太仓浮桥拖网网具性能初探

PRELIMINARY STUDY ON PERFORMANCE OF TRAWL MADE IN FUQIAO OF TAICANG

本文报道了使用斯开玛捕捞作业监控仪对太仓浮桥拖网海上作业实测结果，在拖速３３～３９节条件下，该网浮拖作业网口高度为１１７～１３８米，底拖作业网口高度１１８米。分析讨论了在投放不同曳纲长度时，椭圆形网口形状的变化趋势，其长、短轴之比浮拖作业为０５１，底拖作业为０４６。把该网的网具性能和作业参数和５５０目×３００毫米拖网做了比较，结果认为该网对捕捞中上层鱼类有良好性能。

The realtime fishing measurement of the trawl made in Fuqiao of Taicang with Scanmar Catch Control System S600 at the sea was reported in this paper. Under trawling speed of 3.3～3.9Kt, the height of net opening for surface trawling is 11.7～13.8m for bottom trawling. The paper analysed the change tendency of ellipse shape of net mouth. The ratio of major/minor axis of ellipse is 0.51 for surface trawling and 0.46 for bottom trawling. This trawl performance is suitable for catching pelagic species in comparison with performance of trawl with 550mesh×300mm.