Author(s)

Imed El Fray & Zbigniew Kubik

Abstract

The aim of the presented paper is to compare the fin stabilizer's efficiency depending on the steering method and selected controller adjustment. A digital simulation technique was used in order to evaluate the control methods on reduction of the ship resistance. It was found that the classical controller was more effective than optimal controller, but it can generate a bigger fin angle of attack. Optimal controller and optimal controller with the predictor generated lower fin angles of attack what provided much lower decrease of ship velocity at progressive motion when compared with classical controller characterised by greater decrease of ship velocity. As an effect, the increase of the ship dra

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