I think there are a few asteroid kinds that already have ice on them
Oh my goodness, how could I forget about that. And they're easy to find in large quantities too, courtesy of residing in outermost belts.
We need an organic factory to produce organic blocks to build an organic ship in the first place.
Why can't we grow them directly on ships? This would also double as part of the regeneration mechanic.
If you just mine asteroids and get resources exactly the same, that's kind of boring.
Oh that's only part of the scheme. You mine asteroids, turn water and rock into biomass through photosynthesis near star of appropriate spectrum, then you use said biomass, along with ores and crystals, to grow your ship.
This way organics would still need
some infrastructure to support ships, but at the same time this infrastructure could be mobile and allow migrating armadas with no set homebase.
How do we conceptualize Bobby AI biologicals?
Brain, a simple and elegant solution.
How do we conceptualize Fleet controls for biologicals?
Probably some kind of "telepathy" for the organics.
How do we conceptualize turrets for biologicals?
Well, first of all, forget about 360° turning turrets. In fact, with the way current system works, you might forget about turrets altogether. Organics don't exactly work like that.
Still, if you insist, we can look at it as symbiosis of two bioships. Still, no 360° turning.
Also, biological materials can in fact reach extreme strengths. Imagine a creature that grew a thick coat of a material similar to a thicker spider string. It'd be like wearing a Kevlar suit, all the time. Especially if the coat gets tangled and knotted.
Well, you could use excess biomass to "reinforce" the ship, constantly draining your supplies and adding more damage mitigation.
Now you got me thinking about space spiders and energy nets.