| 摘要 |
<p>A tandem drag-net for fishing on a commercial scale, from stern-trawlers, on the high-seas or in coastal waters. The invention improves the catching efficiency of drag-nets, reduces the material-cost of producing them, and makes it possible to pick up again any fish escaping from the fine-mesh funnel of the drag-net and while retaining the same size of drag-net mouth and the same towing speed, to reduce the cost of netting and rope. A tail-less main drag-net, and a tail-net enveloping the rear part thereof, are arranged in tandem. The main drag-net is made of extremely thin material, and the tail-net is connected to the drag-net harness by means of ropes. There is no positive connection between the rear end of the main drag-net and the enveloping portion of the tailnet.</p> |
