connect with the approaching channels of specific sea areas, from the outer sea areas of restricted passages. Regulations have also been proposed for the entry and departure of oil tankers around Yeosu and Gwangyang Port.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2021.11a
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• pp.10-12
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• 2021

유선은 수상에서 고기잡이, 관광, 그 밖의 유락하는 사람을 승선시키는 것 등 「해운법」을 적용받지 아니하는 유선사업에 종사하는 선박으로, 안전관리 부분의 경우 해양경찰청에서 담당하고 있다. 선령기준 초과 유선의 선박검사 및 선박관리평가 기준을 마련하여 해양경찰청에서는 노후 유선에 대한 안전관리를 지속적으로 평가 하고 있으나, 기존의 여객운송사업의 선박관리평가 기준을 준용하여 평가함에 따라 내항만을 통항하고 출발지와 도착지가 동일한 관광등의 유람 목적 등 유선의 특수성 등을 반영하지 못하고 있다. 본 연구에서는 유선의 통항 특성과 일반적인 운영 환경등을 고려하여 유선에 적합한 선령기준 초과 유선의 선박 검사 및 관리평가 기준 마련의 필요성을 제안하였다.

• 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.