Model-based algorithmic support for an automated decision-making system in the event of a potential loss of lateral stability for a river passenger vessel

This paper addresses the issue of ensuring the safety of passengers and crew on river displacement vessels in the event of an emergency reduction in their transverse stability reserve. From the standpoint of the stability and buoyancy requirements of the Rules of Classification and Construction of Ships, a brief analysis of accidents on inland waterways in Russia is completed. The concepts of intensity functions for the change in the first and second threshold values of a vessel's transverse stability characteristics are introduced. A model and algorithm for assessing the ship's stability reserve in real-time are developed, based on comparing the mutual positioning of these functions' graphs and the current heel angle. The architecture of an automated decision support system for the captain in the event of a threat of losing transverse stability has been developed. The results of experimental studies on a scaled physical model of a mass-produced passenger displacement vessel hull demonstrated the adequacy of the proposed theoretical model for assessing the risk of losing transverse stability in real-time. The implementation of automated systems of this type on river vessels will contribute to enhancing navigational safety on inland waterways in Russia.