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

The Korean Society of Fisheries and Ocean Technology (한국수산해양기술학회)
권호 표지
DOI QR코드

DOI QR Code

Studies on the improvement of the productivity of purse seine fishery-II - The sinking movements with the flow velocity on the model purse seine of the subjective power block and triplex

선망어업의 생산성 향상에 관한 연구-II - 파워불록과 트리플랙스용 선망 모형의 유속에 따른 침강거동 -

  • Kim, Suk-Jong (Faculty of Ocean Science, Cheju National University)
  • 김석종 (제주대학교 해양과학부)
  • Published : 2007.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

It is the basic studies for productivity improvement and laborsaving of purse seine fishery. Because the seine shape is apt to be transformed in seine shooting process due to the effect of tide, this study is intended to establish 4 steps, whose flow velocity are 0, 2, 4 and 6cm/sec, in flume tank and perform the experiment to review the character. We used two model seines designed on the scale of 1 to 180 based on the power block seine, which is the mackerel purse seine generally used in the near sea of Jeju Island and triplex seine, which is the mackerel purse seine of one boat system fishing expected in the future, for the experiment, analyzed of the sinking movements on the two seines and its results are as follows. In the setting over the flow velocity 6cm/sec, experiment was impossible because of flying and transformation of seine were severe. The sinking movements of P seine and T seine generally showed linear phenomenon and the sinking speed showed gentle curve shape. Sinking tendency was distinguished by existence of flow velocity. When there is flow velocity, it showed the phenomenon that it sinking by similar type. Although sinking depth and sinking speed did not show distinguished classification, P seine shows bigger than T seine. When there was in flow velocity, the elapsed time(Et) and sinking depth (PDp, TDp) of P seine and T seine can be shown such experimental equations as PDp=(0.21V+4.96)Et-(0.62V-0.10) and TDp=(0.19V+4.95)Et-(0.72V+0.34). When there was in flow velocity, the elapsed time and siking speed (PSp, TSp) of P seine and T seine can be shown such experimental equations as $PSp=-0.11Et^2+1.42Et+1.75\;and\;TSp=-0.11Et^2+1.41Et+1.37$.

