• Title/Summary/Keyword: Marine Traffic Flow

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A Study on the Navigational Conditions in the Ulsan Approaching Waters (울산항의 항행환경 조사.분석)

  • Jeong, Jae-Yong;Kim, Cheol-Seung;Park, Young-Soo;Jeong, Ki-Nam
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.14 no.3
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    • pp.211-217
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    • 2008
  • Natural environment, topographical conditions and marine traffic flows were investigated and questionnaire surveys were performed for the purpose of understanding the cause of marine accidents. The frequent cases of ships' dragging have happened at the anchorages of E-1, E-2 and E-3. The anchorage area is insufficient for the accommodation of a number of ships, the dolphins at the nearby piers are located near a narrow fairway. SBMs' are positioned too close to the fairway. It shows that many crossing marine traffic flows occur in all areas of the port. Marine casualties are concentrated mainly at No. 1 fairway, M1-M7 waters close to the dolphins and Gwanjeolgot, "E" anchorage and the waters close to the fairway "come and go" areas. The marine traffic flow is mainly caused by the ships' movement at the inter-port and most of the ships are the dangerous cargo carriers. And small ships like the tug-barge are moving disorderly in the ports. Furthermore, the fairway‘s layout is crossing each other. Questionnaire surveys of the users and experts shows that the LANBY that can distinguish the fairway of "come and go" ports is required.

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Analysis on the Marine Traffic Flow Characteristics for Gamcheon Harbor (감천항 해역에 대한 해상교통특성 분석)

  • Kim Jun-Hoon;Gug Seung-Gi
    • Journal of Navigation and Port Research
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    • v.30 no.5 s.111
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    • pp.397-404
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    • 2006
  • Gamcheon harbor was developed as a multipurpose port to mix processing functions of exclusive piers for bulk cargo such as marine products, domestic cargoes. Since the container terminal was opened in 1997, maximum $40,000\sim50,000$ DWT containership have been incoming and outgoing. However, bemuse the breakwater entrance in Gamcheon harbor is narrow and the crossed vessels are ever-present at breakwater front, marine accident danger is high that grasping traffic characteristics is required in reply. Therefore marine traffic characteristics were analyzed for Gamcheon harbor and Gamcheon approaching waters, included the track and traffic volumes of peak hours period in inbound/outbound and front sea area of the harbor in present.

Analysis on the Marine Traffic Flow Characteristics for Gamcheon Harbor (감천항 입.출항에 관한 해상교통특성 분석)

  • Kim Jun-Hoon;Gug Seung-Gi
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2006.06b
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    • pp.137-146
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    • 2006
  • Gamcheon Harbor was developed as a multipurpose port to mix processing functions of exclusive piers for bulk cargo such as marine products. domestic cargo. Since the container terminal was opened in 1997. maximum $40,000{\sim}50,000$ DWT containership have been incoming and outgoing. However, because [he breakwater entrance in Gamcheon Harbor is narrow and the crossed passing of ship is ever-present at breakwater front, marine accident danger is high that grasping traffic characteristics is required in reply. Therefore marine traffic characteristics were analyzed for Gamcheon Harbor, included the track and traffic volumes of peak hours period in inbound/outbound and front sea area of the harbor in present.

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A Basic Study on Establishment of Sea Trial Prohibition Waterway Based on Marine Traffic Survey (해상교통량 조사 기반 시운전금지해역 설정 기초 연구)

  • Park, Young-Soo;Kim, Jin-Kwon;Kim, Jong-Sung;Kim, Jong-Soo;Lee, Yun-Sok;Park, Sang-Won
    • Journal of Advanced Marine Engineering and Technology
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    • v.39 no.3
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    • pp.318-325
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    • 2015
  • Korea has very strong shipbuilding industry in the world, so many new ships are constructed in Korean shipyards. These built vessels are carrying out sea trial at sea before delivering to shipowner, and sea trial ships cause navigation risk to other passing vessels to accomplish sea trial tests as quick turning, zigzag maneuvering and crash astern etc. in traffic congestion conditions. It occurred more than 1 collision accident related sea trial for recent 5 years. It has been increased about 30% of risk because of navigation of sea trial vessel by marine traffic flow simulation. This paper analyzed marine traffic density surveyed by AIS data for 7 days, and investigated position of marine accidents for 5 years in Korean coastal waterway, it established the sea trial prohibition areas as 10/100 level of total marine traffic volume, which is considered no danger for ship operator. This analyzed maritime safety law for setting of the prohibition waters to propose the basic legal system. It makes contribution to marine pollution prevention by setting of the sea trial prohibition water to improve the ship's navigation safety.

