When should stability calculations be performed?

Stability calculations should ideally be performed while the stowage plan is being made because this is the most critical time to ensure that the vessel will maintain adequate stability throughout its operations. At this stage, the arrangement of cargo, including its weight and distribution, can have a significant impact on the vessel's center of gravity and overall stability. By conducting these calculations early in the planning process, any necessary adjustments can be made to optimize the stowage plan for safe operations at sea.

Calculating stability after loading cargo does not allow for adjustments to be made to the stowage if issues are discovered during the calculations. Performing calculations during the voyage may provide useful information, but it does not allow for any preventative measures if the stability is found to be lacking. Finally, calculations before dry docking are important for structural integrity and maintenance planning but do not address the stability concerns that arise during cargo operations. Thus, stability calculations during the stowage plan creation phase are crucial for ensuring safety and compliance with stability criteria.