Could three after turrets form a superfiring stack?

Could a British capital ship place Q turret above X and Y in a three-level superfiring arrangement aft?

It was theoretically possible, but Britain was unlikely to accept the resulting hull stresses and pitching problems.

A tall concentration of heavy turrets involves more than fitting the guns into a profile. Their barbettes, magazines, and concentrated weight transmit large loads into the hull. Raising and clustering them aft could create structural discontinuities and worsen the ship's motion in a seaway. A period British design would therefore be more likely to use the conventional arrangement, even though the alternative can be drawn. Geometric possibility does not settle whether a naval architect would consider the ship operable.