The Construction of New Automatic Trawling System on Fisheries Training Ship ”KOYO MARU” (2,300 GT size)

漁業練習船“耕洋丸”（2,300GT型）の 新オートトロールシステムの構築

The Construction of New Automatic Trawling System on Fisheries Training Ship ”KOYO MARU” (2,300 GT size)

Creators Hamaguchi Masato

Creators Uchida Kazuyoshi

Creators Nagamatsu Kimiaki

Creators Kawasaki Junji

Creators Shimokawa Shin-ya

Creators Kamano Tadashi

Creators Tabuchi Kiyoharu

Creators Kinoshita Hiromi

The fisheries industry profitability is declining, due to diminishing resources, increasing imports, fish prices remaining low and fuel oil prices increasing. With the objectives to promote a stable supply of sea-food products now and into the future, the Fisheries Agency of Japan has established a committee to review the structural reforms of fishing vessels and fisheries for the purpose of implementing comprehensive programs to improve the industry profitability, to grow succes-sors and to nurture internationally competitive opera-tions. One of their targets is to modify fishery by using fishing vessels with energy-, labor- and power-saving operations with reduced costs. In view of such objectives, and with the next gener-ation of training ships, the KOYO MARU is to be newly constructed, The National Fisheries University reviewed a system to save energy, labor and power requirements for trawler operations, and has developed an unconven-tional and automatic Self-Trawl & Navigation System (STNS). Examinations of the STNS operation carried out to be adjustments for control of net-trawling models and para-meters determination. Trawl Net in Surface, Middle. Bottom and Deep-sea Bottom operated in the East China Sea and measured 3D objects recognition of otter-board, trawl net and the other necessary information for system control. This report provides a review of STNS as well as the characteristics of trawl net and its equipments by the experiments.

[ISSN]0370-9361