鮟鱇網 漁具 漁法의 改良에 관한 硏究

Studies on the Improvement of Stow Net Fishing Gear and its Method

A stocked type anchor is used in the stow net. Since one side fluke of this anchor is projected into the upward in the sea bottom, the fishing gears including net and rope are snagged by this fluke, and sometimes a big accident happens. If we could get rid of this unnecessary fluke, it will be the best way in the stow net anchor. The attaching position and shape of stock can be changed in the ideal anchor with only one side fluke. Under the purpose of improving the most effective stock with only one fluke, the model anchor tests were carried out with the changes of size, shape and attaching position of stock, and examined the intrusive quality, stability and holding power which are considered to be the reliability of anchor. In case that the conventional stock is used, acceptable attaching position of stock judged from the initial and secondary holding is position B. In the position A. the right stand corresponding to the initial holding is difficult, on the occasion that the stock length is quite short. The secondary holding gets worse with decreasing of the stock lenth in the position C, but in case that the stock is sufficiently long the secondary holding is rather better than any other position. Therefore, we may admit the possibility to change the present attaching position of stock. The qualities of the transformed stocks are generally interior to the conventional type. But the application possibility can be seen in some model types. We think especially the bent shape round rod type, plate and V-angle types seem to be worthy of study in the future.