Development of Remote Radar/AIS Network System for Observing and Analyzing Vessel Traffic in Tokyo Bay

  • Hagiwara, Hideki;Shoji, Ruri;Tamaru, Hitoi;Liu, Shun;Okano, Tadashi
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.1
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    • pp.151-156
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    • 2006
  • Accurate vessel traffic observation is indispensable to carry out vessel traffic management, design of vessel traffic route, planning of port construction, etc. In order to observe the vessel traffic accurately without many efforts such as the use of a ship or car equipped with special radar observation system and the preparation of observation staff, the authors have been developing completely automated remote radar/AIS network system covering the main traffic area in Tokyo Bay. The composite radar image observed at Yokosuka and Kawasaki radar stations with AIS information can be seen on web site of Internet. In addition to the development of radar/AIS observation system, the software to analyze observed vessel traffic flow has been developed. This software has various functions such as automatic tracking of ship's positions, automatic estimation of ship's size, automatic integration of radar image and AIS data, animation of ships' movements, extraction of dangerous ship encounters, etc. The configuration and functions of the developed remote radar/AIS network system are shown first in this paper. Then various functions of the software to analyze vessel traffic are introduced, and some analyzed results on the vessel traffic in Tokyo Bay are described demonstrating the effectiveness of the developed system.

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A Study on Establishment of Traffic Separation Scheme for Adjacent Sea Areas on Yosu Port (여수 인근해역의 통항분리대 도입에 관한 연구)

  • Park, Seong-Hyun;Jeong, Dae-Deuk;Jong, Jae-Yong;Kim, Chol-Seong;Ahn, Young-Sup
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.29 no.1
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    • pp.223-227
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    • 2005
  • In adjacent sea areas of Yeosu, there are many crossing traffics between eastbound and westbound vessels. Traffic congestion is increasing in sea area of east Sori island and near Yokji Island. In this research, we established TSS near Yeokmando Areas and new recommended route which connected to Seopdo west recommended route to reduce meeting traffic between eastbound vessels and westbound vessels.

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Estimation of the Traffic Flow in the Korea Coastal Waterway by Computer Simulation (우리나라 연안의 해상교통관제시스템 설치를 위한 기초연구 시뮬레이션에 의한 우리나라 연안의 해상교통량 추정)

  • 구자윤;박양기;이철영
    • Journal of the Korean Institute of Navigation
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    • v.12 no.1
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    • pp.85-112
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    • 1988
  • From the point of view of safety of life and property at sea and the protection of the marine environment, the Vessel Traffic Management System along the Korea coastal waterway is inevitably introduced. But the establishing priority per area must be evaluated under the restricted budget. In this case, the estimated traffic flow has a major effect on priority evaluation. In the former paper , an algorithm was proposed for estimating the trip distribution between each pair of zones such as harbours and straits. This paper aims to formulate a simulation model for estimating the dynamic traffic flow per area in the Korea coastal waterway. The model consists of the algorithm constrined by the statistical movement of ships and the observed data, the regression analysis and the traffic network evaluations. The processed results of traffic flow except fishing vessel are summarized as follows ; 1) In 2000, the traffic congestions per area are estimated, in proportion of ship's number (tonnage), as Busan area 22.3%(44.5%), Yeosu area 19.8%(11.2%), Wando-Jeju area18.1%(6.8%), Mokpo area 14.9%(9.9%), Gunsan area 9.1%(9.3%), Inchon area 8.1%(7.7%), Pohang area 5.5%(8.5%), and Donghae area 2.2%(2.1%). 2) For example in Busan area, the increment of traffic volume per annum is estimated 4, 102 ships (23 million tons) and the traffic flow in 2000 is evaluated 158, 793 ships (687 million tons). 3) consequently, the increment of traffic volume in Busan area is found the largest and followed by Yeosu, Wando-Jeju area. Also, the traffic flow per area in 2000 has the same order.

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A Study on design of anchorage at approach waters of Wan-do port (완도항 인근 수역 정박지 지정 검토 연구)

  • Im, Nam-Kyun;Kim, C.S.;Yang, H.S.;Shin, M.K.;Yoon, J.Y.
    • Proceedings of KOSOMES biannual meeting
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    • 2007.05a
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    • pp.181-185
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    • 2007
  • Now it is said that the insufficency of the designated anchorage for ships in approaching waters of Wan-do port is one of reasons for marine safety accidents, when they encounter rough weather near the port. This research examined geographical feature in approaching areas of Wan-do port and suggested appropriate mate weather anchorage. The situations of fishing nets were investigated Marine vessel traffic flow was also examined The optimal anchorage was suggested considering these results.

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A Study on the Investigation of Marine Traffic Environments for Incoming and Outgoing Routes on Yeosu, Gwangyang Bay (여수, 광양항 출입항로의 해상교통환경 조사에 관한 연구)

  • Kim Chol-Seong;Jong Jae-Yong;Park Young-Soo
    • Journal of Navigation and Port Research
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    • v.30 no.1 s.107
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    • pp.1-8
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    • 2006
  • Recently, many ships such as VLCCs, dangerous cargo ships, high speed ferry boats are visiting Yeosu, Gwangyang harbor. The traffic volume of the year 2003 has increased as many as 2.5 times of 1988. However there is no suitable ships' routeing system which takes account of today's traffic situations in this area This study aims at the settling of hazardous factors to mitigate the danger to vessels in Yeosu${\cdot}$Gwangyang bay and to secure the safety of maritime environment.