ORIGINAL: Don Bowen
I'm interested in actual ships that were under construction when the war ended that (probably) would have been completed if the war continued to the end of 1946.
RN DDs: 8xCo, 8xCh, 4xCr (RCN), 16xBattle(1942), 16xBattle(1943/from 43 Estimates), 8xBattle(1943/from 44 Estimates), 2xStretched Battle(1943/from 44 Estimates), 2xBattle(1944)(RAN),20xWeapon, 8xG Some of these were in transit in the Pacific at close of hostilities, others hadn't even been laid down, and not all would have come to the Pacific, but the potential is there.
RN Escorts: a few Lochs and Bays made it through to the Far East, but the totals are 28xLoch, 26xBay planned to complete, and 54 more Lochs were cancelled that theoretically could have completed as either.
RN CLs: Minotaur class: Minotaur (as HMCS Ontario), Swiftsure, Superb - all complete, Hawke, Tiger, Blake, Defence, Bellerophon not launched by 1945, though at least some hulls were complete enough to launch.
RN BBs: Vanguard
RN CVLs: Colossus Class: Colossus, Glory, Venerable, and Vengeance, 11th Aircraft Carrier Squadron, en route at end of hostilities together with Pioneer (Maintenance Carrier), Ocean, Warrior, Theseus and Triumph, together with Perseus (Maintenance Carrier), due before end of '46 (only Theseus and Triumph yet to commission at close of hostilities).
Majestic Class: Majestic, Terrible, Magnificent, Hercules, Leviathan, Powerful, all launched, could potentially have been in commission by late '46.
Centaur Class: Centaur, Albion, Bulwark, Elephant, Monmouth, Polyphemus, Arrogant and Hermes. Laid down in 1944, might just be able to commission early ships before end of '46, '47 more likely.
RN CVs: Audacious Class: Africa, Irresistible, Audacious and Eagle. Somewhat speculative as to whether there is any chance to complete these in time, I'm not even sure Africa and Eagle had any significant construction done before cancellation in late 1945, Audacious launched early 1946 (as Eagle), Irresistible was delayed until 1950 (as Ark Royal), but may not have been far behind her.