Reply #1 from GalCiv4 Forums Top

That GalCiv3 feature is not how GalCiv4 works.  Currently each Core world can only have its own shipyard., no additional sponsoring Core worlds.  Colonies cannot have shipyards nor can they sponsor Core world shipyards.  I don't know if there is any plan to change this mechanic.

Reply #2 from GalCiv4 Forums Top

I dissagree with you, once I had shipyard without any sponsors assigned and I accesed this screen where you can assign sponsors, but strangely there was no planets (core worlds) on the list, besides when you enter managment screen you can see sponsors list on the left and it looks like it will be possible to add more (why else to make it). Besides it is management mayhem...

Ashes of the Singularity II
Reply #3 from GalCiv4 Forums Top

Yes, there's also a tech that mentions lowering shipyard decay.

Reply #4 from GalCiv4 Forums Top

Quoting Kodi786675, reply 2

I dissagree with you, once I had shipyard without any sponsors assigned and I accesed this screen where you can assign sponsors, but strangely there was no planets (core worlds) on the list, besides when you enter managment screen you can see sponsors list on the left and it looks like it will be possible to add more (why else to make it). Besides it is management mayhem...
End of Kodi786675's quote

I'm pretty sure what you're referring to is the planets in the list of "in Area of effect".   It's an FYI only list.  The only way to add planets outside the base "Area of Effect" is to expand the "Area of Effect" with new technology or the Liberty Ideology - Mobility Rights (+2 starbase range).  Any planets that fall within the new range would automatically be added to the list.