INTRODUCTION
In the last decade, ships have become larger and more diversified, however, ship accidents, such as collisions and groundings, continue to occur regardless of how a ship is designed, constructed, and operated. Therefore, damage safety has become a major issue from a design and operation viewpoint. The International Maritime Organization (IMO) also requires the use of goal-based standards (GBSs) to ensure safety against major hull damages. Classification rules, such as DNV and ABS, have been established regarding the extent and location of deterministic damage due to collision and grounding (Choung et al., 2011). Chapter II-1 of SOLAS contains a regulation regarding HMO's probabilistic damage stability requirements (IMO, 2009).