• Proceedings of KOSOMES biannual meeting
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• 2009.06a
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• pp.9-15
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• 2009

On-Scene Commander's quickly discernment is very important in Catastrophic Oil Spill. The Korea carring out multiagency to catastrophic oil spill. but It cannot communication to other agency and happened to operation empty and duplications. The United State enforced Incident Command System/Unified Command (ICS/US) on National Incident Management System in 2008. The Korea Government must be preparation Unified Command System include Non-Government and an oil refining company.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.59 no.1
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• pp.19-27
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• 2023

The interest in greenhouse gases (GHG) emitted from all industries is emerging as a very important issue worldwide. This is affecting not only the global warming, but also the environmentally friendly competitiveness of the industry. The fisheries sector is increasingly interested in greenhouse gas emissions also due to the Paris Climate Agreement in 2015. Korean industry and government are also making a number of effort to reduce greenhouse gas emissions so far, but the effort to reduce GHG in the fishery sector is insufficient compared to other fields. Especially, the investigation on the GHG emissions from Korean fisheries did not carry out extensively. The studies on GHG emissions from Korean fishery are most likely dealt with the GHG emissions by fishery classification so far. However, the forthcoming research related to GHG emissions from fisheries is needed to evaluate the GHG emission level by species to prepare the adoption of Environmental labels and declarations (ISO 14020). The purpose of this research is to investigate which degree of GHG emitted to produce the species (swimming crab and snow crab) from various fisheries. Here, we calculated the GHG emission to produce the species from the fisheries using the life cycle assessment (LCA) method. The system boundary and input parameters for each process level are defined for LCA analysis. The fuel use coefficients of the fisheries for the species are also calculated according to the fuel type. The GHG emissions from sea activities by the fisheries will be dealt with. Furthermore, the GHG emissions for producing the unit weight species and annual production are calculated by fishery classification. The results will be helpful to establish the carbon footprint of seafood in Korea.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.60 no.2
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• pp.101-113
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• 2024

This study investigated the species composition and community structure of aquatic organisms captured using coastal beam trawling in Gomso Bay, Jeollabuk-do, from January to December 2022. Throughout the experimental period, a total of 20,246 individuals belonging to 94 marine species were captured, with a combined biomass of 602,828 g. Fish exhibited the highest abundance, comprising 56 species, followed by crustacea (21 species), bivalvia (8 species), cephalopoda (5 species), gastropoda (3 species), and holothuroidea (1 species). The dominant species was Leiognathus nuchalis, constituting 14.0% of the total individuals, followed by Portunus trituberculatus at 12.1%, Oratosquilla oratoria at 10.4%, Crangon hakodatei at 9.9%, and Metapenaeus joyneri at 7.9%. The diversity index ranged from 1.72 to 2.55, with the lowest diversity observed in March and the highest in July. Cluster analysis based on species composition of the 27 most common species showed that aquatic organisms were divided into three groups: spring and summer organisms (Group A) and summer organisms (Group B) and autumn and winter organisms (Group C).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.06a
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• pp.200-202
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• 2012

본 연구는 연안VTS의 역량강화를 위한 방안으로 항만VTS센터에 해양경찰청 소속 직원 파견하여 합동근무를 확대시행하고 정보제공업무 위주의 현행VTS의 미비점을 보완하고, 관제통신 미청취, 항법 미준수 선박 등에 대한 계도 단속 등 현장집행능력의 강화에 따른 현황과 성과를 고찰하고자 한다. 연구방법으로는 VTS센터의 운영성과를 분석하는 방법과 파견업무 사례를 통한 실증적 연구방법을 적용하였다. 연구결과 현장집행력의 부재로 인한 긴급한 상황에 대처 능력이 미약한 집행력에 한계를 가지고 있었다. 더불어 2차사고 위험성이 있는 것으로 나타났으며 이에 대한 대응방안으로 관제센터에 부속된 전담선박(관제정)의 배치필요하다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.06a
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• pp.496-498
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• 2013

최근 항만을 비롯한 연근해에 해상교량이 계획되어 다수의 해상교통안전진단이 수행되고 있다. 해상교량의 안전진단에서 핵심적인 요소는 해상교량의 형하고와 주경간장에 따른 항로 폭이 될 것이다. 해상교량의 형하고와 항로 폭을 결정하는데 있어 어떤 선박을 대상선박으로 하느냐, 대상선박의 제원을 어떻게 볼 것인가에 따라 해상교량의 시설한계가 크게 달라진다. 따라서 본 연구에서는 최근 수행되고 있는 해상교량에 대한 해상교통안전진단에서 이슈가 되고 있는 사례를 분석하였다. 첫째 삼산 연육교의 대상선박은 대상해역을 통항하지 않은 유도탄고속함(570톤)과 통항빈도가 거의 없는 예인선열이 이슈가 되고 있다. 둘째, 사양-와교의 대상선박은 통항한 적이 없는 여수해양경찰서가 보유한 최대선박인 640톤급 517함을 대상으로 하고 있다. 이는 해상 교량의 시설한계의 문제만이 아니라 해상교통안전진단 사업인가 안전진단 보고서 제출면제 사업인가에 대한 논란을 야기할 수 있다. 본 연구에서는 다양한 여건의 해상교량의 안전진단에 대한 안전진단대행기관의 의견을 수렴하여, 추후 통일된 선박 및 선박의 제원에 대한 통일된 기준안을 마련하여 안전진단시 통일된 기준을 사용하기를 제안한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.33-34
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• 2019

