International Maritime Association of the Mediterranean (IMAM), Varna, Bulgaristan, 9 - 11 Eylül 2019, ss.25-32
The Second Generation Intact Stability Criteria (SGISC) are
developing since 2002 after a series of naval accidents, which clearly
demonstrated that actual stability criteria are not adequate to account for
significant changes in the design and operation characteristics of new commercial
ships. The philosophy is a multi-level approach in which successive levels
are less conservative and more accurate, arriving, if necessary, to the
Direct Assessment of stability failures. In this paper, Level 1 and 2 of the three main stability failure
modes of the SGISC: The Parametric Roll, Pure Loss of Stability and
Surf-riding/Broaching are studied on four naval ships the Systematic Series D
twoparent hulls, the ONRT, benchmark ship from research
version of the US Navy, and FREMM, a class of
multi-purpose French- Italian frigates. For every ship typology, when one was
found vulnerable to 2nd level, the corresponding criteria were analyzed by
navigation conditions to estimate operational limits. |