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A Study on Yaw-checking and Course-keeping Ability of Directionally Unstable Ships
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 Title & Authors
A Study on Yaw-checking and Course-keeping Ability of Directionally Unstable Ships
Sohn, Kyoung-Ho; Yang, Seung-Yeul; Lee, Dong-Sub; Bae, Jun-Young;
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 Abstract
Yaw-checking and course-keeping ability in IMO`s ship manoeuvrability standards are reviewed from the viewpoint of safe navigation. Three kinds of virtual series-ships, which have different course instability, are taken as test models. The numerical simulation on Z-test is carried out in order to examine the correlation between known manoeuvrability in spiral characteristics and various kinds of overshoot angle. Then simulator experiments are executed with series-ships in a curved, narrow waterway by six operators(five active pilots and one ex-captain) in order to examine the correlation between known manoeuvrability and degree of manoeuvring difficulty. IMC criteria for yaw-checking and course-keeping ability are discussed and revised criteria are proposed.
 Keywords
IMO′s ship manoeuvrability standards;Yaw-checking;Course-keeping;Simulator experiment;Manoeuvring difficulty;
 Language
English
 Cited by
 References
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