I happened to be re-reading some of the D20 books over the Weekend and there's quite a lot of overlooked lore among them. I'd forgotten about some of it. One bit that really stood out was the information from Starships of the Galaxy about SSD construction times, and I don't remember any of the debates or catalogues of known SSDs and their numbers ever really making use of it as an one of the few in-Universe data points about how many of those larger ships could have been built. To note, the book itself doesn't mention the Fondor yards that are known to have been able to build SSDs, nor any of the Byss and other Deep Core facilities that are also known to have been able to construct such large ships. Still, some of the "Asset Trackers" here with the lists of known SSDs might be able to make use of these hard numbers and do a bit of math towards some interesting conclusions. The book has numbers of shipyard construction slips for most of the other big yards in the Galaxy. Besides SSDs, we could use the above numbers and charts to make a serviceable estimate of the numbers of Mon-Cal warships.