Which ship design should be brought forward by twenty years?
Short answerNelson and Rodney, because appearing alongside Dreadnought would create an extraordinary naval-design shock.
NotesMoving Nelson and Rodney back twenty years would place their concentrated 16-inch battery near HMS Dreadnought's debut. Their all-forward layout would look radically different from the new dreadnought standard. Major navies would have to reassess firepower, protection, and turret arrangement at the start of the race. The answer chooses design disruption rather than simply transferring the most powerful later ship.