The present invention relates to nets, preferably for fishing, webbed onto a discharging device, a discharging system and a method for manufacture of such nets and discharging systems. The net, the system and the method make possible to determine the opening of the net's meshes by way of a mounting-line and a netting-device coupled with the mounting-line, which permits the mounting of longer nets onto shorter net ropes. The mounting line is attached to the mesh-cell or mounting mesh-cell of the net to maintain a fixed opening size of the meshes, during discharge and operation of the net.