The video above pretty much says it all. But, here is a list of must. Must be able to refuel, have things dock with it, and transfer fuel. (Check the video) Must hold at least 200 people, but I prefer 600. Must have moving doors (air locks), maybe rooms, and so on. Must be hollow. (Also must have something marking where things are. Like lines or writing. The people must be able to get in their mission ships to and from the inside of the mother ship. If it's not possible, then maybe an air lock or maybe the mother ship opens up somewhere. Must be able to hold a massive amount of landing ships, rovers, and so on. (I will send rovers to some places to check out the land. These rovers may or may not come back) Must be able to move massive things. See the video for ring that I'm going to put around the system. The ship must have an active communications department, cockpit, living area, engineering room, engine room, and so on. Things I would like to have in it. I would like to have escape pods in it for most of the people. I would like to have it spinning at all times when everything is put on it. This should create 1 G in the ship. So ladders are a must at this point. (If the ship spins then we need to find a way to tether the people to the ship. That away they don't fly off to no where.) I would like to have it have defense lasers. I would like it if the inside had air in it. I'm thinking the best way we can do this is by doing 1 area at a time. We can start with the cockpit. You obviously may use mods, but you must list them when you upload them on here. UPDATE