[grease monkey]

To start, as a first time poster, I'd like to say thanks for this wonderful concoction you've created in blue planet!
Anyway... I'm wondering if I were to step through a vishnan manipulated universe gate and arrive in the BP universe 300 years in the future (which could obviously happen at any time!), and started in this new reality by landing a job in taco mart at the local spacedock... what would I see?
Are ships built in a modular system, with individual sectioned warped in from various suppliers and bolted together? Or are they 3D Printed out as complete units? Is it labor intensive or would I be serving tacos to robots?
Being a few hundred years in the future with nearly unlimited energy available offers a while heap of different methods, and being an engineer by trade I need to be prepared!

[Phantom Hoover]

If they were 3D printed in one go it would be that much harder to carry out running repairs on them, and the modern GTVA puts a great emphasis on being able to keep its ships going with limited or unreliable logistical support. I'd expect a lot of modularity.

[crizza]

I think someone said that the Erebus was build modular, so the whole engine section can be replaced and so on.

[Rabid]

Modularity suggests dependency on fresh modules being shipped in from somewhere.

3d printing suggests a store of elements (harvested wherever and however), as well as a method to mix and mold them into usable shapes\structures\components.
I'd assume 3d printing supplied by gas mining would even be involved in the production of those replacement modules. 

Meanwhile I see minimalistic thruster/subspace drive/command cabin type transports attaching themselves to some of the larger modules, basically acting as subspace tugboats.