网袖扭转及其排除的模拟试验

SIMULATED TEST OF FISH NET TURN ROUND AND ITS ELIMINATION

网袖扭转是单拖渔轮用网囊引纲船舷一侧起网时有发生的现象。本模拟试验,可清楚地观察到网袖扭转的角度、方向,从而采取安全、简便快捷的方法排除。操作:面向船尾,右舷收网的顺时针方向扭转一周,左舷收网的逆时针方向扭转一周,排除时连接着网囊引纲一侧的网袖和混含纲保持不动,解开连接另一网袖叉纲一端的混合纲,顺其向绕另一混合纲一周并接回原处,网袖扭转便排除。

We use ballrope to take in net by boardside of single boat trawler, usually net turn round happened. When we put away again, net can not spread, net far away from vessel and sink. Difficult to differentiate the direction. We are used to judge by pull net taut or eliminate it over net space. But in this way, net easy to break out, float lose away and fish can not into codend as halving becket is tighten, otherwise, net is too whiehgto carry. A ftertsimulated test, we are able to understand angle, direction and eliminate it by safe and simple method. Conclusion: Face to stern, right side take in net to turn round in clockwise of a circle, left side take innet to turn round in against clockwise of a circle. The net and combination which link the ballrope is keep static, untie another combination which link the side of another strop, along it's direction turn round other combination of a circle and join it back, and the net turn round is eliminated.