■(3) ';.csults of Operatic.E of '/si-els n^ -icV) ^ cir viclo-jii^i-f 



'ro'^octuro 



Onerutions renorts s'ib'nltt:!c; i■^ acnordanc?, ^. i.t"i "^orn in. ^ (G) 0:^ the 

 Particu3.ars of tbs '.irantin''t cf buboiuius foi- tiie '"civslopraeat o£ ilbacoro 

 Fishin^T Grounds ar^ as t'ollovsi 



Aichi Prdfecture 



1. Vessel - S^iratciri Maru 



2. lyoe of opercxtlons - Exploration of ilbacore fishing fjrounda 



3. Cutlinr: of operations 



;Vork en th9 hull and engine of this vessel was completed in April, 1939, 

 and the construction of fishing gear vtas b-^oun on May 3 . On the llt,.'i the 

 vessel depart-cd I'iya Har-bor and put in at 3h:.::iEu to correct the convoass 

 error and to take on scpg fishing cu^pliPD. On the 1/th the vesfsei put in 

 at Kisaki and leaded baitj ice, and fret^h water. V;iuh all preparatr-.chs for 

 the survey completed the operations described below ^lera begun. In the 

 trips to and from the fishing grounds Great Circle courses were always 

 followed in order to cut down expenses. 



First Cruise 



The vessel sailed from Misaki on the morning of MslJ 16 and headed for 

 the fishing grounds. On May 27 the a3signed operating area was reached 

 and as oceanographic observations indicated a favorable fishing ground, 

 fishing was comjiencad at once. As Y.'as ej.pectjd.. tha fishing pi-Q-ved to be 

 good and the ves'^el fished continuously for 17 operations, selucting 

 suitable water zones in the vicinity. On Jime 12 the vessel headed back 

 to port with a full load. Arriving at Misaki at 7s00 A.M. June 23, 

 approximately three-fifths of the catch Yi/as landed and sold immediately, 

 the rest of it being disposed of the following day. As is shown in 

 Operations Sunmiary Table (l), the value of the fish landed v;as ¥ 3,665.54, 



On this cruise on the v;ay to the fishing groimds a large school of 

 skipjack was seen on Ii;ay 17 about 170 mile? east of Inubozakl in a water 

 temperature of 20.3°. On the lE?th foMr albacore were taken on the trolling 

 lines in water of 15.6°. On the 19th five albacore were taken in T/atar of 

 14.. 5-17°, and on the 20th nine ¥;ere taken in water temperatures of 

 16.9-17.5°. 



"'ater temperatures on the fishing Trounds ranged from 16.5° to 19.5°, 

 for an average of about 17.7°. The sea was generally calm and the fishing 

 was good. 



Since on this cruise there were good prospects of getting a full load 

 right from the start, only the fins (and I6 c'cins) of most of the sharks 

 /Galeus glaucus_7 were taken. In order to save space for fish stowage in 

 the lalitar JDart of the cruise some of the sharks were kept in iced brine. 



a 



