You mean the pop up menu with the visible TDC when pressing "T"? No, I don't think it has any functionality EXCEPT allowing you to set the spread of your salvoes and of course seeing the target data -distance, course, etc.- to judge if the shot is worth it. May be the devs had thought about adding a manual TDC and the lack of time or the poor graphics of that time made it a lesser priority. Who knows...
