まぐろ揚収装置「パワー・スプーン・ネット」の試作について

概要

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The training ship KEITEN MARU (854.55 gross ton), which belong to the Faculty of Fisheries at Kagoshima University, adapted the complete superstructure vessel type and owing to that type the safety in fishing the tuna long line and the operation efficiency increased greatly, but it became difficult to take in fish with the former way because there was much height between the upper deck and the sea level. So we made the power spoon net and fitted it to our ship to make work of taking in fish easy to mechanize its process. This machine is made of the mast which goes up and down by the hydraulic cylinder and the spoon net attached to the arm which rotates on the mast. We used this machine tentatively and got the results as expected, though there is some room for some improvements in minute points.
1975-11-30