IMO SECOND GENERATION INTACT STABILITY CRITERIA: APPLICATION TO A SET OF MEGA-YACHT PARENT HULLS IN A SHIP DESIGN PERSPECTIVE

At the IMO, the Second Generation Intact Stability criteria are currently under finalization and validation. This paper describes briefly the five different stability failure mode and the multi-layered structure which defines each vulnerability level. Furthermore, all first levels of vulnerability are applied to mega yacht unit, as such as the second levels are carried out for Parametric roll and Pure loss of stability. In order to understand how a design modification in terms of breadth may influence the susceptibility to this phenomena, a set of different models beside the original one are also investigated. Investigations are carried out by means of an “in house” computational tool developed at the University of Genoa. Results are mainly analysed in terms of KGmax curves, in order to detect the ship feasibility domain.