I open the Create Project Window. On the bottom row, I select Turret Design. I select the laser and number of them I want on the turret. I give it a company name because apparently, that is important sometimes. The only available button to hit at that point is 'Prototype'. I hit that and get the message:
"The prototype turret has been created and is available for class design. A shipyard cannot be retooled for a class design that contains a prototype component."
Ok, except there is NO such turret prototype available to me on the Class Design screen. Furthermore, even if there was, I wouldn't be able to build the ship because it contains a prototype component. No turret research options appear anywhere in any science research menus that I can see.
I've been tearing my hair out for hours trying to figure this out. Can anyone toss me a bone? How the Bleep do I actually put turrets on my ships?