• Title/Summary/Keyword: 소형 어선

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Stability Characteristics based on Crane Weight of Small Fishing Vessels Under Standard Loading Conditions: Investigation Report of the Capsize Accident at Goseong Port (크레인 교체에 따른 표준재화 상태에서의 소형 어선의 복원성 특성 - 고성항 전복 사고 재결서 중심 -)

  • Kang, Dae Kon;Lee, Gun Gyung;Lee, Jun Ho;Han, Seung Hun
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.26 no.1
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    • pp.22-30
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    • 2020
  • In March 2016, a 6.67-ton fishing boat capsized owing to the loss of stability during crane operations. Capsizing occurs when a boat or ship is flipped over (or turned upside down) for reason other than accidents caused by collisions, contact, stranding, fire or explosion. Over the past nine years (2010-2018), capsize accidents have accounted for 2.34 % of all marine accidents and are gradually increasing. The loss of stability from improper shipping is the main cause of most capsizes, especially for small fishing vessels weighing 10 tons. According to the Fishing Vessel Act, small fishing vessels weighing less than a ton are exempted from inspections on stability and load cranes. This study analyzes the issue cited as the reason for the capsizing of the small fishing boat in Goseong, namely, the reduction of restoring moment due to increased weight of the crane. Fishing boats with similar loading conditions were modeled on the basis of re-determination, and their stability before and after the accident was assumed. The fishing boats with heavier cranes were found to be at higher risk of capsizing owing to the reduction of the restoring moment and the angle of deck immersion. Under standard loading conditions, the stability moments of fishing vessels are lesser during fishing, compared to when they depart from or arrive at the port.

A Study on the Development of Sweeping Arm System for Oil Recovery by Small Vessel (소형 선박을 이용한 기름방제용 스위핑 암 시스템 개발에 관한 연구)

  • Han, Won-Heui
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.19 no.2
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    • pp.219-224
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    • 2013
  • In the case of occurring marine oil pollution, it is the most effective way that to prepare all the necessary response resources in advance and to respond to incidents, but there are limits in reality. Therefore, may be an important alternative ways to use a fishing vessel registered in the affected area by massive marine oil pollution efficiently. In the United States and other developed countries, it is can be found that temporary response program by local fishing vessels(VOO program) has been developed and operated. This study was examined for sweeping arm system suitable for domestic small fishing vessels. The selected small vessel was as the model of Coastal gill-net and compound fishing vessel with classes of 2.5~3.5tons, length 8~9m, breath 2.5~2.8m, horsepower 200~250 HP and FRP materials. The developed equipment was designed that can be easily mounted on the model ship and portable structure. For increasing the field practicality, the weight of each part was composed less than 10kg for easy assembly and disassembly.

A Study on the Development of Inflatable Life Raft Performance Criteria for Small Fishing Vessels (소형어선용 팽창식 구명뗏목 성능기준 개발에 관한 연구)

  • Kim, Kyung-Woo;Jang, Cheol-Min;Park, Jong-O;Lee, Hee-Joon
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.20 no.5
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    • pp.558-563
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    • 2014
  • In order to reduce the risk of deaths from hypothermia at sea, this paper suggests the performance criteria of life rafts for small fishing vessels less than 20 m in length. In our country, the life rafts are not used and have no performance criteria. This research compared the performance criteria of the domestic, foreign, international standards, and the performance comparison between foreign life rafts and the user-friendly valise prototype(2 & 4 persons) which is developed by this study. As a result, it is considered to be appropriate that ISO 9650-1 can be applied to the life rafts for offshore fishing vessels while a milder criteria can be applied to the life rafts for coastal fishing vessels.

Motion Response Estimation of Fishing Boats Using Deep Neural Networks (심층신경망을 이용한 어선의 운동응답 추정)

  • TaeWon Park;Dong-Woo Park;JangHoon Seo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.29 no.7
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    • pp.958-963
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    • 2023
  • Lately, there has been increasing research on the prediction of motion performance using artificial intelligence for the safe design and operation of ships. However, compared to conventional ships, research on small fishing boats is insufficient. In this paper, we propose a model that estimates the motion response essential for calculating the motion performance of small fishing boats using a deep neural network. Hydrodynamic analysis was conducted on 15 small fishing boats, and a database was established. Environmental conditions and main particulars were applied as input data, and the response amplitude operators were utilized as the output data. The motion response predicted by the trained deep neural network model showed similar trends to the hydrodynamic analysis results. The results showed that the high-frequency motion responses were predicted well with a low error. Based on this study, we plan to extend existing research by incorporating the hull shape characteristics of fishing boats into a deep neural network model.

SELECT 모델에 의한 전어 선자망의 망목선택성 해석

  • 박창두;정의철;신종근;안희춘
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2002.10a
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    • pp.39-40
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    • 2002
  • 전어는 한국 연안에 널리 분포하고 있으며, 주로 남해안과 동해안에서 어획이 이루어지고 있다. 전어의 어획 방법은 1978년까지는 주로 자망에 의하여 어획되었으나, 최근에는 소형 선망에 의한 어획량이 증가하고 있으며, 이것은 소수의 소형 선망에 전어가 대량으로 어획되는 영향에 기인한다. 그러나, 자망은 다른 어구에 비하여 어구의 비용이 적게 들고 소형 어선으로도 조업이 가능하므로 여전히 많은 수의 자망 어선이 전어가 연안으로 회유하여 오는 봄과 가을에는 선자망을 사용하여 조업을 행하고 있다. (중략)

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