Periodically, towards the end of its run, there would be detailed articles in the Star Trek Communicator magazines concentrating on specific ship classes. It's been forever since I've seen any of those articles, but IIRC they were quite well illustrated and offered schematics and multiviews. I remember that the article dealing with the Nebula-class in particular was well done. This might be more of a question for Trek Lit, but I offer it to you starship fans in Trek Tech...is there somewhere online where you can view or acquire PDFs of those articles?