ANALYSIS OF ROLL STABILIZER PERFORMANCE

A short review of the mathematical formulation of the seaway and the ship motion responses with special reference to rolling is given, where as measures of effectiveness of roll damping devices are briefly discussed. Full scale rolling experiments with a motoryacht in still water and in waves are analyzed. The performance and design of fin-stabilizers is dealt with on the basis of experimental results and common hydrodynamic knowledge. The use of rudders as roll stabilizers seems to be rather promising according to full scale motoryacht experiments.