"Length of working time and walking activity of crew members on board a 1,000 G.T. fishery training vessel during midwater trawling."
1998
"Maeda, H. (Shimonoseki Univ. of Fisheries, Yamaguchi (Japan)) | Shimokawa, S. | Hamaguchi, M. | Funado, K. | Ozono, H. "
"The present report deals with the relation between working conditions and the length of time for shooting and hauling a midwater trawl or the walking activity of the respective crew members during this work, using the records collected from a 1,000 G. T. fishery training vessel in Nov. and Dec. of 1997 in the waters off the east coast of Japan. Whether or not the time length and the walking activity were affected by the variables which may affect them through the physical or psychological conditions of the crew members, was examined by estimating multipule linear regression equations. The obtained equations indicated that 1) The time length for shooting the trawl depended on the probable length of the time for confirmation of the net mouth being safely opened and that for hauling depended on the length of the warps. These time lengths could not be free from the influence of the working conditions, through the activity of the crew members involved. 2) The equations for the walking activity of the respective members during this work included some variables the probable influence of which was through the conditions of the crew members. 3) The estimated equations suggested that the actually adopted explanation variables had a relation to the allotted charge on board."
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