Could you win the campaign while building only a historically accurate fleet?
Short answerPossibly, but the rules would need to include ships actually ordered or cancelled by treaty because the game models theoretical possibilities without reproducing every historical political and strategic constraint.
NotesThe challenge is possible enough to attempt, although historical accuracy needs a careful rule. Ultimate Admiral: Dreadnoughts permits ships based on technical possibility, while real fleets were constrained by politics, strategy, and naval treaties. A rule based only on completed ships would exclude genuine procurement decisions that were later reversed. One workable approach would allow vessels that were actually ordered, including designs stopped by treaty, instead of limiting the player to ships completed in reality.