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Analysis the factors on the capsize of passenger vessel Sewol

여객선 세월호의 전복 요인 분석

  • KIM, Jung-Chang (Div. of Marine Production System management, Pukyong National University) ;
  • KANG, Il-Kwon (Div. of Marine Production System management, Pukyong National University) ;
  • HAM, Sang-Jun (Dep. of Fisheries Physics, Graduate school, Pukyong National University) ;
  • PARK, Chi-Wan (Dep. of Fisheries Physics, Graduate school, Pukyong National University)
  • 김정창 (부경대학교 해양생산시스템관리학부) ;
  • 강일권 (부경대학교 해양생산시스템관리학부) ;
  • 함상준 (부경대학교 대학원) ;
  • 박치완 (부경대학교 대학원)
  • Received : 2015.08.27
  • Accepted : 2015.11.12
  • Published : 2015.11.30

Abstract

A historical tragic disaster happened by capsizing the passenger ship Sewol at South Western Sea of Korea in 16, April 2014. The ship which left Incheon harbour to bound for Jeju port passed Maengol strait and reached to approach of Byung Pung island, and then capsized and sank with a sudden inclination to the portside in the mean time of starboard the helm. In this time, the ship which has very poor stability without sufficient ballast waters and with over loading cargo listed port side caused by the centrifugal force acting to the outside of turning. A lot of cargoes not fastened moved to the port side consequently, and the ship came to beam end to capsize and sank in the end. No crews including especially captain would offer their own duties in a such extremely urgent time, as a result, enormous number of victims broke out including a lot of student. In this report, author carried out some calculation on the factors which influenced on the stability of the ship, i.e. the ship's speed, the rudder angle, the weight of cargoes and distance of movement, the surface effect of liquid in the tank. We found out that the most causes of capsize were the poor stability with heavy cargoes and insufficient amount of ballast water against the rule, and the cargoes unfastened moved one side to add the inclination as well. Above all, the owner be blamable because of the illegally operating the ship without keeping the rule.

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References

  1. Barrass CB and Derrett DR. 2006. ship stability. ISBN 13:987-0-7506-6784-5. 103-104.
  2. Korean Maritime Safety Tribunal(KMST). 2014. Safety investigation report of passenger vessel Sewol at capsizing. pp 91
  3. Yoon JD. 2013. Theory and practice of ship manoeuvring. publishing company Sejong 44, 48-50, 61, 63.