@article{oai:ir.kagoshima-u.ac.jp:00000758, author = {源河, 朝之 and 松野, 保久}, journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University}, month = {2016-10-27}, note = {The measured magnetic-compass deviation enstalled on board the Nansei-maru, a fishing-training ship, Faculty of Fisheries, Kagoshima University, was analyzed over eight times from the time of completion to the present and examined the yearly fluctuation, with the following items ascertained. 1) It seems the permanent magnetism of the Nansei-maru was stabilized in about six months. 2) The values of them agnetic-compass-deviation of the Nansei-maru shown a great value as compared with the Kagoshima-maru and the Keiten-maru, Faculty of Fisheries, Kagoshima University. But it seems the Nansei-maru took a short time until the stabilization of the permanent magnetism. This may be due to the power of impact for the amount used of iron and construction materials. 3) When set a radar in motion, the measured maximums of the magnetic-compass-deviation was 2.7° in case of the steering-compass as compared with when a radar stopped. 4) In case of such a small sized ship as the Nansei-maru should pay attention because creation or remodeling of various kinds of equipments at the bridge of the ship and its vicinity have a great influence on the change of the magnetic-compass-deviation.}, pages = {115--123}, title = {漁業練習船南星丸の船体磁気の安定について}, volume = {18}, year = {} }