At this season in 1935 and 1936 large schools of tarekuehi were seen at 

 sea, but this year none were seen, it is said 



At Saipan the skipjack are fattest in June, July, and August, while 

 in December, January, and February when there is no food offshore the 

 fish are at their leanest,, 



3 Particulars of the Investigation 



Research vessels Nanko Fishing Company's No. 1 Ebisu Maru (10»6 tons, 



30 HP) and Sakigake Maru (20 tons, 30 HP) 

 Area investigated - waters under the jurisdiction of the Saipan District 

 Time of the investigation - October 28 to December 7, 1937 

 Personnel - Technician in charge 1 Assistant 1 



Crew of the Hakuo Maru 12 

 Gear used - 1 stick-held bait net 1 Hachida £l / ne * 



1 homuraito /~Hcme Light ?_/ 

 (600 watt) 

 1 Hayashi type electric fishing light 



(160 watt) 



Outline of the Investigation 



The plan was to make oceancgraphical observations in the waters off 

 Saipan and also to attempt to attract bait fish with lights at nighty 

 to take the fish which might assemble by means of a stick-held dipnet 

 or a Hachida net, and to investigate their distribution, time of 

 appearance, and periods of abundance and scarcity „ 



The places to be investigated and the daily schedule of operations 

 xvere, after consultation with the skipjack fishermen's association, 

 settled as follows „ One fisherman from each of the skipjack boats was 

 carried aboard the vessels making the investigation 



Places Invests a and Number of Days Spent at Each 

 a wnen the sea was calm 



1 3 to 5 miles west of Gunkan £ Maniagasha_/ island 3 days 



Mo zone 3 days 



3 U miles east of Nafutan Point 3 days 



U 1 mile off Donnay 3 days 



5 Marpi bank 3 days 



6 Shija bank 3 days 



7 Magicienne Bay 3 days 



b in rough weather 



1 off the new harbor at Tinian 



1 coast at Kahi on Tinian 



1 Tinian Harbor near South Sea Development Company's plant 



