How an 18-inch-gunned Furious could reshape naval treaties

What if Fisher had built Furious as a Renown-like battlecruiser with three twin 18-inch turrets?

Britain likely gains 18-inch-gunned Admirals as well, and the Washington treaty probably cannot settle on a 16-inch maximum.

The proposed Furious uses Renown's three-turret arrangement with twin 18-inch guns and a hull enlarged to carry them. That precedent is expected to push the Admiral class toward the same calibre. The imagined Hood would carry eight 18-inch guns, making comparison with a 16-inch Colorado much less comfortable for American negotiators. With at least two such British ships already in existence, a 16-inch ceiling at Washington becomes difficult to secure.