In the undersea world, the Nautilus is a cephalopod famous for its distinctive, curved,
chambered shell… the Nautilus is also the name of the submarine commanded by Capt.
Nemo in Jules Verne’s science-fiction classic “20,000 Leagues Under The Sea”… the real
USS Nautilus was the first nuclear-powered submarine in history… Nautilus is also a well-
known brand of treadmills, elipticals, and training equipment… finally, and more to the
point here, Nautilus is the name of several casinos in Africa, Russia & eastern Europe…

[Scans 5 & 6 from the ChipGuide]