Hi, this is my first week playing this game and I'm lovin it but I can't figure out why my grav and geo survey ships cant be built at the same shipyard when they have the same BP and are identical in every way except for the sensors. Am I missing something here?
The fact that the two have the same total cost doesn't mean that you can build both at the same shipyard. What is important is the refit cost of going from one to the other, if that is more than 20% of the cost of the ship that the yard is tooled for you won't be able to build it there. If the geo/grav survey is a big component of the cost of your ship, it is easy for it to exceed that limit.