The publication of these charts has been supported by the Fisheries 

 Agency in various ways. The editor is also deeply sensible of the kindness 

 of the Federation of Japanese Tuna Fishermen's Associations in the efforts 

 they made toward the publication of this volume. 



Section 



Albacore 

 Yellowfin 

 Striped marlin 

 Broadbill swordfish 

 Bigeye tuna 

 Black tuna 

 Black marlin 

 Overall responsibility 



January 5, 1953 

 To the reader: 



Person in Charge 



Akira Suda 



Yoichi Yabuta 



Shoji Ueyanagi 



Shoji Kikawa 



Tadao Kamimura 



Hajime YamaJiaka 



Yoichi Yabuta 



Hiroshi Nakamura and 

 Hajime YamanaJta 



In some cases there are inconsistencies in the names used for 

 fishing grounds in this work. In the present stage of our study, it is not 

 clear how the sea areas should be divided up, and however we try dividing 

 them it is impossible to arrive at a precise and proper division in accord- 

 ance with the characteristics of the fishing grounds. For these reasons, 

 each author has used the division which best suited his exposition. It is 

 anticipated that this may be a source of some confusion to the readers. 

 We expect to systematize these names in the future. 



