This work presents a contribution to solving the problem of identification of ship model parameters using the experimental results from a particular trial test. The innovation of this paper lies in the fact that for this identification purpose it is necessary to know only the turning radius that describes the ship during the performance of the turning test trial. A relatively complex nonlinear model of Norrbin has been chosen as a basis because it represents the ship's dynamics appropriately, as proven through experimental measurements obtained during the course change test. The proposed algorithm of identification of the four ship model parameters is based on an adaptive procedure and the backstepping theory. Another additional coefficient can be determined by an alternative procedure. The knowledge of the true values that characterize the dynamic of a ship is fundamental in the ship steering control that is carried out by autopilots. The simulation results show the suitability of the proposed procedure.

El desarrollo conseguido por las energías renovables en los últimos años estuvo motivado en parte por el auge conseguido por la energía eólica, que destaca por la no emisión de substancias tóxicas al medio, aunque el proceso de instalación y construcción de los parques eólicos por parte de las empresas promotoras, no es inocuo. A pesar de la existencia de una amplia normativa, a nivel internacional, de España y Galicia, no se cumplen las condiciones mínimas exigidas para garantizar el respeto sobre el ambiente, y una parte importante de los parques eólicos están situados en espacios protegidos de la Red Natura 2000. Palabras clave: parques eólicos, energía eólica, impacto ambiental, empresas promotorasThe environmental implications of wind energy in Galicia ABSTRACT:The development achieved by renewable energy in recent years was driven in part by the growth achieved by the wind, which had the non-emission of toxic substances into the environment, although the process of installation and construction of wind farms by development companies, is not innocuous. Despite the existence of a wide standards, international, Spain and Galicia, are not met minimum requirements to ensure respect for the environment, and an important part of the wind farms are located in protected areas of the Red Natura 2000.