Pre-computed ship-motion history has been used in the multi-user Virtual Reality (VR) system VELOS in conjunction with a kinematically-oriented inclination steering behavior as simple means for considering the ef-fects of ship motion on simulated passengers’ movement. This first approach does not account for the dynamic nature of the phenomenon, thus ignoring mo-tion accelerations. Ship-motion accelerations, however, are critical to the as-sessment of a person’s balancing and/or sliding aboard ships and consequently to its capability of performing an assigned task. In this work, we are focusing on the exploitation of pre-computed ship motions and accelerations and we in-vestigate the usage of the concepts of Motion-Induced Interruptions (MIIs) and tipping coefficients in modeling the effects of ship-motion accelerations on pas-sengers.