RT Journal Article T1 Development of a control-oriented model of the vertical motions of a fast ferry A1 Esteban San Román, Segundo A1 Girón Sierra, José María Ricardo A1 Andrés Toro, Bonifacio de A1 Cruz García, Jesús Manuel de la AB As a main part of a research study on the control of active flaps and a T-foil of a high-speed ferry, a control-oriented model of vertical motions of the ship has been developed. The objective of the control is to improve comfort, decreasing the impact of heave and pitch motions. We have experimental data from a towing tank institution and simulations with PRECAL. The model is based on a decomposition of the physic phenomena into two main aspects: the coupling of the ship with distance between waves and the dynamics of a semisubmerged mass. The model can be handled with MATLAB-SIMULINK, which is useful for studying control strategies. The model shows good agreement (model validation) with the experimental and simulated data for regular and irregular waves. The article shows a methodology, based on MATLAB tools, for obtaining control-oriented models from computer-aided design (CAD)-based programs. That means that the control-oriented model can be derived from the ship design, even before the ship is built. PB Soc Naval Arch Marine Eng SN 0022-4502 YR 2004 FD 2004-09 LK https://hdl.handle.net/20.500.14352/51034 UL https://hdl.handle.net/20.500.14352/51034 LA eng NO The authors want to thank the support of the Consejo de Investigaciones Científicas y Tecnología (CICYT)Spanish Committee (projects TAP97-0607-C03-01 and DPI2000-0386) and the collaboration of the CEHIPAR staff and the advice of IZAR. NO CICYT DS Docta Complutense RD 10 abr 2025