• Title/Summary/Keyword: fishery technology

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Risk assessment for fisher's safety in coastal composite fishing vessels (연안복합 어선원의 안전 위험도 평가)

  • LEE, Yoo-Won
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.55 no.2
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    • pp.145-151
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    • 2019
  • The coastal composite fishery has the highest rate of around 30.0% in registered fishing vessels of Korea for the last three years. The risk analysis for the fisher's safety of coastal composite fishing vessels was conducted to serve as a basic data for improving the healthy and safe working environment of fisher using fisher's occupational accidents of the national federation of fisheries cooperatives (NFFC) from 2016 to 2018 (n = 1,105). As a result, the occupational accident occurrence rate of coastal composite fishery was 3.76% in all industries, 7.8 times the rate of that. In addition, death and missing rate was found to have a serious level management to 10.10‱. Among the accidents, 76.0% occurred at sea. The slipping, others and contact with machinery or fishing gear occurred more frequently in order in the frequency of accident occurrence pattern. In the risk assessment using frequency and severity, slipping, contact with machinery and others showed high risk during fishing. The results are expected to contribute to identification and assessment of safety hazard occurred in coastal composite fishing vessels.

A study on the performance test of canopy cloth on the fishery sea anchor (어업용 씨앵커 본체 천의 성능에 관한 연구)

  • Kyung-Jin RYU;Namgu KIM;Yoo-Won LEE
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.59 no.2
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    • pp.110-116
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    • 2023
  • In this study, samples of sea anchor canopy cloth mainly used in Korean jigging fishing vessels were collected and tested for performance evaluation. The canopy cloth of sea anchor is a basic element of form composition that is known to have the greatest influence on anchor performance. In order to evaluate the performance of sea anchor canopy cloth, five types of samples were tested for new metric count, tensile strength, water vapour transmission rate and drying speed according to the national standard (KS), and some correlations were identified. As a result of the test, the new metric count of cloths was 335.5-443.4 denier in warp and 217-447.6 denier in weft, and the minimum tensile strength was 860 N in warp direction and 430 N in weft direction. The apparent number and tensile strength of cloth were proportional, the water vapour transmission rate of the sample was 206.8 g/m2h, and the drying speed was 90-100 min. This study partially confirmed the performance evaluation based on speculation by the standard test method, and further research is needed on the clear relationship between the research results and the performance of the sea anchor.

Studies on Elder Berry Utilization - Part 1. Experiments on the Utilization of Elder Berry Fruit as Oil Resources - (Elder Berry이용(利用)에 관한 연구(硏究) -제1보(第一報) Elder Berry 열매의 유지자원(油脂資源)으로서의 이용성(利用性)에 관하여 -)

  • Shin, Eung-Tae;Park, Kwang-Hoon;Min, Byong-Yong;Suh, Kee-Bong
    • Korean Journal of Food Science and Technology
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    • v.10 no.4
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    • pp.404-408
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    • 1978
  • This experiment was carried out to study the characteristics and composition of the oil extracted from elder berry seeds. The results obtained were summarized as follows. 1. The elder berry fruits are composed of $1.56%{\sim}2.50%$ crude lipid, $2.50{\sim}6.10%$ crude protein, $0.7{\sim}1.3%$ crude ash, 0.73% pectin and the fresh whole fruits bore $6{\sim}7%$ of its seeds on weight basis. 2. The hot pressed oil had similar flavor and taste to sesame oil, and cold, pressed one, to olive oil. Its iodine value ranged $95{\sim}110$, and its oil extraction rate from seed $26.18{\sim}26.55%$. 3. The elder berry seed oil contained a high level of essential fatty acids, and the oil seed cakes, $12.65{\sim}18.65%$ of crude protein. These may be utilized as concentrated fodder for livestock.

