ATLANTIC 



PA C I F I C 



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JAPANESE TUNA FISHING GROUNDS (PREWAR) 



60' SO' 100' HO' 140° 160' ISO' 160' 140' 120' 100' SO' 60" 40' 70' 0' }0° 



Figure 4. 



(SO- 



JAPANESE TUNA FISHING GROUND EXPANSION 

 (EZUI954 US 1957) 



60' SO' 100' 120' 140' 160' ISO' 160' 140' 120' 100' SO' 60' 40' 20' 0' 20' 



Figure 5. 



20 



