I usually make papercraft models of video games, movies, etc., but this time I wanted to experiment a bit making this papercraft Royal Netherlands Navy Walrus-class submarine! ;o)
It's definitely not an exact replica, but the parts and instructions to build your own papercraft Royal Netherlands Navy Walrus-class submarine are on my papercraft webpage as always:
The parts (pages 1-5) are blank, to be printed on thicker (160-200 gsm) black/dark cardstock; pages 6-7 can be printed on cheap, regular printer paper to serve as templates to make the strengthening "ribs" and display stand out of thick, strong carton (note that depending on the thickness of the paper you use, you might need to make the ribs a tiny bit bigger or smaller for a *perfect* fit!)
The hull parts are big enough to use the "butt-joint" technique, to get a smooth hull without raised ridges that you normally get from overlapping parts; but other parts like the periscopes are *very* tiny, and are edge-glued on without glueing tabs at all (pretty tricky...! ;o)
Have fun building!