The population of a ship is the combination of civilians and crew members that reside on a ship, whether temporarily as part of a contract or permanently.
To survive, the population requires four things:
- an oxygen-rich, CO2-poor atmosphere
- 20 units of food each
- 4 units of water each
- the removal of sewage
The population will automatically use resources stored in tanks. When civilians die, crew members transport the bodies, and a cargo shuttle arrives to pick them up.