Medium size can dock Sub-Capitals, Orca, Bowhead, Freighters, but has no operational tubes.
Large size can dock all small . Sub-Capital ships, Capitals built here can not dock again once undocked, 3 operational fighter tubes
XLarge can dock all small ship & capitals. Supercapitals can be built here but not dock, once undocked, 5 operational fighter tubes
Medium size can dock Sub-Capitals, Orca, Bowhead, Freighters, it has 3 operational fighter tubes
Large size can dock all small and Capitals ships, it has 5 operational fighter tubes
XL size can dock Super Capital ships and has 5 operational fighter tubes,
Medium size can dock Sub-Capitals, Orca, Bowhead, and Freighters, it has no operational fighter tubes
This is the startup refinery for new station owners.
Large size can dock Sub-Capitals, plus Rorquals. You can built Capital ship, but once they leave no Capital Ships can redock. It has 4 operational fighter tubes: 3 Support, 3 Light
This is the startup refinery for more advance station owners.