The current stability assessment model within the context of weather criteria has remained unchanged since
2008. The loading of bulk carriers in the Clarion-Clipperton Zone, due to its specific nature, requires a detailed
assessment that includes the impact of irregular waving during loading operations. Based on short-term predictions of roll motion during bulk carrier loading simulation, a stability evaluation is conducted according to
the standards outlined in the IS Code and by utilizing a modified weather criterion, where the author took into
account variable wave height and wave period. As a result, it was found that non-compliance with the existing
weather criterion under specific operational weather conditions is not observed. The modified weather criterion
illustrates the range of waves in which the b/a ratio increases and decreases, thereby indicating unfavorable
wave periods. The current model of the weather criterion (IS Code) for bulk carriers loaded in the Clarion-Clipperton Zone while in a dead ship condition is deemed sufficient.