Evolution of suitable trawl nets for medium size trawlers - 1: Comparative fishing efficiency between 32 m bulged belly, long wing and four panel trawls

Comparative studies of the efficiency of 32 m bulged belly, long wing and four panel trawls have shown that the bulged belly trawl to be superior to the other nets in catching bottom fishes and column fishes. 40% of the bottom fishes and 48% of the column fishes were caught by the bulged belly trawl. However, for prawn catch, the long wing trawl appears to be better as it landed 52% of the total prawn catch of the three nets. Bulged belly trawl was found to be next only to long wing trawl in this respect.

Studies on long wing trawl for shrimps off Kakinada (A.P.) coast - (i) Results of comparative fishing experiments with the conventional two seam trawl

Comparative fishing operations with the conventional two seams net and a 29.26 m. long wing shrimp trawl of four seam type were undertaken. The result showed that the four seams net gave nearly twice prawn catch than that of the conventional type. It was also found that the four seams net can be developed into a combination trawl for the effective exploitation of both prawns and fish along the coasts off Kakinada.