Table 2. --Materials required for an American-style 

 purse seine 



Note: This table and figure 3 are both taken from theSuisan Kenkyu Kaiho No. 2, 

 Novennber 1949. 



(Translator's note: *1 sun =1.2 inches **1 kan = 8.27 pounds) 



The amount of the catch by the drift-net fishery is not known, but according to 

 Ministry of Agriculture and Forestry statistics for 1941 the catch by round haul nets was 

 1, 627, 263 pounds. This was about 1/6 as much as the catch by set-nets for the same year. 



B. Hook and Line Fisheries 



The mainstay of the tuna fisheries at present are the hook and line fisheries. If, for 

 example, we consult the statistics of the Ministry of Agriculture and Forestry for 1941, we find 

 that the total catch of the net fisheries was about 10, 751, 000 pounds, while the catch by the 

 hook and line fisheries, as shown in the following table, was about 6 times as great. 



Table 3.-- Tunacatch by the hook and line fisheries 

 (Ministry of Agriculture and Forestry 

 statistics, 1941) 



