• Title/Summary/Keyword: marine Safety

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A Study on Traffic Safety Assessments for Fishing Vessels Near the Southwest Sea Offshore Wind Farm

  • Yoo, Sang-Lok;Jeong, Jae-Yong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.23 no.3
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    • pp.231-241
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    • 2017
  • The purpose of this study was to analyze traffic safety assessments for fishing vessels near the southwest offshore wind farm. This study applied a collision model for safety assessment. It also involved a spatiotemporal analysis of vessels engaged in fishing to identify fishing hotspots around the offshore wind farm. This study used data from fishing vessel location transmission devices gathered over 1 year in 2014. As a result, in September, when the average number of vessels engaged in fishing is high, 62 ships were operating in fishing section 184-6 and 55 ships in section 184-6. In addition, in fishing sections 184-8 and 192-2, where an offshore wind farm was located, there were 55 and 38 ships operating, respectively. As the recovery period for a seaway near wind farm turbines is 55 years, it was determined that safety measures are required in order to reduce collision frequency while allowing fishing vessels to navigate through offshore wind farms. Meanwhile, the return period of Seaway B between the groups of generators considered was 184 years. A safety zone for offshore wind farms should be installed covering a distance of at least 0.3 NM from the boundary of turbines. Then, the collision return period was derived to be close to 100 years. Through this traffic safety assessment, it has been concluded that such measures would help prevent marine accidents.

A Study on Improvement of Criteria for Mooring Safety Assessment in Single Point Mooring

  • Lee, Sang-Won;Kim, Young-Du
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.25 no.3
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    • pp.287-297
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    • 2019
  • The recent increase in crude oil trading has led to an increase in the workings of SPM for crude oil carriers. VLCCs generally encounter difficulty entering port due to limitations in terms of sea depth and maneuverability. The SPM is a system that allows mooring to the buoy located in the outer sea for such vessels. However, the buoy is more affected by relatively external forces because of their of shore location. Therefore, the safety assessment of SPM is particularly important as it can lead to large oil pollution disasters in the event of SPM accidents. Despite this, in the implementation of the Marine Traffic Safety Audit Scheme in Korea, there exists no guidance for SPM. In this study, a SPM mooring safety assessment is performed using OPTIMOOR, a numerical analysis program, so as to understand the mooring characteristics of SPM. As a result, it is confirmed that the tension of mooring lines and hull movement in the SPM are greatly affected by the encounter angles with external forces. In addition, it is found that the maximum tension of the mooring line is elevated as the water depth becomes shallower through sensitivity analysis. According to SPM characteristics, which has a large influence on the encounter angle, this study has proposed an amendment to setting criteria in the implementation of the Maritime Traffic Safety Audit Scheme which could improve the reliability and accuracy of mooring safety assessments.

Construction Processing Analysis of Domestic Bridges Crossing Navigable Waterways and Improvements (국내 항만횡단 해상교량의 건설 절차 분석 및 개선방안)

  • Lee, Yun-Sok;Cho, Ik-Soon;Park, Young-Soo;Park, Jin-Su
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.15 no.2
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    • pp.119-125
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    • 2009
  • Recently the construction of bridges crossing navigable waterways is being promoted aiming at expanding social infrastructure and optimizing the overland routes through private investment. The construction, however, tends to focus on more the commercial requirements than the marine safety and efficient port management that it has a big risk not only to fail in ensuring the safety of ship traffic, but also to muse some severe conflicts between the parties concerned. These problems result from the lacking of standards about the design guidelines and discussing process considering the marine traffic safety when designing bridges. This research attempts to show the problems mused by bridge construction and suggest the standard discussing process through the survey and process analysis on Kwangyang Bridge and Incheon Bridge.

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A Study on Seasonal Variation in Marine Traffic Congestion on Major Port and Coastal Routes (주요 항만 및 연안항로의 계절별 해상교통혼잡도 변화에 관한 연구)

  • Kang, Won-Sik;Song, Tae-Han;Kim, Young-Du;Park, Young-Soo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.23 no.1
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    • pp.1-8
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    • 2017
  • In this study, a congestion assessment was conducted to verify seasonal differences in congestion for major coastal traffic routes and fairways in major ports with GICOMS Data for 7 days without issuing a special weather report. As a result, a maximum of 11 % and 82 % are shown, with an average of 3.5 % and a 30 % seasonal difference for hourly average congestion and peak time congestion. Therefore, seasonal differences for the target area should be taken into consideration to perform further congestion assessments, particularly for maritime traffic safety assessments, and keen attention should be given to setting up safety measures against congestion.

A Study on Road Map for Transfer of Maritime Safety Technology (해사안전기술의 대개도국 이전을 위한 로드맵 작성에 관한 연구)

  • Choi, Jin-Yi;Kim, Sang-Gu;Cho, Dong-Oh;Oh, Se-Woong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.16 no.1
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    • pp.93-99
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    • 2010
  • Republic of Korea is the first country which received international aids, h1s become a member of DAC, and recently has strengthened the international aids policy through ODA(Official Development Assistance). Korea ODA has focused on the area of education, social infrastructure, etc., but not on maritime affairs. However, since Korea has become a maritime country and a member of "A Group" council of IMO, the international shipping community including IMO strongly requests Korea to transfer Korea's maritime safety technology to developing countries for the sake of international maritime safety and marine environment protection. In this study, the direction of road map for effective transfer of maritime safety technology and marine environment protection technology was presented. The strategy for implementation of the suggested road map was proposed as well.