围网作业中,一般利用船上的绞机绞收括纲。绞收括纲过程,网底在逐步收拢的同时将逐渐地被往上提升。显然,括纲绞拉力实际上包括收拢网底的收括力和提升网底的拉力两部分。随着围网向大型化发展,围网尺度、重量加大,风、潮流的影响也随之增大。这样不但需要加大收括力,同时要求有更大的提升力。这些都增加了收括围网操作 Purse seine operations, the general use of the ship twisted winch Gang. Winding the process of closing outline, the bottom of the network gradually Shoulong while gradually being raised up. Obviously, the stranding force actually includes two parts: the closing force of the closing net and the pulling force of the net. With the seine to the large-scale development, the fence size, weight, wind, the impact of the trend also increases. This will not only require greater coercivity, but also require greater lift. These have increased the income fence operation