I haven't coded it yet but I intend to add an option to "nationalise" civilian shipping. This will add all civilian shipping to your Empire but there will be a lower chance of civilian shipping appearing in the future. Every time you nationalise the chance will decrease further (I am thinking of halving the chance for each nationalisation).
Is it possible to have a button to
buy civilian shipping, not all of it but selected task groups and at a reasonable market cost? E.g. My empire is short of geo survey ships, the civs have built two or three which just hang around doing nothing and I would like to give them something constructive to do, but I am quite happy with the colony ships and don't want to interfere in their work. This would be much better than an all or nothing nationalisation button, which would reduce the chance of more free ships.
Regards