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The opening efficiency of the existent net of the anchovy boat seine

기선권현망 현용 어구의 전개 성능

  • AN, Young-Su (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • BACK, Young-Su (Green-Ship Research Division, Research Institute of Medium & Smail Shipbuilding) ;
  • JIN, Song-Han (Green-Ship Research Division, Research Institute of Medium & Smail Shipbuilding) ;
  • JANG, Choong-Sik (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • KANG, Myoung-Hee (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • CHA, Bong-Jin (Fisheries Resource and Environment Division, Namhae Sea Fisherise Research Institute, National Institute of Fisheries Science) ;
  • KIM, Bo-Yeon (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • CHA, Ju-Hyeng (Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • CHO, Youn-Hyoung (Institute of Marine Industry, College of Marine Science, Gyeongsang National University)
  • 안영수 (경상대학교 해양과학대학 해양산업연구소) ;
  • 백영수 (중소조선연구원) ;
  • 진송한 (중소조선연구원) ;
  • 장충식 (경상대학교 해양과학대학 해양산업연구소) ;
  • 강명희 (경상대학교 해양과학대학 해양산업연구소) ;
  • 차봉진 (국립수산과학원 남해수산연구소) ;
  • 김보연 (경상대학교 해양과학대학 해양산업연구소) ;
  • 차주형 (경상대학교 해양과학대학 해양산업연구소) ;
  • 조윤형 (경상대학교 해양과학대학 해양산업연구소)
  • Received : 2018.01.17
  • Accepted : 2018.02.19
  • Published : 2018.02.28

Abstract

This study was conducted in order to improve fishing gear for existent net of the anchovy boat seine. Field experiments were performed to observe geometry of nets by catcher boats. When the distances between the two ships were 100, 300, and 500 m, and the speeds of towing nets were 0.6, 0.9, and 1.2 k't, respectively. The vertical opening and actual opening of each part of the existent net was as follows: the middle part of the wing net, 12.9-26.6 m, 19-39%; the entrance of the inside wing net, 23.3-35.3 m, 40-60%; the square and bosom, 18.4-24.2 m, 37-49%; the entrance of the bag net, 19.0-23.3 m, 79-96%; the flapper, 13.2-15.3 m, 142-161%; and the end of the bag net, 13.2-15.7 m, 51-61%. The actual net opening of each part of the existent nets used in this study was lower than that of the design net height, due to the low net height of the wing net and the inside wing net, it limited a range of the net height of the square and bosom. The opening of the entrance of the bag net caused the net pocket shape and inflated some parts of the nets. The tension of towing nets was measured between 4.4 and 11.0 tons, and it is necessary to reduce the structure and improve the structure of the bag net.

Keywords

Anchovy boat seine;Opening efficiency;Catcher boats;Wing net;Towing speed

Acknowledgement

Supported by : 한국해양과학기술진흥원

References

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