eve online, just where you control a character, an actual walkable character
to log off, you dock your ship, your able to walk around the space station, single passenger crafts like fighters is what you start out with, but lets say you get a group, clan, coorp, whatever, it would take multiple people online at once to operate it, multiple gunneries, a pilot, a copilot
anyways back to real time, the ship never disapears, you can dock it in a secure station with police and security to prevent theft, or you can perform smugling and illegal activities, but have to dock ina less secure area, and some group with the right ammount of hacking skills or whatever could bust in while yoru walking the station or logged off and run off with your ship,
peices get placed on the ship, you dont just purchase one whole (although on the aftermarket you could sell your own ship you just built)