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Study for fishery management measure on gape net with wings with catch composition in the water of Jin-do (진도해역 낭장망의 어획물 실태에 따른 어업관리 방안)

  • Shin, Jong-Keun;Choi, Mun-Sung;Seo, Young-Il;Cha, Hyung-Kee;Lee, Sun-Kil;Kim, Hee-Yong;Oh, Teag-Yun
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.49 no.4
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    • pp.404-418
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    • 2013
  • In this study, we conducted field surveys to investigate and analyze species and length composition of catch from gape net with wings being set in two areas - Masari, Supomri - located in southern part of Jin-do for understanding fishing characteristics of gape net with wings fishery from March to September of 2011. And with those results, we attempted to propose fishery management strategy to harvest fisheries resources continuously. Catch obtained from field surveys comprised total 78 species, which accounted for 53 species of fish, 20 species of crustacean, 4 species of cephalopod and one of polychaete. As to species composition in weight, it showed that there was 88.5% for pisces, 9.0% for cephalopoda and 2.5% for crustacea. As to catch specifics by area, there was 36 species (596,891 individual, 456,551g) of pisces, 17 species (35,815 individual, 12,909g) of crustacea and 3 species (2,876 individual, 3,004g) of cephalopoda in Masari area. In Supumri area, there was 41 species (396,898 individual, 281,457g) of pisces, 15 species (16,113 individual, 7,772g) of crustacea and 4 species (6,792 individual, 72,329g) of cephalopoda and one polychaeta (36 individual, 11g). Catch of anchovy by month recorded on high level on June, July, September in both areas. When considering size composition by month, it was found that new populations recruit to these fishing grounds on June and September. Most of bycatch species including hairtail (Trichiurus lepturus), dotted gizzard shad (Konosirus punctatus), conger eel (Leptocephalous), Pacific sandlance (Ammodytes personatus), horse mackerel (Trachurus japonicus) were juvenile, and grass puffer (Takifugu niphobles), Kammal thryssa (Thryssa kammalensis), Japanese sardinella (Sardinella zunasi) were also small in size. As a result, it is considered that gape net with wings fishery which is likely to catch juvenile needs to be set fishing prohibit period for conserving above stocks during the period excluding main fishing periods of anchovy or fisheries management such as expanding mesh size for preventing juvenile catch.

Design and performance estimation of fish-luring system using the water cooling typed LED lamp (채낚기 어선용 수랭식 LED 집어시스템의 설계 및 성능평가)

  • Bae, Bong-Seong;An, Heui-Chun;Kwon, Ki-Jin;Park, Seong-Wook;Park, Chang-Doo;Lee, Kyoung-Hoon
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.47 no.2
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    • pp.79-87
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    • 2011
  • A fishing lamp is fishing gear to gather fish in the night. But the cost of oil which is used to a light fishing lamp, goes significantly up to almost one hundred million won for 50 tonnage vessels and forty million won in case of vessels less than 10 tonnages. This cost has almost taken 30.40% of total fishing costs. As oil price increases, the business condition of the fishery gets worse and worse. Therefore, it is very urgent to develop an economical fishing lamp, to solve the problem of fishery's business difficulty. This research aims at developing a fishing lamp for squid jigging fishery and hairtail angling fishery using the LED, which has excellent efficiency and durability. One fishing lamp has about 160Watt capacity and five fishing lamps are installed one aluminium panel in which sea water flows to emit generated heat from LED to outside. Developed fishing lamp lights to an effective direction of jigging and angling operation. This fishing lamp can be controlled to light the direction of fish shoal because the aluminium panel can be controlled to up and down direction. The wave length of fishing lamp has white and blue color. White color light is to gather fish shoal of horizontal direction and blue color light is to gather fish shoal of vertical direction. After development of this fishing lamp, 60.110 units are established on the boat, and operated fishing. Consequently, in the case of squid jigging, spent energy was reduced to 39%, in the case of hairtail angling, 68% of spent energy was reduced. And the catch was more than another boat.

