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An Experimental Study on IMO 2nd Generation Stability Assessment in Dead Ship Condition of 13K Chemical Tanker

13K Chemical Tanker의 기관 제어 불능상태 IMO 2세대 안정성 평가에 관한 실험적 연구

  • Lee, Sang-Beom (Ship and Ocean R&D Institute, Daewoo Shipbuilding & Marine Engineering Co. Ltd.) ;
  • Moon, Byung-Young (Department of Shipbuilding & Marine Engineering, Kunsan National University)
  • 이상범 (대우조선해양 선박해양연구소) ;
  • 문병영 (국립군산대학교 조선해양공학과)
  • Received : 2021.10.31
  • Accepted : 2022.01.28
  • Published : 2022.04.20

Abstract

The stability of the existing ships has been evaluated through numerical calculations in the steady-state, but recently the IMO proposed a new stability assessment criteria that the stability is evaluated in the state in which environmental loads from such as waves and wind act like the loads under actual ship operating conditions. In this study, IMO 2nd generation stability assessment method and procedure were summarized for the dead ship condition, and Direct Stability Assessment (DSA) was performed on 13K chemical tanker through basin model test. The model test is performed in the ocean engineering basin to implement wave and wind loads, and environmental conditions for waves were set height and period of the incident wave, considering the regular wave and wind generation range reproducible in the ocean engineering basin. In addition, to consider the effect of wind speed, the Beaufort Scale for wind speed was applied in the model test.

Keywords

Acknowledgement

본 연구의 모형실험은 중소조선연구소 해양공학수조에서 수행되었으며, 실험을 지원해 주신 중소조선연구원 담당자들께 감사드립니다.

References

  1. Choi, J.H., Jensen, J.J., Kristensen, H.O.H., Nielsen, U.D. & Erichsen, H., 2017. Intact stability analysis of dead ship conditions using FORM. Journal of Ship Research, 61(3), pp.167-176. https://doi.org/10.5957/JOSR.170005
  2. IMO(2017a), Draft Guidelines of Direct Stability Assessment Procedures for Use with the Second Generation Intact Stability Criteria, SDC 4/WP.4 Annex1.
  3. IMO(2017b), Draft Guidelines of Direct Stability Assessment Procedures for Use with the Second Generation Intact Stability Criteria, SDC 5/INF4 Add.1.
  4. IMO(2020), Draft Guidelines of Direct Stability Assessment Procedures for Use with the Second Generation Intact Stability Criteria, SDC 7/WP.6.
  5. Lee, C. & Kang, C., 2004. Hull Form Study for 21C 13K Chemical Tanker. KRISO Model Test Report. No. BSIO2610-04601E.
  6. Oliveira, M.C., Kassar, B.B.M., Coelho, L.C.G., Monteiro, F.V., Santis, R.T., Castillo, C.A.R., Neves, M.A.S., Polo, J.C.F. & Esperanca, P.T.T., 2019. Empirical and experimental roll damping estimates for an oil tanker in the context of the 2nd generation intact stability criteria. Ocean Engineering, 189, pp.1-13.
  7. Paroka, D., Ohkuwa, Y. & Umeda, N., 2006. Capsizing Probability Prediction for a Large Passenger Ship in Irregular Beam Wind and Waves: Comparison of Analytical and Numerical Methods. Journal of Ship Research, 50(4), pp. 371-377. https://doi.org/10.5957/jsr.2006.50.4.371
  8. Rodriguez, C.A., Ramos, I.S., Esperanca, P.T.T. & Oliveira, M.C., 2020. Realistic Estimation of Roll Damping Coefficients in Waves based on Model Tests and Numerical Simulations. Ocean Engineering, 213, pp.1-21.
  9. Vassalos, D., Jasionowski, A. & Cichowicz, J., 2003. Weather Criterion - Questions and answers. Proceeding of 8th International Conference on Stability of Ships and Ocean Vehicles, Madrid, Espana, pp. 695-707.