Back to doing some more 3D modeling: cargo ship design process

Hi, It's been a while since I've done some stuff.
I'm modeling a cargo ship and going through it stage by stage.
(Actually, I'm more focussed on making modular components that can be combined into more designs. May or may not be game design related, still thinking about that :p )
To start off: here's the basic layout for the design:

Now for the refining process, let's start off with the core block first.

Next up, the cargo blocks have been reworked for the V2.

It's been a while since I last updated yet again.
Cockpit area and engine block added. Time to add some point defense guns in case it needs to handle some floating debris.

Added a pair of railguns, but for now, the thing still looks a bit boring, right? Time to add some textures

After some fiddling around with the materials, here's what I got

... Probably going to rework that soon, but for now, I'm going to experiment with the modules I've done so far.

Gunship variant:

Well, you can't really make up anything out of these screenshots...

How to highlight the edges in blender: Under render options - Post Processing - Edge