[quote=The New Yorker]
Did you say that it would take 30 years to get there? So characters would need to be older than 30 or they would be born on the ship.
[/quote]

Cryostasis chambers actually put your body in a sort of frozen state. You no longer age in Cryostasis. So your character would be as old as they were the day they stepped on the ship. :)