12.1 Drive-in-net for Flying Fish and Half-beak
The rectangular main net is divided into three parts. The center part is made of 210d/2 nylon twine with a mesh size of 18 mm. The outer sides or wings are nylon 210 d/9 netting with 25 mm. mesh size. The net is 270 meters long and 32.4 meters deep. The gear has rings connected to the leadline by bridles.
Another type of drive-in gill net for flying fish has the main webbing made of nylon 210d/4 with 20 mm. mesh size. The length and depth of the net is 108 and 21.6 meters, respectively. The selvage is nylon 210d/6 with 30-40 mm. mesh size. The construction in the lower part is ladder type with both wings shallower than the middle portion. Rings are tied to the leadline using 50 cm. PE f 3 mm. bridles. There are 21 lead rings measuring 5.3 cm.x1.6 cm.0 distributed along the leadline at 12.6 meters interval. The scare ropes has a length of 1,000 meter of PE f 6 mm. at both sides during fishing operation.
Upon seeing a school of fish, the net is first set and followed by the scarelines which drives the school towards the net. Two boats are used in the operation. When the two ends of the net meet, one boat pulls the purse line while the other boat tows the net boat to prevent it from entangling with the net. Both ends of the net are hauled simultaneously until the catch is brought on deck for storage. |
