In 1:700th scale -- I'm not sure that an example of Jules Verne's Nautilus exists.
Crown made a couple of versions of the Disney Nautilus, the smallest was around 1:350 or so. These kits are OOP and expensive if you can find one.
Wilco Models makes a resin 1:192-ish Disney-type Nautilus (different enough to avoid the lawyers). It is a dog of a kit with bubbles everywhere. I wouldn't wish it on an enemy.
There are some other high-end Disney Nautilus kits, mostly resin & fiberglass. Larger scale and larger bux.
Revell made a Nautilus as a tie-in for an animated movie about a dozen years ago. It was a Snap-Tight and was really just a toy.