Just wish we had a blueprint of the interior

Then I could get on with doing a 2D floorplan.
What would you expect to find surrounding a Hangar bay for example? Machine room, Storage, logisticians office, techpriest shrine, servitor closet (?)...
Not sure if would be useful or not, but you may want to check out the hanger deck of a terrestrial aircraft carrier for inspiration. Below is a link to the USS Hornet Museum, the has some excelent diagrams of the various decks of the vessel. I'm also including a second link from the Navy Matters website, which dicusses the Royal Navy's proposed "future carrier". Granted, it is meant for terrestrial oceans, but it article has a wealth of information and helpfull diagrams, that may help assist you effor to generate deck plans for the Venture.
USS HornetCarrier Strike Programe