SubWorld/Ark Ships

Ark Ships are large spacecraft that are used to transport passengers between the inhabited planets of Earth, Mars and Venus. First built on order of the Colonisation Initiative put forward by the Commonwealth in 2049, on their first journeys in the early 2070's the ships carried terraforming equipment, building materials, first passengers and workmen onboard, however following the initial colonisation and terraforming they are now used for emigrating passengers and cargo.

The Ark Ships are the only civilian spacecraft in use, with personal space travel long from possibility the Ark ships are the only way of travelling off world or between planets, and as a result regular flights are scheduled between worlds from ArkPorts. Most of the spacecraft are operated by the Commonwealth, and people can book places for passengers and cargo on the scheduled flights.