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http://dx.doi.org/10.3796/KSFT.2003.39.4.326

Development of Fishing Gear and Operating System in Purse Seine Fishery for Gizzard-shad(II) - Model Experiments for Improvement of the Net -  

장덕종 (여수대학교)
김진건 (부경대학교)
Publication Information
Journal of the Korean Society of Fisheries and Ocean Technology / v.39, no.4, 2003 , pp. 326-336 More about this Journal
Abstract
In order to modify the construction of gizzard shad coastal purse seine net with possible to the laborsaving of fishing operation in the coastal small fishing vessels, the model experiments were carried out on the model nets for several conventional nets using in the field and the experimental nets was manufactured as 1/100 and 1/60 of the full scale net. The results obtained are summarized as follows；1. In the case of the conventional net and reduction rate 75% in conventional net with purse line the fishing efficiency decreased, the lead line was upward for the surface and the pursing depth of pursing line was very shallow to 2∼3m. 2. In the case of the net having maximum depth in center part designed in this study, the length of float and lead line was 60% of conventional net, the depth of net was fixed 20m to selvage line of the both of the end and extend gradually with 50m, 40m, 30m to the center. Among the these net, depth of pursing line was 20∼23m for 50m and 7∼15m for 40m, 30m the depth of net. These results were suitable for interception of fish school in fishing ground, but several problems will be caused by the depth and current of fishing ground.
Keywords
gizzard shad coastal purse seine; conventional net; experimental net; pursing depth;
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