What if HMS Dreadnought became the Second World War HMS Prince of Wales when it was launched?
Short answerIt would dominate every contemporary capital ship and provoke a much more extreme arms race in speed, fire control, displacement, and gun caliber.
NotesThe transformed Dreadnought would raise the battleship benchmark from 21 knots to 28 knots and introduce ten 14-inch guns with radar. Its 5.25-inch secondary guns would also attract interest as a new cruiser armament. British manufacturers could study equipment far ahead of contemporary designs. Once 14-inch guns became the starting point, further competition might move to 15.5-inch, 16-inch, or even 16.5-inch weapons. The scenario therefore changes the pace and scale of the battleship race immediately.