• Title/Summary/Keyword: Marine traffic congestion

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Analysis of Correlation between Marine Traffic Congestion and Waterway Risk based on IWRAP Mk2 (해상교통혼잡도와 IWRAP Mk2 기반의 항로 위험도 연관성 분석에 관한 연구)

  • Lee, Euijong;Lee, Yun-sok
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.25 no.5
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    • pp.527-534
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    • 2019
  • Several types of mathematical analysis methods are used for port waterway risk assessment based on marine traffic volume. In Korea, a marine traffic congestion model that standardizes the size of the vessels passing through the port waterway is applied to evaluate the risk of the waterway. For example, when marine traffic congestion is high, risk situations such as collisions are likely to occur. However, a scientific review is required to determine if there is a correlation between high density of maritime traffic and a high risk of waterway incidents. In this study, IWRAP Mk2(IALA official recommendation evaluation model) and a marine traffic congestion model were used to analyze the correlation between port waterway risk and marine traffic congestion in the same area. As a result, the linear function of R2 was calculated as 0.943 and it was determined to be significant. The Pearson correlation coefficient was calculated as 0.971, indicating a strong positive correlation. It was confirmed that the port waterway risk and the marine traffic congestion have a strong correlation due to the influence of the common input variables of each model. It is expected that these results will be used in the development of advanced models for the prediction of port waterway risk assessment.

A Study on Evaluation of Marine Traffic Congestion based on Survey Research in Major Port (주요항만의 실측조사 기반 해상교통혼잡도 평가 연구)

  • Yoo, Sang-Rok;Jeong, Cho-Young;Kim, Chol-Seong;Park, Sung-Hyun;Jeong, Jae-Yong
    • 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.

Estimation of Marine Traffic Volume Considering Ship Speed (선박의 속력을 고려한 해상교통량 평가에 관한 연구)

  • Kwon, Yu-Min
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.24 no.4
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    • pp.381-388
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    • 2018
  • This study proposes marine traffic volume estimation method considering ship speed, a factor excluded from the existing method. Ten days of GICOMS marine traffic data from Pyeongtaek and Dangjin ports was applied to this study. As a result, converted traffic volume with the proposed estimation method showed an increase of 4.41 (${\pm}0.99$) times or decrease of 0.59 (${\pm}0.04$) at most, compared with the existing estimation method. Average marine traffic congestion for each time applying the proposed estimation method showed an increase of 1.43 (${\pm}0.10$) compared with the existing estimation method. The maximum marine traffic congestion for each time was 1.62 (${\pm}0.34$) times higher compared with the existing estimation method. Marine traffic peak time, defined as the highest point of marine traffic congestion, was evaluated to be different from that of the existing method because of distribution of vessel speed. In conclusion, considering ship speed is necessary when estimating marine traffic volume to produce a practical estimate of marine traffic capacity.

A Study on the Assessment of the Marine Traffic Congestion and the Improvement of a Technical Standards (해상교통혼잡도 평가현황 분석을 통한 진단기술기준 개선연구)

  • Um, Han-Chan;Jang, Woon-Jae;Cho, Kyung-Min;Cho, Ik-Soon
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.18 no.5
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    • pp.416-422
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    • 2012
  • To prevent serious maritime accident and eliminate the cause of the potential maritime accidents, Maritime Safety Audit Scheme was formally institutionalized through amendment of Maritime Traffic Safety Act(May 27, '09). At the initial step of the enforcement of the law, it has risen the necessity of amending the present institution concerning with the range of applicable business, method of practice, detailed technical standards in the assessment articles, etc. Among them, the assessment of marine traffic congestion has been practiced as a mandatory assessment article, but it is analyzed that the assessment doesn't reflect current variation of ships' size and its speed. By analyzing the status of assessments on marine traffic congestion so far and collecting experts' opinion, this paper suggests draft amendments to improve technical standards on the assessment of marine traffic congestion.

