Could Canadian Queen Elizabeths push the Colorados faster?

Would the Colorados remain 21-knot ships if Canada operated faster Queen Elizabeth-class battleships?

Congress might approve more powerful engines, but American infrastructure and dimensional limits would still constrain the result.

A nearby Commonwealth fleet of 25-knot battleships would sharpen the American comparison with the 21-knot Colorado class. Congress might fund larger machinery to reduce that disadvantage. American capital-ship dimensions and infrastructure still imposed their own ceilings. Foreign competition can change political willingness to spend, but it cannot instantly remove physical construction limits.