What if the Royal Navy completed all four Admiral-class battlecruisers?
Short answerTheir existence would likely push treaty limits toward 45,000 tons and make Washington negotiations substantially harder.
NotesFour operational 45,000-ton battlecruisers would be much harder for negotiators to treat as an exception than the single HMS Hood. A Washington settlement would therefore be pushed toward a higher tonnage ceiling while Britain still sought modern 16-inch-gunned capital ships. The result would complicate American efforts to contain the postwar capital-ship race.