Keywords

References

  1. Iitaka, Y., 1954. Model experiments on the sardine purse seine operating in Hyuganada - 1, Bull. Jap. Soc. Sci. Fish., 20(7), 571 - 575 https://doi.org/10.2331/suisan.20.571
  2. Iitaka, Y., 1955. Model experiments on the sardine purse seine operating in Hyuganada - 2, Bull. Jap. Soc. Sci. Fish., 21(1), 6 - 11 https://doi.org/10.2331/suisan.21.6
  3. Iitaka, Y., 1955. Model experiments on the sardine purse seine operating in Hyuganada - 3, Bull. Jap. Soc. Sci. Fish., 21(7), 459 - 462 https://doi.org/10.2331/suisan.21.459
  4. Iitaka, Y., 1956. Model experiments on the sardine purse seine operating in Hyuganada - 4, Bull. Jap. Soc. Sci. Fish., 22(7), 389 - 392 https://doi.org/10.2331/suisan.22.389
  5. Iitaka, Y., 1958. Model experiments on the sardine purse seine operating in Hyganada - 5, Bull. Jap. Soc. Sci. Fish., 23(9), 511 - 513 https://doi.org/10.2331/suisan.23.511
  6. Iitaka, Y., 1958. Model experiments on the sardine purse seine operating in Hyuganada - 6, Bull. Jap. Soc. Sci. Fish., 24(6&7), 407 - 410 https://doi.org/10.2331/suisan.24.407
  7. Kawakami, T., 1964. The theory of desiging and testing fishing nets in model, Modern fishing gear of the world - II. Fishing News Books. London, 471-481
  8. Kim, S.J., T. Imai and H. Kikukawa, 1992. An analysis on the sinking characteristics of weighted netting. Nippon suisan gakkaishi, 58(6),1037 - 1042 https://doi.org/10.2331/suisan.58.1037
  9. Kim, S.J., T. Imai and J.S. Park, 1995. Characteristics on the motion of purse seine - 1, The sinking behaviour of model purse seine by different netting material. Bull. Korean Soc. Fish. Tech., 31(4), 362 - 371
  10. Kim, S.J. and J.S. Park, 1995. Characteristics on the motion of purse seine - 2, An analysis on the sinking characteristics of model purse seine by different netting material. Bull. Korean Soc. Fish. Tech., 31(4), 372 - 378
  11. Kim, S.J. and J.S. Park, 1998. An analysis of sinking resistance for purse seine, In the case of the model seine with different d/l. Bull. Korean Soc. Fish. Tech., 34(3), 274 - 282
  12. Kim, S.J., 1999. Studies on the improvement of the fishing efficiency of purse seine in the sea area of cheju island, The changes of seine volume and tension in the purseline during pursing. Bull. Korean Soc. Fish. Tech., 35(2), 93 - 101
  13. Kim, S.J., C.M. Choi and Y.J. Chung, 2003. Studies on the improvement of the productivity of the purse seine fishery, The characteristics on the motion of purse seine in the experimental operation of one boat system. Bull. Korean Soc. Fish. Tech., 39(2), 99-111 https://doi.org/10.3796/KSFT.2003.39.2.099
  14. Kim, S.J., 2004. An analysis on the sinking resistance for purse seine, 2. In the case of the model seine with different netting material and sinkers. Bull. Korean Soc. Fish. Tech., 40(1), 29 - 36 https://doi.org/10.3796/KSFT.2004.40.1.029
  15. Konagaya, T., 1970. Studies on the design of the purse seine - II , Effect of the mesh and the specific gravity of webbing. Bull. Jap. Soc. Sci. Fish., 37(1), 8 - 12
  16. Konagaya, T., 1971. Studies on the design of the purse seine. Jour. Fac. Fish. Pre. Univ. Mie, 8(3), 209-296
  17. Nomura, M., K. Mori, Tawara Y. and K. Kumura, 1987. Study on behaviour of purse seine - 4, Large scale model experiment of horse mackerel purse seine. Bull. Tokai Reg. Fish. Res. Lab., 49. 63 - 80
  18. Park, J.S., 1986. A study on the fishing ability of the mackerel purse seine operating and the fishing condition in the sea area of Jeju Island. Bull. Korean Fish. Tech. Soc., 22(3), 42 - 46
  19. Park, J.S., 1986. Studies on the mackerel purse seine operating in the sea area of Jeju Island - 1, Model experiment on the changes of net shape in stag nant water. Bull. Korean Fish. Tech. Soc., 22(2), 7 - 15
  20. Park, J.S., T. Aoyama and M. Suzuki, 1986. Studies on the mackerel purse seine operating in the sea area of Jeju Island - 2, Model experiment on the deformation of net in two layer current. Bull. Korean Fish. Tech. Soc., 22 (4), 32 - 40
  21. Park, J.S., 1989. Studies on the mackerel purse seine operating in the sea area of Jeju Island - 3, Fishing ability of purse seiner by classes of boat size. Bull. Korean Fish. Tech. Soc., 25(2), 61 - 69
  22. Park, J.S., 1991. Studies on the mackerel purse seine operating in the sea area of Jeju Island - 4, The characteristics of catch and ability in purse seine. Bull. Korean Fish. Tech. Soc., 27(4), 247 - 254
  23. Park, J.S., S.J. Kim and S.K. Kim, 1997. A study on the behaviour of fish schools in the process of catch of the purse seine fishing method. Bull. Korean Soc. Fish. Tech., 33(3), 173 - 182
  24. Park, J.S., H. Kikukawa and S.J. Kim, 1999. A Study on the tension of a purseline in the process of catch of the purse seine fishing method - I , Model experiment on the tension of a purseline by net shapes. Bull. Korean Fish. Tech. Soc., 35(1), 1-10

Cited by

  1. Studies on the improvement of the productivity of purse seine fishery-II - The sinking movements with the flow velocity on the model purse seine of the subjective power block and triplex vol.43, pp.1, 2007, https://doi.org/10.3796/KSFT.2007.43.1.001
  2. Studies on the improvement of the productivity of purse seine fishery-III - The characteristics on the motion with the flow velocity of model purse seine of the subjective power block and triplex during pursing - vol.43, pp.1, 2007, https://doi.org/10.3796/KSFT.2007.43.1.012
  3. Ascorbic acid treatment to improve the light fastness or as reducing agent on silk fabric dyed with pulverised natural dyes vol.20, pp.2, 2016, https://doi.org/10.1108/RJTA-11-2014-0036
  4. A Study on the Sinking Performance Characteristics of Various Nets Used in Purse Seine Gear vol.30, pp.5, 2018, https://doi.org/10.13000/JFMSE.2018.10.30.5.1714