Well whatever we decide on, we probably need to focus on things that can't be replaced\converted into etc.<br/>So if there's no purpose built prison ship, a standard frieghter could be re-purposed to hold people if it became a problem. Biggest things to worry about would be food and fuel; agri-ships for the food but fuel needs both mining and refinery ships.<br/><br/>Same thing with the military, if there are enough weapons etc, then a garrison\police force could be trained but making new fighters is going to be a little bit more difficult