Residual Longitudinal Strength of a VLCC Considering

Abstract This paper provides prediction of ultimate longitudinal strengt hs of hull girder of a VLCC considering probabilistic damage ex tents due to collision and grounding accidents based on IMO Guideline(200 3). The probability density functions of damage extents are exp ressed as a function of nondimensional damage variables. The accumulated probability levels of 10%, 30%, 50%, and 70% are taken into account for the damage extent estimation. The ultimate strength s have been calculated using in-house software UMADS (Ultimate Moment Analysis of Damaged Ships) which is based on the progres sive collapse method. Damage indices are provided for all heeli ngangles due to any possible flooding of compartments from 0°to 1 80°which represent from sagging to hogging conditions, respecti vely. The analysis results reveal that minimum damage indices show di fferent values according to heeling angles and damage levels.Keywords : Collision(충돌), Grounding(좌초), Probabilistic damage(확률론적 손상), Residual longitudinal strength(잔류 종강도)