This study is intended mainly to investigate collision force due to a drifted container by run-up tsunami. Laboratory experiments were conducted to investigate behavior of run-up tsunami and drifting container. Moreover, effect of vertical wall to reduce run-up tsunami was observed. Results show that the vertical wall installed at the leading edge of apron can reduce wave forces acting on container, which may lead to reduce drift of containers. This study also conducted numerical simulation of collision of container with concrete column. It is revealed that the present analyzing method is useful in such simulation.
