Journal of the Korean Society of Fisheries and Ocean Technology (수산해양기술연구)
- Volume 14 Issue 2
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- Pages.63-68
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- 1978
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- 2671-9940(pISSN)
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- 2671-9924(eISSN)
Study on the Anchovy Boat Seine - II - On The Hydrodynamic Resistance and Performance of Patti-net
기선권현망의 연구 II - 파치망의 유체저항과 그물꼴에 관하여 -
- Published : 1978.06.01
Abstract
A boat seine has been used as a major fishing gear for catching anchovy (Engraulis japonica) in the southern coastal waters of Korea since the 1920s. Since the 1950s some improvement from the original seine has been made; powered boats equipped with net hauler has been used instead of rowing boats with hand-driven capstan, and the seining method has been changed into the trawling method. But even now, there are many problems to be solved in the view point of decreasing man power without decreasing catching efficiency. For the purpose, patti-net has been introduced from Japan and experimented on the commercial base since 1972, and it was known that the patti-net could be operated with man power as half as needed in the coventional net, but catching efficiency was not so desirable. Therefore, the study on the characteristics of it were required. The authors carried out a model experiment with a Qne-twentieth scale model net towed by a powered boat on the sea. The obtained results run as follows: 1. Hydrodynamic resistance of the model net can be explained as
일본에서 멸치를 어획하는데 보편적으로 쓰이고 있는 파치망의 성능을 알기 위하여 1/20 크기의 모형어구를 제작하여 해상에서 예인하여 실험한 결과는 대략 다음과 같다.1. 어구의 전저항
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