The fins gain their
linear oscillation (heaving) from ship pitching and heaving responses in irregular waves, while
wing's rotation (pitching) is properly controlled with respect to its vertical motion history. A
method, developed in our previous works, is applied for that purpose. The system operates in
realistic sea conditions modeled by using parametric spectra, taking into account the coupling
between ship responses and the hydrodynamics of the lifting appendages. We present numerical
calculations concerning the operation of the augmenting system indicating that, although the
present arrangement is designed for roll reduction purposes it can obtain significant amount of
thrust. Also it is illustrated that, after reposition of the fins near the bow, the performance of the
system can be further enhanced.