Aurora is on version 2.5.0 C#, available at the Aurora Forums.
Contact Erik on the forum for a wiki account.
C-Shipyards
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Shipyards in VB6 require one million workers as a base, plus 100 workers for each ton of capacity in naval shipyards and 10 workers for each ton of capacity in commercial shipyards.
For C#, the base requirement is removed. Instead, naval shipyards will require 250 workers for each ton of capacity and commercial shipyards will require 25 workers for each ton of capacity. This is intended to bring shipyards in line with other major industry sectors such as construction factories, mines and research facilities
As an example, here are the shipyards from my current test campaign with the old and new requirements:
http://www.pentarch.org/steve/Screenshots/SYWorkers.PNG
for changes in the shipyard-tasks see C-Shipyard Tasks