Currently playing a Japan 1910 start and the year is 1932. Legendary difficulty. On version 1.6.0.6 with DIP. I've noticed that there are large sections of the campaign where the AI has very small fleets. As in most of the nations have ~20 ships total, with 1-3 capitals at most, and maybe 1/3 of the time no BB or BC at all. From about 1928-1932 the AI seems to have been improving in this regard, with some of the laggard nations increasing their fleet size.
Two nations have had fairly consistently large navies, 80-120 ships, for basically the entire 1920s. These are China and USA. Both have a reasonable mix of capitals and escorts, too.
I was wondering if anyone else has had similar issues? And also if anyone knows what determines these fleet sizes? The US and China have drastically different econ, with the US at ~400B in 1932, and China at ~130B, with China spending most of the past decade at -10% growth, and USA at modest positve single digit growth. France had a tiny fleet up until 1930, and in the past 2 years it improved a bit, but they have been at 400-900B with consistent growth for the last decade.
Wondering if this is happening because AI scrapping is a bit too aggressive, or if many of these nations keep losing ships at a high rate due to multiple wars at all times (the nations with good size fleets do seem to be the ones outside of Europe, that can maybe avoid tension and then mission generation more easily). And if the AI is losing too many ships, I was wondering if it tends to be bottlenecked on shipyard capacity, since funds shouldn't be an issue for eg, France. (They also had 200B funds in the bank)
If indeed, shipyard capacity is an issue for the AI to keep up on ships, I was thinking of making at least one low tonnage shared design for every capital hull of a particular nation to allow them to build more capitals.
Would the AI actually use these ships other than at the beginning of the campaign? If they don't have exactly all of the correct modules, does the AI just downgrade some and build the shared design, or will it just refuse to build it, and go back to trying to generate a design?