ABSTRACT
By the end of sub-committee on Ship Design and Construction session 4 (SDC 4) of International Maritime Organization (IMO), the development of 2nd Generation Intact Stability Criteria (SGISC) has achieved remarkable progress. This new criteria will be a mandatory requirement and replace the current 2008 Intact Stability Code after approval. Different from the hydrostatic criteria currently adopted in ship design process, the stability assessment of SGISC is based on hydrodynamic theory and covers four completely new failure modes of dynamic stability accidents. Thus, its application will exert remarkable influence on the future design process. In this work, sample calculations of Level 1 and Level 2 criteria with various types of ships are presented. Based on the vulnerability check calculations, the potential effect of SGISC on design process is analyzed, including relationship between vulnerability and ship type, as well as the effect of several ship parameters. Also, the effect of estimation method of roll moment of inertia and the potential application of CFD method are analyzed. The experience obtained from the development of SGISC will be helpful in reducing the designers’ difficulty when applying it, optimizing future design process, and improving the safety level of new design.
