@article{oai:ir.kagoshima-u.ac.jp:00007913,
 author = {源河, 朝之},
 journal = {鹿児島大学水産学部紀要=Memoirs of Faculty of Fisheries Kagoshima University},
 month = {2016-10-28},
 note = {The measured magnetic-compass deviation enstalled on board the Nansei-maru, a wooden-small-sized-fishing-training-ship, launched in April; 1967, was analyzed and brought into some
compensations, with the following items ascertained.
1) The measured maximums of the magnetic-compass-deviation was 24.7° w,ly in case of the
standard-compass, and 22.1° w,ly in case of the steering-compass, respectively. This may be due
to the effect of the ship-magnetism belonging of the deviation-co-efficient (B), but the detailed
process was left unclarified, yet.
2) By dint of the deviation-compensations executed on board the ship' the maximum was made
to be kept within about 1.5°, but before the establishment of this process it will be necessary to
have further investigations applied successively.
3) The narrowness of the bridge of the Nansei-maru made it imperative to pay the necessary
attentions in the handling of the instruments made of iron.
4) Even in case of such a small sized vessel as the Nansei-maru, to supply her with a magnetic
compass having excellent compensating equipment was deemed desirable., 1) 南星丸の磁気コンパス自差は基準コンパスで24.7°の偏西自差,操舵用コンパスで22.1°の偏西自差の最大値を示した。その原因は永久磁気的なものと思われるが,まだ明らかでない。2) 自差修正を行なった結果,最大値で約1.5°以内に納めることができたが,尚,今後の継続研究が必要である。3) 南星丸は船橋が狭いため特に鉄器類の取扱いについては十分な注意が必要である。4) 小型漁船と言えども修正装置の完備した磁気コンパスの装備が望ましい。},
 pages = {146--154},
 title = {木造小型漁業練習船南星丸の自差とその修正について},
 volume = {16},
 year = {}
}