NSWSES in Port Hueneme was a guest of the Seabees. There was a huge repository of IBM aperture cards. An aperture card was a standard-size card with punch codes for the item description (identifier, classification level, ...) plus a frame of film with the actual drawing. When someone needed a drawing, for component or system verification, or to perform an update of some sort, a print of the drawing was requested, and after the security checks, ..., it was delivered to the requesting party.
We had a scanner that fed the punch data on a serial port and a scan of the image on a custom parallel data port. We took that in and fed it into a database, from which it could be printed, as before, displayed on a Sun workstation, and/or stored on large laser discs (data CDs being a infant technology at the time). The idea was to distribute the discs to the fleet (and other maintenance facilities, I suppose), along with the workstations, reducing the need for paper manuals. If you could look at some portion of the tech data data, for example for an AIM-9, you could either fix it, or schedule it for depot or disposition.
Made sense to us, and the engineering evaluation team from the Academy, but not the printing bureaucracy.
I doubt all of that paper made good ballast, but it was a lot of weight to put above the waterline, and the bulk would have been a better home for fuel and various ammunition.