A ship is an instance of an Urbit computer that is a peer on the Arvo network.
A ship can be one of five classes:
- comets, disposable identities.
 - moons, connected devices subordinated to a ship.
 - planets, individual users.
 - stars, network infrastructure nodes.
 - galaxy, also network infrastructure nodes.
 
To be able to use the Arvo network, planets, stars, and galaxies must be combined with an Azimuth-based Urbit identity in the form of a keyfile.
Further Reading
- Install instructions: Guide to installing Urbit, which includes instructions on booting with your Urbit identity.
 - Ship Troubleshooting↗: General instructions on getting your ship to work, which includes network connectivity issues.
 - Urbit ID Overview↗
 - Pier: The directory containing a ship's state.