The experiment-basedvibration analysis is an essential component in shipbuilding design anddevelopment. The Natural Vibration on a Ship model unit helps studentstake their first steps in the field of experimental vibration analysis or modalanalysis of structures. Using this trainer, the dynamic behaviour of a shipstructure is studied, teaching students the fundamentals of experimentalvibration analysis. The Natural Vibration on a Ship model can be used tomeasure and record the natural frequencies and modes of a model ship. Thesimple, idealised ship shape makes it easier to approach the problemmathematically. The plastic model ship has nine ribs and an elliptical lineplan. The model ship is attached to a rigid cross-member by springs. Theenclosed box cross-section with high rigidity means the natural frequency ofthe cross-member is negligibly high. An electrodynamic vibration exciter causesthe model ship to vibrate. A function generator produces the excitation signal,which can be adjusted in amplitude and frequency. An arbitrarily positionableacceleration sensor measures the models response to the excitation signal. Inthis manner, the transfer functions for various points of the model ship can begenerated step by step. These can be used to determine the vibration modes forvarious natural frequencies.