A study on the development of multi-purpose fisheries training ship and result of seakeeping model test (다목적 어업실습선 개발과 내항성능 시험 결과)

  • RYU, Kyung-Jin;PARK, Tae-Sun;KIM, Chang-Woo;PARK, Tae-Geun
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.55 no.1
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    • pp.74-81
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    • 2019
  • According to the recent presentation by the Korean Maritime Safety Tribunal, about 70% of marine accident occurs from fishing vessel, and 90% of cause of entire marine accidents attributes to human error. As fishing vessels require basic operations, fishing operations, other additional operations and techniques such as fish handling, cultivating excellent marine officer to prevent marine accident and develop industry is very important. A fisheries training ship is still very difficult to satisfy the demand for diversity of fishery training and sense of realism of the industry. As the result of employment expectation by category of business survey targeting 266 marine industry high school graduates who hope to board fishing vessels for the last four years, tuna purse seine was the highest with 132 cadets (49.6%), followed by offshore large purse seine (65 cadets, 22.4%), and tuna long line (35 cadets, 13.2%). The Korea Institute of Maritime and Fisheries Technology (KIMFT) has replaced old jigging and fish pot fishery training ships and proceeded developing and building multi-purpose fisheries training ships considering the demand of industry and the promotion of employment; however, the basic fishing method was set for a tuna purse seine. As a result of seakeeping model test, it can conduct the satisfiable operation at sea state 5, and survive at sea state 8.

Investigation of Demand Technology and Construction of Technology Roadmap for Short and Middle-term Research and Development with Focus on the Consensus Link Between Fisheries Specialists and Managers in Marine Production Field (해양생산분야의 요구기술 수요조사 및 전문가의 의견을 반영한 단·중기 기술 로드맵 작성 연구)

  • LEE, Dae-Jae
    • Journal of Fisheries and Marine Sciences Education
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    • v.17 no.2
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    • pp.193-208
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    • 2005
  • The object of this study is to provide a framework of increasing the effectiveness of the R&D planning of experts in fisheries and the education of students with the theoretical background and analytical skills through the adoption of technology roadmapping process in the marine production industry. The study was conducted by fact-finding surveys and the response content for surveys obtained from each expert advisor in the field of fisheries and maritime affairs such as fishery industries, some government organizations and research institutes including the Ministry of Maritime Affairs and Fisheries (MOMAF), National Fisheries Research and Development Institute (NFRDI) and fisheries-related universities was analyzed. The major implementation tasks to effectively achieve the basic goals of technology roadmap for short and middle-term research and development in the fisheries production field are as follows: 1. Research in order to achieve the realization of community-based resource management fisheries or fishermen-oriented co-management fisheries with paradigm shift in fisheries management. 2. Research in order to derive the construction of cost reducing and manpower saving systems in fishery-related science, technology and engineering. 3. Research in order to create the high value-added fisheries products with a focus on the upgrading of processing, freezing and refrigerating facilities, the reduction of logistics costs and the minimization of distribution steps. 4. Research in order to achieve the realization and development of environmental-friendly fisheries and internationally competitive fisheries through restructuring the entire fishing industries, in particular, small-scale fisheries. 5. Research in order to achieve the effective utilization of fisheries resources with a new creation of clean and living marine environment by fisherman under the balanced management and protection of marine living resources and fishing grounds.

Promoting Fishing Industries as a New Growth Engine in Fishery Field (수산분야 신성장동력으로서 낚시 산업 육성)

  • Hong, Keun-Hyung
    • Journal of Korea Ship Safrty Technology Authority
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    • s.33
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    • pp.74-80
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    • 2012
  • 2012년 9월 10일 낚시 행위 및 관련 산업에 대한 통합법인 "낚시 관리 및 육성법"이 시행됨에 따라 낚시의 관리 및 육성을 위한 법적 제도적 틀이 마련되었으며, 이에 맞춰 농림수산식품부에서는 2012년 3월 "낚시산업 활성화 대책"을 발표하여 구체적 시행 계획을 마련하였다.

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TWO LATEST FISHERY-INDEPENDENT SURVEY TECHNOLOGIES

  • Lo, Nancy C.H
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.10a
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    • pp.26-27
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    • 2001
  • Two sea survey instruments were introduced: continuous underway fish egg sampler (CUFES) and an airborne light detecting and ranging (LIDAR) for survey of epiplegic fish. We have used CUFES in ichthyoplankton surveys primarily for Pacific sardine (Sardinop sagax) eggs off California since 1996 and it is also being used in many parts of world for sardine and anchovy egg surveys. (omitted)

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