Damaged stability is mainly assessed by the static calculation. However, recent advance in computational fluid dynamics could enable us to predict the dynamic fluid motion and as well ship motion in the near future. Therefore, in this research, flooding and sinking due to damage opening, are experimentally measured for using simple floating model. On the other hand, the numerical simulation by using MPS (Moving Particle Simulation) method is conducted for same experimental conditions. MPS method is one of particle simulation methods which use moving particles interacting with each other instead of fixed calculation grids. This method can easily handle large free-surface deformation including fluid breakup, coalescence and fluid-rigid body interaction problems as well. As a first step to validation, the motion of the floating model is allowed only in vertical direction and MPS calculations were done in 2D. As a result, it is concluded that MPS method practically predict the fluid motion and ship motion obtained by the experiment.
