A fishing net, similar to a small trawl net, with a conical net bag with two relatively long wings. Two long heavy ropes, one attached to each wing, are used to encircle a large area of the seabed to herd the fish into the net and then to haul...

A type of bottom trawl in which the horizontal opening of the net is provided by a heavy beam mounted at each end on guides or skids that travel along the seabed. On sandy or muddy bottoms, a series of ‘tickler’ chains are strung between the...

Similar to a beam trawl, a dredge consists of a rugged triangular steel frame and tooth-bearing bar, behind which a mat of linked steel rings is secured. A heavy netting cover joins the sides and back of this mat to form a bag in which the catch...

A type of bottom trawl that has two rectangular 'doors' or 'otterboards' to keep the mouth of the funnel-shaped net open horizontally while the net is being towed. A vertical opening is maintained by weights on the bottom and floats on the top.