The fishing conditions of flying squid, ommastrePhes barsram(Lesueur), in the North Pacific Ocean was studied based on the horizontal water temperature data, satellite data from NOAA and statistical data of flying squid fisheries which were collected from 1980 to 1984. The obtained results were as follows; 1. Since 1979, the Korean drift giIlnet fishery for flying squid was launched in North Pacific. Number of operating vessel and catch of flying squid increased gradually every year. The number of vessels were 111 and their annual catches were 42, 977 M/T in 1984. Therefore, Korean drift giIlnet fishery for this species has played an important role in the products of Korean high-sea fisheries. 2. In the beginning of the fisheries, fishing grounds was formed in the west of long. 1800E. In 1982, in consequence of the center which extended eastward, the fishing ground was formed long. 166˚W in the central North Pacific Ocean. Since 1983, the fishing grounds were formed as far as long. 161˚W. The range of general fishing season in the central North Pacific was from June to August. After september, fishing ground was shifted to the west, in the Northwestern Pacific. 3. The Predominant fishing season for the flying squid was August through January of the coming year. Optimum water temperature for flying sguid at surface layer in the Pacific Ocean ranged from 11 ˚e to 17˚e in winter, 13˚e to 17˚e in spring, 12. 8˚C to 19.7˚e in summer and 1O.6˚e -18.7˚e in fall. 4. In summer, the Oceanographic condition in the North Pacific Ocean showed that the water temperature at surface layer was lower in 1980, 1983 and higher in 1981, 1982 and 1984 as compared with mean annual water temperature. 5. The characteristics df oceanographic conditions in the fluation, disformation, mixing and other factors of the Kuroshio and Oyashio currents, which have considerably influenced upon the water masses of the areas. 6. The data and information on surface thermal Structure interpreted from Infrared Satellite Imaginary from NOAA-7 and NOAA-8 are very available in estimating water temperature on the areas and investigating the major fishing grounds. 7. According to the fisheries statics of Japanese drift gilInet, the annual catches of flying squid considerably decreased from 225, 942 M/T in 1983 to 133, 217 M/T in 1984. 8. The fishing grounds in the central North Pacific in several fishing seasons were formed as follows: In June, the initial fishing season, the fishing grounds were formed in the vicinity of lat. 35 - 40oN, the central North Pacific east of 179˚E. In July, the fishing ground were formed in the wide arEa of the central North Pacific north of 400N and long. 174˚E-145˚W In Auguest, concentrative fishing operation carried out in :he central North Pacific north of 43˚N and East of 165˚W. On the other hand, in September, main fishing grounds were disappeared and moved to the west.

南大洋의 크릴(krill)資源에 關한 本格的인 調査는 1961年 소련이 처음 着手한 以後 日本을 위시한 各國이 參與하고 있다. 1968年 現在 南大洋의 調査에 參與하고 있는 國家는 漁業에는 日本 소련 서독 프랑스 臺灣 칠레 폴란드等 7 個국이, 處理加工 誠驗에는 노르웨이 덴마크 모나코 남아프리카等 4 個國이고, 그외 美國 알젠티나等이 資源硏究所 設立計劃과 資源評價및 技術練修등을 計劃함으로써 모두 13 個國이다. 그 중 日本 1961年에 東京수산대학의 “우미다까마루”로써 南大洋의 綜合的인 海洋觀測과 調査를 實施한 것이 시초이나. 本格的인 調査는 1972年 海洋水産資原開發센터에 의하여 着手되어 現在까지 6年째에 이르렀다. 1972~75年間은 試驗 및 漁場開發段階에 不過했으나, 1976年~1977年은 企業化로써 採算面에서 收支가 맞는 企業漁業으로 成長하였다. 試驗 및 漁場開發段階에 不過했으나, 1976年~1977年은 企業化로써 採算面에서 收支가 맞는 企業漁業으로 成長하였다.

Fishing explorations for tunas and demersal fish on the sea south west from Sumatra, south sea from Java, south sea from Bali and south sea from Soemba were carried out in 1973 by MIS TaeBeak-San (310 tons, 8001P) of Fisheries Research & Development Ageney, R. O. K. The results were found to be valuable for good fishing ground for tunas and demesal fishes.