대부분의 나라에서는 어선의 위치발신장치를 이용하여 어선 조업상황을 모니터링 한다. 우리나라도 어선의 위치발신장치를 이용하여 어선 조업량, 불법조업 유무를 판별한다. 현재까지는 어선의 불법조업 유무 판별은 어선의 위치정보 기반으로 이루어 졌으나, 허가받지 않는 어구를 사용하는 불법조업에 대한 판별은 불가능 하였다. 이에 본 논문에서는 어선 항적과 조업면허 데이터를 이용하여 데이터 기반의 어선 조업 판별모델을 개발하고자 한다. 이를 위해 어선 항적데이터를 시계열 단위로 전처리하여 학습 이미지들을 생성하고, 해당 어선의 조업면허 정보를 레이블로 하여 학습 데이터를 제안하는 딥러닝 모델에 적용한다. 제안하는 방법의 검증을 위해 1년 동안 제주 주변해역에서 조업하는 어선의 선박자동식별장치의 항적데이터를 수집하여 실험을 하였다. 실험 결과 제안한 방법의 분류정확도는 71.5%를 얻었다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.31-32
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• 2022

In Early vessels did not provide an exact equation for preventig the capsizing vessels. On land, many vehicle rollover prevention technologies using the steady-state Conrning Equations were developed, which showed better performance than the exiting method at sea. For better performance, It is proposed to improve safety mangement when turning vessel using the Ackerman geometic model-based Cornering Equations in this paper.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2022.06a
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• pp.33-35
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• 2022

빅데이터·인공지능 등 4차 산업혁명 기술은 교통·의료·환경 등 다양한 분야에서 기술개발을 추진하고 이미 많은 기술이 실제 활용되고 있다. 특히, 철도관제와 항공 관제분야에서도 인공지능 기반 시스템이 접목되어 운영되고 있으나 선박교통관제 분야는 현장에 접목되어 활용되는 기술은 극히 드물다. 선박교통관제사가 관제구역 내에서 적게는 수척, 많게는 수십척의 선박을 동시에 관제하며 발생할 수 있는 인적 과실을 줄이기 위한 인프라 구축은 선박의 안전확보를 위해 필수요소이다. 본 연구는 해양경찰청 선박교통관제기술개발단에서 자체 개발한 음주운항 자동탐지 시스템과 닻 끌림 자동탐지 시스템에 활용한 기술을 소개하고 향후 고도화 및 활용방안을 제시하고자 한다.

• Journal of Navigation and Port Research
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• v.45 no.4
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• pp.212-223
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• 2021

The objective of this study was to evaluate structural safety according to environmental conditions acting on the piping of offshore structure and the motion of the structure. As for conditions acting on the piping, the maximum and minimum temperature conditions were used to analyze the design conditions of N2 generator. The motion of the structure was calculated and applied according to the DNV(Det Norske Veritas) rule. Each condition was combined and a total of 26 load combinations were constructed according to thermal load, motion load, and presence or absence of pipe support. Analysis was performed using a commercial program MSC Patran/Nastran. Thermal analysis was performed by applying the steady-state method, Sol 153. Thermal-structural coupled analysis was performed using Sol 101, a linear-static method. As a result of the analysis, the stress tended to increase when temperature inside the pipe was lower in Set 1 and Set 2, when temperature was higher in Set 3, and when the temperature difference between the inside and outside of the pipe in Set 4 was increased. However, the sum of stresses in the condition with only temperature load and the condition with only the kinetic load did not show the same value as the stress in the composite load condition of two loads. That is, the influence of the motion load varied depending on the direction of motion, the arrangement of pipes, and the position of the support. Therefore, it is necessary to comprehensively consider the size and direction of the motion load acting on the piping, the arrangement of the piping, and the location of the pipe supports during the design of piping.

• Journal of the Korean Society of Marine Environment & Safety
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• v.28 no.5
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• pp.800-808
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• 2022

The International Maritime Organization adopted the interim standards for ship maneuverability in November 1993 for preventing collision of ships at sea and for protecting the marine environment, and based on the accumulated data, in December 2002, the established standards for ship maneuverability were adopted. However, the standards adopted are those at full load, even keel, and at least 90 % of the ship speed at 85 % of the ship's maximum power. Moreover, these standards have limitations in providing information on maneuverability under actual navigational conditions. Therefore, in this study, frequency analysis AHP analysis techniques were studied by consulting navigational officers, captains, and experts, who have significant knowledge on ship maneuverability, utilization of the current standards, and the information necessary for the operation of the actual ship. The results of this study confirmed that the necessary information on maneuverability for the navigational officer operating the vessel is information about the turning circle at a small angle of 5°-10° and z-test information at maneuvering speed, not sea speed. Additionally, in relation to speed control, additional information on deceleration inertia and acceleration inertia is needed than the information on the stopping ability at sea speed and full loaded condition. The derived results are considered to be useful as basic data for preparing guidelines for ship maneuverability necessary for navigational of icers who operate ships.