[walrus01]

Do you actually mean battleship, or frigate, corvette, aircraft carrier, etc? Battleships in the sense of the Iowa class and similar haven't been a thing in the US Navy for a very long time, unless you were working on blast damage/effect simulations in the 1980s when Reagan reactivated them for a short time.

[Joking_Phantom]

It seems likely that theoretical work would still be done on battleships, after we stopped using them in the real world.