Abstract The research considers a fast ferry with active appendages (actuators): a T-foil near the bow and transom flaps. The objective is to attenuate the ship's vertical motions. There is a problem of control design, to move the actuators in the most effective way. For an easy and safe control study, a simulation tool has been developed using MATLAB and SIMULINK: a modular architecture results where it is easy to integrate control strategies to be analysed. Simulated experiments can be run with the tool, to see the behaviour of the important variables: vertical motions of the ship, motions of the actuators, sea-sickness incidence, etc. The paper describes the simulation tool from a functional point of view, and explains some details of the main parts of its internal structure.
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