The liquid transportation uses a tank container, recently a new method to transport the bag which filled with liquid with the container was carried out experimentally. But, bulge or strain of the wall which loaded with liquid bag onto a container are unidentified. In this study, the authors used the 20ft container and filled the bag with water and measured the deformation and strain of the wall. As a result, a state of the bulge of the side wall became clear. The bulge of the wall was equal to or less than 18mm at the center of the container and clear that it was the transformation of the tolerance level. In addition, change of the strain and the influence of the acceleration became almost clear, too.
