The Form of Amber-fish Keddle Net on the Basis of Model Experiments

Abstract

The original keddle net, of which a model was made for study, was set at Iwae, Kanagawa Prefecture, for fishing amber-fish, Seriola. The modelling was completed according to T_AUTI'S principle of model-net construction.
The form of model net was sketched both from above and lateral sides under the current in the prevailing directions in Iwae fishing ground. The sketches are reproduced in Fig. 4, in which the figure at the left end of the third row shows three prevailing directions of current, A, B and C, and the others in the first, second and third rows show the form of net under the current in respective directions and of various velocities.