The Probabilsitic Approach for the Damage Stability Assessment: an Application Case in the Specific Field of Megayacht Units

In recent years there has been a huge renewal activity in the field of safety regulations, especially for the damage stability assessment of passenger vessels. After the shift from deterministic to probabilistic approach, several urgent matters aroused in naval architects’ minds as well as in those of anyone in charge of safety assessments. One of the possible interesting points of discussion is “How to assess the ship damage stability in a prelimi-nary design phase?” In fact, the probabilistic approach for the residual stability evaluation in a damaged situation requires a high level of details and data which are usually not available in a preliminary design phase. Moreover, even if one had such information, it would be very hard to properly and promptly estimate their complex interaction and influence on the final outcome in terms of stability as well as to evaluate the effects of their possible change in a more advanced design phase. One of the aspects causing a great impact on assessment is the attention to be paid to the fire protection subdi-vision during the damages definition phase within the probabilistic approach.