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http://dx.doi.org/10.3796/KSFT.2003.39.2.099

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 -  

김석종 (제주대학교)
최찬문 (제주대학교)
정용진 (제주대학교)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.39, no.2, 2003 , pp. 99-111 More about this Journal
Abstract
The fundamental studies on the productivity improvement of the purse seine fishery are presented in this paper. The experiment on net shooting and hauling was carried out in the near sea of Jeju Island (33$^{\circ}$37.8' N, 126$^{\circ}$31.1' E) by using the Cheju national university training ship (A-Ra, 990tons) which was constructed for the one boat system operation of purse seine. The corkline and leadline of the purse seine used for the experiment were 829.1m and 995.7m in length, respectively. Micro data recorder system, net sonde, and tensiometer were used to measure the depth of leadline and the tension of purse seine. Based on the measurement data, the motion and tension of purse seine at the time of shooting, hauling, and pursing were characterized. The experimental results are summarized as follows ; 1. The shooting and hauling of net were found to be possible in the one boat system experimental operation. 2. At the time of purse seine shooting, the relationship between the depth (Dp) of leadline and elapsed time (Et) was found to be Dp=7.58Et-6.48. 3. At the time of pursing, the relationship between the depth (Dp) of leadline and elapsed time (Et) was found to be Dp=-0.8Et$^2$＋7.42Et＋92.04. 4. At the time of pursing, the tension (metric tons) of purse seine attained its maximum value (14.7tons) when the elapsed time is 8 minutes. The relationship with the elapsed time was found to be T=-0.13Et$^2$＋3.23Et-5.72.
Keywords
Motion and tension characteristics analysis; One boat system experimental operation; Purse seine;
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