One further note on this design....especially if you have seen the movie, "league of extrordianary gentlemen". Read the Verne classic, "Mysterious island". It goes into Captain Nemos history far more than Vernes original or for that matter Disneys classic. The league movie accurately shows and perpetuates the story line of captain Nemo being of Indian descent, a prince as a matter of fact, something that the "Mysterious Island" goes into great detail about. The Mysterious Islands illustrations, of which only one show the nautilus, shows it also as verne described and as Mr. Ron Miller has further researched and developed, later designed and built as a paper model by heinkel models. Unfortunately, or fortunately if this concept excites you...the League folks created an "Extraordinary" model to coincide with a extraordinary plot line! All very interesting if Verne is your thing, like myself!