SORTEX is a 4-panel, rectangular-shaped tunnel connecting the trawl body to two codends, arranged vertically one upon the other. The tunnel is split o vertically by a net panel made of 400mm mesh size, mounted horizontally and with a bottom-up, backwards inclination of 4:5. The fore edge of the panel is connected on the top of a rigid frame, which shapes the main inlet of the lower codend.
Here you can find the cruise report of RV SOLEA 718.
Figure above: SORTEX drawing with 100 # in circumference, click here to see SORTEX drawing with 80#