Development of sea transshipment techniques for Japanese saury stick-held dip net fishery
2019
Abo, J. (Tohoku National Fisheries Research Institute, Japan Fisheries Research and Education Agency, Hachinohe, Aomori (Japan)) | Hiramatsu, T. | Taniguchi, M. | Takahashi, K. | Ochi, Y. | Yamashita, H.
To utilize Pacific saury (Cololabis saira) resources in remote seas by Japanese fishing vessels, the use of carrier vessels should be considered. However, efficient technology for offshore transshipment of captured fish from the fishing vessels to the carrier vessels is required. We compared two developed transshipment methods that use either a net for transferring the catch or utilize a fish pump to transfer the catch from the fishing vessel to another fishing vessel that is intended to be used as the carrier vessel. The role of the carrier vessel was fixed for two vessels between 2010 and 2012, whereas the carrier role was attributed to all five vessels as required in 2013. Our results indicated that the fish pump method was more effective in terms of working hours, required number of crew, workload, and safety. The mean loading rate (rate of landed fish amount against the maximum load) among vessels was higher when the fish pump was used and the carrier role was attributed to all vessels than that for the other method. In conclusion, a dual-directional transshipment method among vessels using the fish pump is suggested as the most effective fishing operation method for the Japanese fleet.
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