so i have an idea for a space station with enough supplies to bring humans the Proxima b which is the nearest plant with a very high possibility of life. it would take an estimated 6,300 years to get there when going at the fastest speed possible for an aircraft with mass. but with the mass of the station needed to be very very large for cargo and technology to get the ship running and the engine for the big mass and food i think it would take around 15,000 years. to maintain ship power wihin deep space human labor can be used like he water cycle and wind turbines, although it would be very hard work although we would need the amount of humans for other thngs like maintince and others that people want to do more we can still use catilisum on the ship to maintainan order and offer much currency for the job. also to maintain supplies all currency and currency like thing will be digatal. wepons are a tough desicion for the fact that 15,00 years is enough to have insane people who wnat to go stabby stabby but of corse they would be useful to efend your slf aginst them so no fully automatics will be avalibleto civilian only slug ammo pistols that cant kill a person but can make you feel like you were shot with a real bullet. fully automatics wont be on board only semi automatic for high athourites to maintain order and law. i hit a road block at water let me know if you can think of a way to keep a water supliy for 15,000 years
If this topic interests you, I highly recommend looking at a Generation Ship or an O'neil Cylinder.