| Just the one colony ship that you start with. After that, it's all my own designs. I just click the "user" tab so that the core ships don't even show up in the lists. |
I always click the "user" tab and ignore the core ships. Even at game start, before I have researched engines and life support I can make a faster colony ship (using multiple engines) with better range (using multiple basic life support) than the core colony ship. All the core ships have poor speed and range!
As smjjames said the core ships will clutter up the shipyard governor so it is probably best to obsolete them as they appear. Some of them are cool to look at (i.e., the core colony ship looks better than my no-nonsense colony ships) but otherwise, are awfull!