for 30 years I was only colonizing solar system. It was more or less ok, since my civilian companies were only starting out. After I ran out of "perfect" worlds(Earth, Luna, Mars, Ganymede, Io, Europa, Callisto) I started to look for acceptable extrasolar planets. While I was surveying and building jumpgates my "7 colonies" were all set to "Stable".
No civilian passanger transportation were observed during this period. Luxury Liners were idling at spaceports. This is confirmed by absence of any tax income on Passanger Liners.
So my first question:
I thought that Luxury Liners would ferry rich citizens back and forth regardless of the immigration settings. Is it not true? Are they just mini-colonizers now? Or have I messed something up? Is it possible to get them working between established colonies?
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Once jumpgates were complete I contracted civilians to ship 100 Infrastructure from Mars to my first extrasolar colony, Cluntius Placidus-A II. I also set Mars to be "Source of Colonists" for a fairly short period.
Civ. freighters took the required ammount of Infrastructure and went for jumpgate. All civ. colonyships AND luxury liners took full load of colonists and were just sitting at Mars heading nowhere. My civilian lines are pretty rich. We are talking about 260 ships, of total tonnage: 10M tonns. A lot of them are colony ships, so...
After a while, once initial 100 Infrastructure was unloaded, ALL of civ. colonyships AND luxury liners decided to move people to their new home. And so they did: now I have 7.5M population on a planet with only 100 Infrastructure (supports 0.5M population). I can accept a "slight" overachievement, like shipping maybe 10% more colonists then required, but to miss 1500% is quite unnerving. What will happen after 30 more years, when civilian corporations will flourish from interstellar trade?
Hence my second question:
How to colonize right? Is there any way to ban some of the colony ships? Should I have contracted 10k Infrastructure in the initial shipment? How to create tiny colonies then?