The RN needed to order a Malta like carrier instead of the Audacious class.
Building 2 to 3 Maltas between 1945 and 1960 would have given the RN a carrier similar to Midway
Experience with the Maltas would have allowed a less radical CVA01 design to be laid down in the 60s and 70s.
F4J and Bucs operate from these ships until replaced by F18s.
Building 2 or 3 Maltas between 1945 and 1960 wouldn't happen unless they were laid down 1942-44 instead of the Audacious class. I don't know whether that could have been done, but it does give you 2 or 3 ships that (according to Conway's 1922-46) were 100 feet longer, 3 feet beamier, had 4 lifts instead of 2, a third more shaft horsepower and the same size crew.
So far so good. Except (all other things being equal) it gives you:
- One Standard D Malta with DC electrics instead of Eagle.
- One Standard C Malta with DC electrics instead of Ark Royal and unless the shipyard preserves her hull better than it did IOTL with all of Real-Ark Royal's material defects.
- One Standard A Malta with AC electrics instead of the rebuilt Victorious.
Although the hulls are longer my guess is that ALT-Ark Royal still received a pair of 151ft stroke BS.4s. My guess is that the ALT-third ship would have a pair of 151ft stroke BS.4s, which while an improvement on the 145ft stroke BS.4s that Victorious, the Real-third ship would have been completed with 151ft stroke BS.4s too. Neither ship would have been completed with arrester gear capable of handling a Phantom either.
Therefore, ALT-Ark Royal would have required a Phantomisation refit like the one that the real Ark Royal had 1967-70 IOTL (BS.5 steam catapults, new arrester gear and a fully-angled flight deck). Except the longer hull may have allowed longer stroke BS.5 steam catapults to be fitted.
The ALT-third ship would have required a Phantomisation refit along the lines of Ark Royal too. The main difference being that she already had a fully-angled flight deck. Whether that happened ITTL would depend if it was due to start before or after the devaluation of Sterling. If it had been completed before, then it's a non-issue. If it was in progress (as Ark Royal's was IOTL) then the Government would have allowed it to be completed. If it hadn't been started then it would have been cancelled.
ALT-Eagle would have needed a Standard A refit, which like the real one would have gone over time and cost despite keeping the DC electrical system. However, like her sisters the longer hull may allow longer-stroke BS.5 catapults to be fitted. She would still need another refit to enable her to operate Phantoms, which all other things being equal would have been cancelled following the devaluation of Sterling and still run aground.
I doubt that they would have had Midway-size air groups, because that would have required larger crews and a much bigger logistics & training organisation ashore to support them. They probably would have had air groups that were not much larger than the OTL Ark Royal & Eagle or at best CVA.01-size air groups.
I don't see why experience with these ships would have allowed a less radical CVA.01 to be laid down in the 1960s and 1970s.
I like the idea of them being in service long enough to have their Phantoms & Buccaneers replaced by Hornets. Unfortunately, given that the OTL grounding of Real-Eagle probably happens to ALT-Eagle and ALT-Ark Royal probably had Real-Ark Royal's defects it looks like only the ALT-third ship would be able to stay in service for long enough to operate Hornets. (Midway only served for as long as she did because of her SCB.101 refit in the second half of the 1960s which IIRC took twice as long as estimated and cost 2½ times more than estimated.) And Phantoms and Buccaneers could have operated from the Audacious class until replaced by Hornets too if Eagle hadn't run aground and Ark Royal's defects were avoided.
The RN needed to order a Malta like carrier instead of the Audacious class.
Building 2 to 3 Maltas between 1945 and 1960 would have given the RN a carrier similar to Midway
Experience with the Maltas would have allowed a less radical CVA01 design to be laid down in the 60s and 70s.
F4J and Bucs operate from these ships until replaced by F18s.
The other way to do it is abandon plans to modernise the Illustrious class in favour of new construction in the late 1940s instead of the early the early 1950s. Then you get some 1952 Carriers built in the 1950s. As someone else wrote one instead of rebuilding Victorious and maybe another instead of completing Hermes. However, a minimum of 3 ships would have been better. Compared to the Maltas (and Audaciouses) they would have had have modern torpedo defence systems, AC electrics and better accommodation for the crew.
However, it's unlikely that they'd have been built with steam catapults and arrester gear that could launch and recover Phantoms. (IIRC from Friedman they were to have been fitted with two or three 151ft stroke BS.4s.) If that's correct, more powerful catapults and stronger arrester gear would have to be fitted to make them Phantom-capable. On the other hand the work aught to have been less drastic than was required for Ark Royal IOTL (e.g. they would have been completed with fully-angled flight decks) and due to the ships being larger longer stroke BS.5s could have been fitted.
I don't see why experience with them would have allowed a less radical CVA.01 design to be laid down in the 1960s and 1970s either. Although two or three 1952 Carriers wouldn't need replacing until at least the late 1970s and were more likely than two or three Maltas to survive for long enough to see their Phantoms and Buccaneers replaced by Hornets.
Edit 07.01.25
I've checked my copies of Brown & Freidman. The short answer is that 1952 Aircraft Carriers would have been built with steam catapults and arrester gear that could have launched and recovered Phantoms along with flight and hangar decks that were strong enough for them.