[Taqwus]

Another use for base spaceyards is if you need an outpost on a tiny frontier world.

You can build a shipyard first, then have the shipyard build a shipyard base (or ship, if you need mobility at a higher maintenance cost), then scrap the planetary yard and build a resupply depot.

I wouldn't build an extra shipyard base just for the repair capabilities -- a much more efficient 3x3 base (Space Station w/ 3 Repair III) can repair 24 components per turn. A few of those at a mustering point can speed along a fleet refit quite well.

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-- The thing that goes bump in the night