A tragic disaster happened by capsizing O–Ryong 501 trawler at Western Bering Sea in 1st, Dec. 2014. The disaster was caused by the severe weather and the long deferred escape from the storm in fully developed high sea. Lots of sea water from poop deck rushed into the fish ponder with fishes all together after hauling net and then remove the fishes from codend. The vessel became to incline to the one side caused by the weight and the free surface effect of flood sea waters and fishes at initial stage. In spite of crews all effort to discharge the waters, but the work was not achieved successfully. For the worse thing, the order of abandon ship was issued too late. After all, the ship capsized and sank, then almost crews became to the victims of the casualty including captain. In this paper, author carried out restrictively the calculation of dynamic factors influenced on the disaster including the weather condition and effects of the flood sea waters, and found out that the most important causes of the disaster were the decrease of stabilities, GM was decreased from 0.9m to 0.08 m, and the high waves which led to the vessel disaster.

• 김용직 | Yong–Jig KIM
• 강일권(부경대학교 조선해양시스템공학과) | Il–Kwon KANG (Dep. of Naval Architecture & Marine System Engineering, Pukyong National University, Busan 608–737, Korea) Corresponding author
• 함상준(부경대학교 조선해양시스템공학과) | Sang–Jun HAM (Dep. of Naval Architecture & Marine System Engineering, Pukyong National University, Busan 608–737, Korea)
• 박치완(부경대학교 조선해양시스템공학과) | Chi–Wan PARK (Dep. of Naval Architecture & Marine System Engineering, Pukyong National University, Busan 608–737, Korea)