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1. The trawler on the trawler uses the winch on the deck to collect the net. The trawl net adopts high-toughness polyethylene wear-resistant wire and rope, which has good impact resistance and wear resistance. Trawling is a fishing method with good effect and wide application range. The trawling operation is flexible, adaptable and has high productivity. Trawling is a mobile filtering fishing gear that uses the movement of the ship to drag the fishing gear forward in the seabed or seawater, forcing the fishing gear to pass through the fish, shrimp, crabs and other fishing objects in the waters into the net bag to achieve the purpose of fishing.

2. When the fishing boat drags the net forward, the net plate generates expansion force under the action of the water flow, which can make the net open horizontally. During the operation, the fishing boat moves forward slowly and releases the net gear from the tail slide, connects the net plate to the trolley and removes it from the two net plate frames. Then the fishing boat moved forward quickly, and gradually released two trolleys. When the trolley is released for a predetermined length, the fishing boat trawls forward according to the predetermined towing direction and speed. The length of the trolley released is generally 3 to 5 times the depth of the water. The trawl speed is generally 3 to 5 knots per hour. The net starts every 3 hours or so. When the net is lifted, the fishing boat moves forward slowly to retract the skeins in turn. When the reel reaches the stencil, fix the stencil on the stencil frame to make it out of the sash, continue to reel the net gear, and slide it from the tail slide. Tow to the deck and take out the catch.