Three-mode pneumatic management of marine U-tank systems

► Pneumatic control strategy for the damping enhancement of conventional U-tank stabilizers. ► Three-mode operation type, where the control is activated only within a limited resonant range. ► Equivalent linearization for modelling the turbulent air flow through the communication valves. ► Optimization process for the best operation within the limits of stability and control power. ► Roll amplitude reduction of 20-40% roughly in the resonant neighbourhood.