DOI QR코드

DOI QR Code

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;BACK, Young-su;JIN, Song-han;JANG, Choong-Sik;KANG, Myoung-hee;CHA, Bong-jin;CHO, Youn-hyoung;CHA, Ju-hyeng;KIM, Bo-Yeon
안영수;백영수;진송한;장충식;강명희;차봉진;조윤형;차주형;김보연

  • Received : 2019.01.17
  • Accepted : 2019.02.22
  • Published : 2019.02.28

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.

Keywords

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

References

  1. An YS, Jang CS and Lee JH. 1997. The opening efficiency of anchovy boat seine. J Korean Soc Fish Technol 33(2), 118-131.
  2. An YS, Jang CS and Lee MK. 2005a. Underwater geometry of the anchovy boat seine in process of the fishing operation. J Korean Soc Fish Technol 41(2), 101-106. (DOI:10.3796/KSFT.2005.41.2.101) https://doi.org/10.3796/KSFT.2005.41.2.101
  3. An YS, Jang CS and Lee MK. 2005b. Development of the automatic hauling operation system by three boats for anchovy boat seine. J Korean Soc Fish Technol 41(2), 147-155. (DOI:10.3796/KSFT.2005.41.2.147) https://doi.org/10.3796/KSFT.2005.41.2.147
  4. Jang CS, An YS and Kim KH 2005. The opening efficiency of labor saving net for the anchovy boat seine. J Korean Soc Fish Technol 41(1), 9-16. (DOI:10.3796/KSFT.2005.41.1.009) https://doi.org/10.3796/KSFT.2005.41.1.009
  5. Jang CS, Kim YH and An YS. 2000. Improving of the fishing gear and development of the automatic operation system in the anchovy boat seine-I -Underwater geometry of the Model Net-. J Korean Soc Fish Technol 36(4), 299-308.
  6. Jang CS, Kim YH and An YS. 2001. Improving of the fishing gear and development of the automatic operation system in the anchovy boat seine-III -Underwater geometry of the prototype net-. J Korean Soc Fish Technol 37(4), 267-274.
  7. Lee BK, Yong YR, SU YT and Son BI. 1970. Study on the anchovy boat seine-I -On the hydrodynamic resistance and performance of the conventional gear-. Korean J Fish Aquat sci. 4(3), 79-91.
  8. Lee BK, SU YT and Han HS. 1978. Study on the anchovy boat seine-II -On the hydrodynamic resistance and performance of patti-net-. J Korean Soc Fish Technol 14(2), 63-68.
  9. Lee BK, SU YT, Yum MG and Han HS. 1979a. Study on the anchovy boat seine-III -Experimental operation of the improved gear, Model 79-. J Korean Soc Fish Technol 15(2), 83-94.
  10. Lee BK, Han HS, Yoon CA and Kim KH 1979b. Study on the anchovy boat seine-IV -An experiment to mechanize the hauling operation of bag net-. J Korean Soc Fish Technol 15(2), 95-100.
  11. Lee BK, SU YT and Lee JM. 1980a. Study on the anchovy boat seine-V -The physical properties of the improved netting twines to be used in the wing net-. J Korean Soc Fish Technol 16(1), 17-22.
  12. Lee BK, Sohn TJ and Roh GC. 1980b. Study on the anchovy boat seine-VI -The physical properties of the improved head rope and ground rope-. J Korean Soc Fish Technol 16(1), 23-26.

Acknowledgement

Supported by : 한국해양과학기술진흥원