Lion and Princess Royal as carrier conversions

How would carrier conversions of Tiger and Lion compare with Courageous and Glorious?

Lion and Princess Royal would be the more likely pair. Their wider, deeper hulls and replacement boilers could make useful carriers, although unfinished Admiral-class hulls would be easier to convert.

Lion and Princess Royal are the likely pair if existing battlecruisers supply the conversion hulls, since Tiger would remain a battlecruiser. They start shorter and slower than Courageous, but their wider beam provides more room and their deeper draught allows a more stable built-up carrier. Replacing the machinery with small-tube boilers could produce a substantial speed increase. The finished ships could broadly resemble Courageous and Glorious in carrier performance while being better suited structurally to the role. Unfinished Admiral-class hulls remain the preferred alternative because conversion on the stocks would be easier. Courageous's existing small-tube boilers and Beatty's reluctance to abandon those ships help explain the historical choice.