PG can be used for really large models, actually look at Flight Sim 2020 where entire metro areas are modeled. You just need to take more photos, and the more photos, the better. As mentioned, modeling in Blender, Max, Maya, etc, is very different! A new ship is also going to hugely different then a wreck, you'll have regular shapes and easier textures/ materials for a new ship vs. the effects needed for much more irregular shapes of a wreck. As noted, I'd second using PG as reference material, then build a detailed model from there.