I have been looking about to figure out our likes & dislikes in a potential liveaboard. I hadn't looked at the Catalina's until I came across this thread. I think I am going to take a look at a couple for sale over in Seattle. From the pictures I have seen online they look like a comfortable & efficient layout for a 36.
If the urge struck me to cross oceans, and maybe even consider circumnavigation, is the Catalina a poor choice?
If you look at the Cat 36, also look at the Cat 34 as well. Interior space isn't that much different and it has a completely different layout that suits some people better than the 36.
Circumnavigating with a Catalina? It's a nice boat but isn't built for bluewater sailing. Not to say a properly re-fitted Catalina can't do it, but if you want to do bluewater sailing, get a boat that was designed from the keel up for that purpose.