process for the tuna fishery, device for its implementation and assembly of such devices

摘要

Method and device for fishing tunny and similar fish by means of a net surrounding a certain area, which is then closed up. A raft (201) comprises a flexible floating ring (202) enclosing a net (203) carrying lures and an opaque rubber sheet. A cylindrical net (211) is kept folded under the ring during a waiting phase during which the fish concentrates under the raft. Then, the net (211) is spread out and the lower opening thereof is closed by tightening the cable (221). Application for fishing any fish which tends to shelter under floating bodies, particularly tunny.