Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
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The opening efficiency of the miniaturized small-scale net for anchovy boat seine to reduce the fleet size

선단축소를 위한 기선권현망 축소형 소형어구의 전개성능

  • AN, Young-Su (Department of Marine Production System / 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 (Department of Marine Production System / Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • KANG, Myoung-hee (Department of Marine Production System / Institute of Marine Industry, College of Marine Science, Gyeongsang National University) ;
  • CHA, Bong-jin (Fisheries Resource and environment Division, South Sea Fisheries Research Institute, NIFS) ;
  • CHO, Youn-hyoung (Training Ship SAEBADA, Gyeongsang National University) ;
  • CHA, Ju-hyeng (Department of Marine Production System, College of Marine Science, Gyeongsang National University) ;
  • KIM, Bo-Yeon (Department of Marine Production System, College of Marine Science, Gyeongsang National University)
  • 안영수 (경상대학교 해양과학대학 해양산업연구소) ;
  • 백영수 (중소조선연구원) ;
  • 진송한 (중소조선연구원) ;
  • 장충식 (경상대학교 해양과학대학 해양산업연구소) ;
  • 강명희 (경상대학교 해양과학대학 해양산업연구소) ;
  • 차봉진 (남해수산연구소 자원환경과) ;
  • 조윤형 (경상대학교 실습선) ;
  • 차주형 (경상대학교 대학원 해양생산공학과) ;
  • 김보연 (경상대학교 대학원 해양생산공학과)
  • Received : 2019.01.17
  • Accepted : 2019.02.22
  • Published : 2019.02.28
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Abstract

This study was conducted in order to improve opening efficiency of the miniaturized small-scale net for anchovy boat seine gear to reduce the fleet size. Field experiment was performed to observe geometry of nets by catcher boats. When the distance between the two ships was 150, 300 and 450 m and the speed of towing nets was 0.6, 0.9, and 1.2 kt, the vertical opening and actual opening of each part of the miniaturized small-scale net was as follows: the front part of the wing net, 6.8-9.5 m, 45-63%; the middle part of the wing net, 16.1-30.7 m, 34-65%; the entrance of the inside wing net, 21.6-41.2 m, 44-84%; the square and bosom, 17.4-34.0 m, 38-75%; the entrance of the body net, 16.5-29.4 m, 36-64%; the entrance of the bag net, 14.5-21.9 m, 70-106%; the flapper, 6.7-7.7 m, 81-83%, and the end of the bag net, 8.6-10.9 m, 64-81%. The tension of towing nets was measured to be 2,734-6,812 kg approximately, which indicates that the fleet can tow nets with 350 hp, the standard engine horse power. The fishing operation time was shortened comparing to existent net with the large-scale buoy attachment operation. It was also possible to operate the ship without fish detecting boat.

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References

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