Monsieur Aronnax and Captain Nemo were seated on a divan in the saloon smoking. The Captain Nemo showed M. Aronnax a sketch that gave the plan, section, and elevation of the Nautilus. Then he began his description in these words:

Here, M. Aronnax, are the several dimensions of the boat you are in. It...

Was Jules Verne's Nautilus based on a real submarine?