Colony ships

A colony ship is a starship that carries large populations of colonists to potentially habitable planets. At some point in Earth's history, a large amount of colony ships were launched, in hope of spreading humanity beyond their homeworld. Two famous colony ships were the Rodina and the Bradford.

Description
Most colony ships are very large, sometimes possessing their own government, economy, and culture. They would also often carry a population ranging in the millions. Like all large starships, they are separated into decks and levels. Many colony ships carry algae vats for food purposes, and terraforming equipment. Due to the length of the journey, it often took generations for a colony ship to reach its destination. They also possessed advanced limnal drives.