> For the complete documentation index, see [llms.txt](https://create-deep-seas.gitbook.io/create-deep-seas-wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://create-deep-seas.gitbook.io/create-deep-seas-wiki/deep-seas/mechanics.md).

# How it works

Most of what makes a submarine work happens behind the scenes. These pages explain the rules the game uses, with the real numbers, so you can build ships that do what you expect.

* [Sealed hulls](/create-deep-seas-wiki/deep-seas/mechanics/sealed-hulls.md): what counts as a sealed room, and what turns a ship into a submarine.
* [Water pressure](/create-deep-seas-wiki/deep-seas/mechanics/water-pressure.md): how deep each block can go, and the three pressure models.
* [Cracks, breaches and implosion](/create-deep-seas-wiki/deep-seas/mechanics/cracks-and-implosion.md): what happens past the limit, and the 120 m rule.
* [Diving and surfacing](/create-deep-seas-wiki/deep-seas/mechanics/diving-and-surfacing.md): ballast, lift and how the submarine stays level.
* [Oxygen](/create-deep-seas-wiki/deep-seas/mechanics/oxygen.md): making air and keeping the crew breathing.
* [Flooding](/create-deep-seas-wiki/deep-seas/mechanics/flooding.md): what the sea does once it gets in.
* [Pressure on divers](/create-deep-seas-wiki/deep-seas/mechanics/diver-pressure.md): how deep you can swim, with and without the diving suit.
* [Commands and config](/create-deep-seas-wiki/deep-seas/mechanics/commands-and-config.md): every command and the options worth knowing.