-156- 



50 



CO 



z 

 o 



40 - 



CO 



o 



< 



^ 30 

 o 



X 



o 

 < 



20 - 



10 - 



12 3 4 5 



THOUSANDS OF DAYS OF EFFORT, CLASS-6 VESSELS 



Figure 6. Relationship between catch and effort for yellowfin tuna 

 in the area outside the CYRA, 1969 to 1979. 



