I'm in the process of rendering a tanker (ship).
Still early progress'ish, but coming along quite nicely.
The materials were acquired from blender open material database
Only around 366 faces for this one, but only one problem.
It takes forever to render, so I doubt it's suitable for ingame use yet.
I'm going to try to bake it next.
First attempt, copy the mesh, unwrap and bake to selected.
Result: too dark
Second attempt: used a normal baking method this time, results are better this time, and I might actually be able to use it as an ingame passive prop now.