To optimize structure design it is useful to conduct detail physical model tests. Tests of various basic physical phenomena (e.g. resonance problems), reproducing a sea state of prototype duration and then from the behavior of entire structure, the optimal design to the wharf structure will be obtained. Preliminary analyses are made by basing upon experience for structure submitted to the similar action of wave or climates, combined with knowledge of available construction materials, i.e. selection of the rubber fender and the mooring system. Therefore, ship impaction force model simulation could lead to an ideal design. A lot of experimental research work is conducted in order to facilitate determination of its test value when different factors are involved. Some design recommedations are commonly based on experimental results rather than that from mathematical iterations.