(With link to paper) Traditionally, the procedure to design anti-roll tanks is limited to the assessment of the reaction moment due to a regular roll motion. Although this may seem adequate for a badly rolling ship, neglecting the sway motion is by no means trivial for a well stabilised ship, which is the very purpose of the stabilising tank.
Moreover, older literature and previous studies showed that the response of the tank is non-linearly dependent on the amplitude and frequency of this complex excitation.
Marin has published a paper that summarises how the complex performance of the tank can be understood and what the consequences of this understanding are for the use of frequency domain methods to predict the motion response of a stabilised ship.
Download the paper from the Marin website.
Picture by Cmglee.
