作業時間の概況 (スケソウ漁業中の以東底曳船の作業時間-1,2-〔英文〕)

概要

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The records on the working time of respective hauls conducted by 22 of the Danish seiners belonging to an Alaska pollack fleet in the Bering Sea during the entire season of 1964, were analyzed in this series of works, in an attempt to find more detailed characteristics of the work pattern as well as to seek the clues to cause the trends found in the previous series of works1-3, 5-8). In this report, the outline of the work pattern was shown as the preliminary step. This is summarized as follows: 1. The boats worked chiefly in the daytime along the fly dragging. It was rare that the first hauling had finished before the sunrise and the last one began after the sunset, even during the season of short daytime or on the days of poor catch. 2. The laying time (20.2 min. on the average) and the sinking-pulling time (23.5 min. on the average), especially the former, were very small in the variation. 3. The hauling-brailing time showed a large variation, and its mode biased towards the class of short time (59.4 min. on the average). And the variation of the time to complete a haul was due to that of the time expended on this step of work. 4. The interval between succeeding hauls (17.8 min. on the average) varied greatly, showing the biase of the mode towards the class of short interval. During this interval, the boats engaged in the work of really rich in variety.
社団法人日本水産学会の論文