Not sure how it works in OP, but in SFC3, at least for ships, there's the hit profile. That's written into the specs for the ship. It determines how easy or hard it is for you to get hit. If you take a ship with a small hit profile against a ship with a larger hit profile, the larger ship will have a harder time hitting the smaller ship, but the smaller ship will be able to hit the larger ship more often, but with weaker weapons. And F_W is correct, the planet size is hard coded into the game. The boundaries are unchangable. We were able to get working docks in SFC.