DOI QR코드

DOI QR Code

Development of Stability Index for Vessel Operators Support System

선박 운항자 지원 시스템용 선박 복원성능 지수 개발

  • Received : 2017.09.18
  • Accepted : 2018.02.26
  • Published : 2018.02.28

Abstract

All ships should ensure stability in accordance with IMO regulations. However, GM is only used to determine ship stability because it takes a lot of time to validate all regulations. This is a problem given that the safety of vessels cannot be guaranteed, potentially leading to accidents. There is a need for a more intuitive and comprehensive method of confirming the stability of ships. This study developed a stability index that expresses ship stability in one value. An index equation is defined based on the 6 stability criteria for ships prescribed by IMO and the result of calculating the ship stability of a model ship. A stability index has been derived for each loading condition by applying the index equation to the same ship. It can clearly be seen that this stability index appropriately explains the criteria. In other words, it is possible to assess ship stability with one value and confirm whether the ship stability satisfies IMO regulations. This index will help masters and officers more easily and accurately check ship stability.

선박의 안전 확보를 위해 준수해야 하는 IMO 복원성 규칙에는 복원정 곡선(GZ Curve) 등에 관한 내용이 다양하게 규정되어 있다. 이 IMO 복원성 규정에는 다양한 항목의 만족 기준이 제시되고 있으나, 선박을 운항하는 선장에게 선박의 복원성능을 종합적이며, 간편하게 제공할 수 있는 방법은 부재한 상황이다. 이를 위해 본 연구에서는 복원성을 하나의 값으로 표현할 수 있는 지수를 개발하였다. IMO에서 규정한 선박의 6가지 복원성 항목과 대상선박의 적재상황에 따른 복원성 계산결과를 바탕으로 지수산정식이 도출되었다. 또한 개발된 지수산정식을 적용하여 다양한 화물 적재 상황별 복원성 지수(Stability Index)를 계산하였으며, 복원성능의 전반적인 정도를 수치적으로 적절하게 설명할 수 있음을 검증하였다. 이는 선박의 선장에게 복원성 평가하고 판단하는데 도움을 줄 것으로 판단된다.

Keywords

References

  1. Bulian, G.(2010), Checking vulnerability to pure loss of stability in long crested following waves, Ocean Engineer, pp. 1007-1026.
  2. Choe, B. R.(2016), A Study on the Relationship between Ship Stability and Maneuverability Using Free Running Model Experiments, J. Navig. Port Res. 40(6), pp. 353-359. https://doi.org/10.5394/KINPR.2016.40.6.353
  3. Ham, S. J., I. K. Kang, H. S. Kim, H. J. Jo and J. C. Kim(2011), Stability of the offshore large purseiner in Korea, The Korean Society of Fisheries Technology, 47(3), pp. 241-247. https://doi.org/10.3796/KSFT.2011.47.3.241
  4. IMO(1985), Recommendation On a Severe Wind and Rolling Criterion (Weather Criterion) For the Intact Stability of Passenger and Cargo Ship of 24 metres in Length and over, Resolution A.562(14).
  5. IMO(1993), Code On Intact Satability For All Types of Ships covered by IMO Instruments, Resolution A.749(18).
  6. IMO(2008), Adoption of the International Code on Intact Stability (2008 IS CODE), Resolution MSC.267(85).
  7. Jeong, J. H., S. J. Lee and B. Y. Moon(2013), Evaluation of Stability and Roll Damping Effect according to Change the Hull Form of Fishing Boat, The KSFM Journal of Fluid Machinery, 16(2), pp. 5-9. https://doi.org/10.5293/kfma.2013.16.2.005
  8. Jeong, S. J. and H. C. An(2014), Stability of fishing vessel according to the LED luring lamp installation, The Korean Society of Fisheries Technology, 50(4), pp. 623-632. https://doi.org/10.3796/KSFT.2014.50.4.623
  9. Jo, H. J., I. K. Kang, B. G. Kwon, S. J. Ham, C. W. Park(2014), The stability of the side trawler operating in East Sea of Korea, The Korean Society of Fisheries Technology, 50(3), pp. 378-384. https://doi.org/10.3796/KSFT.2014.50.3.378
  10. Kang, G. J. and B. Y. Moon(2015), Restoring Characteristics of Windy Leisure Boat Associated to Sailing Angle of Attack and Effect of Side Force, J. Korean Soc. of Marine Engineering. 39(1), pp. 13-18. https://doi.org/10.5916/jkosme.2015.39.1.13
  11. Kim, D. Y., C. W. Lee, D. K. Lee and D. K. Oh(2014), Characteristics of a CFRP Cruiser's Windage Area by Stability Assessment, J. Korean Soc. Mar. Environ. Saf 20(6), pp. 774-780. https://doi.org/10.7837/kosomes.2014.20.6.774
  12. Kim, H. G.(2014), A Study on Hull Structure Analysis for Improving Stability of Sailing Catamaran Yachts, Chonnam National University, Masters dissertation.
  13. Lee, A. R., I. K. Kang and H. J. Jo(2009), A Study on the stability of a crab trap fishing boat with water tank experiment, J. Kor. Soc. Fish. Tech. 45(4), pp. 267-275. https://doi.org/10.3796/KSFT.2009.45.4.267
  14. Long, Z. J., J. H. Jeong and B. Y. Moon(2013), Probability Prediction of Stability of Ship by Risk Based Approach, The KSFM journal of fluid machinery. 16(2), pp. 42-47. https://doi.org/10.5293/kfma.2013.16.2.042
  15. Neves, M. A. S. and C. A. Rodiriguez(2007), Influence of non-linearities on the limits of stability of ships rolling in head seas, Ocean Engineering, pp. 1618-1630.

Cited by

  1. 선박의 운항 상태를 고려한 선종별 안정적인 GM 운용에 관한 연구 vol.44, pp.4, 2018, https://doi.org/10.5394/kinpr.2020.44.4.275
  2. A quantitative methodology for evaluating the ship stability using the index for marine ship intact stability assessment model vol.13, pp.None, 2018, https://doi.org/10.1016/j.ijnaoe.2021.01.005
  3. Analysis of the Relationship between GM and IMO Intact Stability Parameters to Propose Simple Evaluation Methodology vol.9, pp.7, 2018, https://doi.org/10.3390/jmse9070735