@article{oai:nagasaki-u.repo.nii.ac.jp:00010285,
 author = {下田, 真子 and 兼原, 壽生 and 木下, 宰 and 森井, 康宏 and 高山, 久明},
 journal = {長崎大学水産学部研究報告, Bulletin of the Faculty of Fisheries Nagasaki University},
 month = {Mar},
 note = {We made a turning trial of a twin-engine, twin-propeller, and twin-rudder ship “KAKUYO MARU”,
that has equipped the two sets of main engines and rudders, and a comparison was made between two
engines and one engine as well as between two rudders and one rudder about the factors of turning. The
trial results are stated below.
1) Comparing to the operation of two engines, the ratio of steady turning diameter (D/L), the speed
reduction rate (RATE), and the time for turning (TIME) were large when the position of engine
and the turning direction was the same. And, these decreased when rudder angle was large. Also,
the drift angle (ANGLE) was small and increased when rudder angle was large.
2) In comparison with using two engines, D/L and TIME when using one engine and turning to the
opposite direction of engine position were small and increased when rudder angle was large. Also,
the RATE and ANGLE were large and decreased when rudder angle was large.
3) When using one engine, D/L and TIME of turning by one rudder were 1.1 to 1.6 times larger than
these of turning by two rudders at both turning directions and decreased when rudder angle was
large. Also, RATE and ANGLE were as small as 0.7 to 1.0 times and increased when rudder angle
was large., 長崎大学水産学部研究報告, 93, pp.1-10; 2012},
 pages = {1--10},
 title = {2機2軸2舵船「鶴洋丸」の旋回性能に関する考察‐Ⅱ},
 volume = {93},
 year = {2012}
}