A Simulation Study on the Marine Traffic Congestion in Pusan Port (부산항 해상교통 혼잡도 평가에 관한 연구)

  • 여기태;이홍걸
    • Journal of Korean Port Research
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    • v.12 no.2
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    • pp.177-194
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    • 1998
  • In Pusan port, the studies which analyze container cargo volumes by using forecasting methods and research about container logistics system, etc., have been continuously carried out. But, in Pusan port, the study on an evaluation of traffic congestion has been scarcely performed until now. Especially, when changing and extending a berth, or constructing a new port, it is very important to examine this field. And it should be considered. Thus, this paper aims to analyze the effect of ship traffic condition in the year 2011, to evaluate marine traffic congestion according to changing ship traffic volumes in Pusan port. To analyze it, we examined the results by simulation method.

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An evaluation of Marine Traffic Congestion in Pusan Port by Simulation Method (부산항 해상교통 혼잡도 평가에 관하여)

  • 석상문;여기태;이홍걸;이철영
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 1998.10a
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    • pp.323-329
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    • 1998
  • In Pusan port, the studies, which analysis container cargo volumes by using forecasting methods and research about container logistics system, etc., have been continuously performed. But, in Pusan port, this study on an evaluation of traffic congestion has been scarcely performed until now. Especially, when changing and extending a berth, and constructing a new port, it is very important to examine this field. And it should be considered. Thus, this paper aims to analysis the effect of ship traffic condition in 2011, to evaluate marine traffic congestion, according to changing ship traffic volumes in Pusan port. To analysis it, we used simulation method and examined the results

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A Study on the Standard Ship's Length of Domestic Trade Port (국내 무역항의 표준 선박길이에 관한 연구)

  • Lee, Yun-Sok;Ahn, Young-Joong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.19 no.2
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    • pp.164-170
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    • 2013
  • With the introduction of increasingly large-sized ships, the conditions of main domestic port facilities remain the same as in the past. So, there is high probability that marine traffic congestion can occur at the certain ship's routes. The standard ship's length used to assess the marine traffic congestion of domestic trade port is 70 meters. It has been in use for the last 30 years, so, its usefulness is highly recommended for review. This study deeply analyzes the tendency of ship's dimensional changes according to recent enlargement of ship's size by utilizing the particulars of 60,000 ships saved in domestic Port-MIS database and suggests the standard ship's length by figuring out the correlation between length of ship and gross tonnage. In addition, the basis of statistical data on the ship's tonnage in domestic trade over the last five years suggests the standard ship's length by deriving the reference point of cumulative incidences that occupy more than over 50 %, except for small vessels. It is necessary to consider the characteristic of each domestic trade port before the actual application of suggested standard ship's length.

A Status of the Marine Traffic Congestion Assessment and Research for Improving a Technical Standards (기술논문 - 해상교통혼잡도 평가의 현황과 기술 기준 개선을 위한 연구)

  • Um, Han-Chan;Jang, Woon-Jae;Cho, Ik-Soon
    • Journal of Korea Ship Safrty Technology Authority
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    • s.32
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    • pp.72-83
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    • 2012
  • 중대한 해양사고를 예방하고 잠재적인 해양사고의 원인을 제거하기 위하여 해상교통안전진단 제도가 "해상교통안전법" 개정('09. 5. 27)을 통해 정식 제도화되었다. 법 시행 이후 수행된 연구 중 하나인 '해상안전진단제도의 기술기준 및 고도화 연구'에서는 관련 평가 중 하나인 해상 교통혼잡도 평가에 사용되는 환산교통량 및 표준선이 현재 선박의 대형화 및 고속화 추세를 반영하고 있지 못함을 제시, 개선의 필요성을 말하였다. 이에 먼저 관련한 일본의 이론과 국내 진단대행업자의 평가 이론 현황을 파악 분석한 바, 이론 및 진단대행업자 별로 분석요소들을 다르게 사용하고 있어 표준화의 필요성을 발견하였고 또한 2010년 선박 입출항 통계를 이용한 선박현황을 분석한바 이론에서 사용하는 표준선과는 상당이 차이가 있음이 나타났다. 이후 관련 개선을 위한 기술기준(안)을 제안하여 전문가들의 의견 수렴과 이를 분석한 결과, 비록 소수의 상반된 의견이 있었지만, 표준선 변경에 따른 환산교통량 변화가 해상교통혼잡도에 미치는 영향은 그리 크지 않음을 알 수 있었다. 마지막으로 평가관련 개선을 위한 최종 기술기준(안) 및 앞으로 발전방향을 제시하여 해상교통 혼잡도 평가 발전을 위한 연구기반을 마련하고자 하였다.

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