@article{oai:ir.kagoshima-u.ac.jp:00002326,
 author = {狩俣, 忠男},
 issue = {1},
 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 author had the chance to investigate into the effect of the change of rudder area on the
maneuverability of the ship, through the two ships.
One of them named No.32 SUMIHOH MARU (G.T. 131.95 tons) had her hull extended by
2.6 meters in order to enlarge her live fish hold. After that, on the claim of the crew that the
maneuverability of the ship got worse than before, she was remodeled again ; the increase of the
rudder area by about 8% and the shape change of the rudder into square type. The other ship
named NANSEI MARU (G.T. 82.97 tons) also had her hull prolonged by 1 meter in order to
increase the capacity of the crew's accommodation and the fresh water tank.
The measurement was carried out on those two ships before remodeling work and after that
through Zig-zag test and turning trials to study the relation between the rudder area and
maneuverability.
The following results are obtained :
1) The increase of the rudder area made No.32 SUMIHOH MARU improve her turning ability
and quick responsibility and stability in steering. And they can got the expected result.
2) Concerning NANSEI MARU, the variety of each factor of the ship depends on the length
of her hull. So we may as well regard this ship after remodeling work as different from that
before remodeling work, and compare them by using zero dimension maneuverability indices K' and T'.
3) Even if the variation of the rudder area ratio may be small, it seems to have influence on the
quick responsibility and stability in steering of ship., 舵面積を大きくする改装を行った第32住宝丸および船体延長工事を行なった南星丸の2隻の船について,改装前および改装後にZ試験および旋回試験を実施して操縦性の変化を調査し,次の結果を得た。1. 第32住宝丸は舵面積を約8%大きくすることにより,旋回性,追従安定性共に向上し,所期の目的を達成することができた。2. 南星丸のような船体延長の場合は,船体諸元が変わるため2隻の異なる船として考え比較することが適当である。3. 舵面積比が僅かに変化する場合は,旋回性よりも先ず追従安定性にその影響が現れるものと思われる。},
 pages = {133--143},
 title = {舵面積が船の操縦性に及ぼす影響について},
 volume = {35},
 year = {}
}