How did I not know this was a thing?
Looks interesting for those folks in the SF Bay Area.
I can only imagine that there are lots of unique challenges that come from trying to host an event like this on a warship, even if its now a museum. The narrow corridors and steep stairs combined with what looks to be a big focus on cosplay might prove challenging. That being said, if you are doing a military-style cosplay, that could be an excellent place to stage some photos.
This is actually local to me, but I hate going to anime conventions these days because nobody wants to watch anime together.
If you have any general non for profit conventions around they at least used to have a standard 24hour movie room and 24hour anime room. Near me one of the rooms would do godzilla for the wee hours.