Flotation and stability of Ro-Ro vessel in the damaged conditions 1

The Ro-Ro vessels have a long tween deck without watertight bulkheads, and consequently stability can be critical in the damaged conditions.

Today efforts are being made to estimate the risk as reliably as possible, by the application of the probabilistic concept for surviving damage. But characteristics of damaged condition stability at large inclinations have not yet been included in that probabilistic approach, and it is necessary to examine them separately.

This paper presents the results of research into the flotation and stability of the Ro-Ro vessel at damages which also include the tween deck. The author’s approaches to minimum inclined stability and his methods and programmes are applied.