Well, it seems incompetent dimwits oddly didn't make any feasibility study to check the land is suitable or not before the construction of such factory, so it's not a suitable area to construct factory. Or it's just a lame excuse.
I am not an expert, I guess this would depend on the type of vessel. For example Sachsen class frigate has 2 ram system one in rear one in front and total 42 missiles.
Maybe it's better to have one Gokdeniz-ER and 1 Gokdeniz.