Many people are very surprised when they learn that Stowage Coordination is such a manual process. Over the years, there have been many attempts to develop "Stowage Optimization" software. So far, all have failed in their attempts to either create Automated Stowage Software or Decision Support Software.
Nevertheless, I have been involved in a number of these projects over the past 12 years and have co-authored 3 papers on the subject.
Personally, I believe that the industry is still very far away from having such tools. In the past (and current) attempts to generate such software applications, it has come down to two major flaws.