I don't know. We did not have these lines on the flight deck in my day. They may be reference points for aircraft directors. I'm not sure.
Yes I have a grandson, poopeye, serving aboard Nimitz. Nimitz is at sea and it would be nearly impossible to contact him while they are underway.(OPSEC=Operational Security) He is an Operations Specialist(radar tech). He works in CIC(Combat Information Center) I doubt if he knows what those lines are for. When I can I will ask him.It is exactly like that. The lines are new. That's why I'm asking. Isn't a family member of yours serving on an aircraft carrier so you could ask when the opportunity arises?