Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
권호 표지
DOI QR코드

DOI QR Code

An Experimental Study on the Manoeuvrability of a Ship in Different GM and Trim Conditions

GM 및 종경사 변경에 따른 선박의 조종성능변화에 관한 실험적 연구

  • Yun, Kunhang (Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Dong Jin (Korea Research Institute of Ships & Ocean Engineering) ;
  • Yeo, Dong Jin (Korea Research Institute of Ships & Ocean Engineering)
  • 윤근항 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김동진 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 여동진 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2020.04.28
  • Accepted : 2020.06.01
  • Published : 2020.08.20
Download PDF
⟨ Previous Next ⟩

Abstract

The aim of this study was to investigate the manoeuvrability of a ship in different Center of Gravity (CG) conditions. Free Running Model Tests (FRMT), such as 35°turning circle tests, 20/20 zigzag manoeuvring tests, and 10/10 zigzag manoeuvring tests, were conducted in three GM and three trim conditions with 1/65.83 scaled KRISO Container Ship (KCS). The test results indicated that KCS in the lower GM condition and the trim by bow condition showed reduced advance and tactical diameter in turning circle tests and increased overshoot angles in zigzag tests, and those manoeuvring indices were strongly related with roll angle. In addition, sensitivity indices for three-axis CG position were suggested with prior research, and it showed that y-axis CG position significantly affected manoeuvrability of KCS due to the low GM. Therefore, in the case of KCS, it is evident that the roll angle during manoeuvre is closely related with manoeuvring indices.

Keywords

References

  1. Choe, B.R. & Im, N.K., 2016. A study on the relationship between ship stability and maneuverability using free running model experiments. Journal of navigation and port research, 40(6), pp.353-360. https://doi.org/10.5394/KINPR.2016.40.6.353
  2. Fukui, Y., Yoshimura, Y., Yano H. & Kondo, M., 2015. Investigation of effect of roll motion on manoeuvrability using 4-DOF mathematical model. Proceedings of the International Conference on Ship Manoeuvrability and Maritime Simulation, Newcastle, UK, 8-11 September 2015.
  3. Im, N., Kweon, S. & Kim, S.E., 2005. The study on the effect of loading condition on ship manoeuvrability. Journal of the Society of Naval Architects of Korea, 42(2), pp.105-112. https://doi.org/10.3744/SNAK.2005.42.2.105
  4. Korean Maritime Safety Tribunal, 2014. Safety investigation report. KMST Report.
  5. Korean Maritime Safety Tribunal, 2020, Statistics, URL: https://www.kmst.go.kr [Accessed 24 April 2020].
  6. Kim, H.S., Park, K.I. & Ha, M.K., 2001. Computerized measurement system of ship speed and maneuvering performance in sea trial. Journal of the Society of Naval Architects of Korea, 38(3), pp.54-61.
  7. Kim, Y.G., Yeo, D.J., Son, N.S., Kim, S.Y., Yun, K. & Oh, B.I., 2011. Prediction of mManeuverability of KCS with 4 degrees of freedom. Journal of the Society of Naval Architects of Korea, 48(3), pp.267-274. https://doi.org/10.3744/SNAK.2011.48.3.267
  8. SIMMAN, 2020, Instructions to participants, URL: http://www.simman2020.kr [Accessed 31 March 2020.
  9. Standards for ship monoeuvrability, IMO Resolution MSC.137(76) (adopted on 4 December 2002).
  10. Sung, Y.J. & Park, S.H., 2015. Prediction of ship manoeuvring performance based on virtual captive model tests. Journal of the Society of Naval Architects of Korea, 52(5), pp.407-417. https://doi.org/10.3744/SNAK.2015.52.5.407
  11. Yun, K. & Yeo, D.J., 2019. An experimental study on the manoeuvrability of a ship in heeled condition. Journal of the Society of Naval Architects of Korea, 56(3), pp.273-280. https://doi.org/10.3744/SNAK.2019.56.3.273
  12. Yun, K., Yeo, D.J. & Kim, D.J., 2018. An experimental study on the turning characteristics of KCS with CG variations. Proceedings of the International Conference on Ship Manoeuvrability and Maritime Simulation, Halifax, Canada, 12-16 August 2018.