It would be a nice feature - similar to the Tech Tree(Research) where it lists what you just completed at the shipyard.
Doesn't have to be full graphic/splash screen, it can just be a line at the bottom of window (or anyplace else).
Reason being is if you are using the button you can't see what you just completed, so I have to exist shipyard, see what I completed, then go back in and start new project.