Fixing the navy with mods

After playing this game for like 10+ years I have finally learned how to mod it. Although shogun 2 is both polished and well put together, it still has a few issues, the main one for me is the navy. Specifically the fact that the AI spams ships like there is no tomorrow and sends them out on one ship raiding parties that don't actually pose a threat yet are super annoying. Overall the naval game doesn't feel like it is about scoring major victories in important battles but rather a war of attrition where you have to send your navy out to chase random single ships EVERY turn with managing ships and recruitment adding so much effort for little reward or interesting results.

To combat this I used my limited knowledge of modding to try 3 things: firstly I increased the recruitment cost of all ships by x3 and reduced their upkeep by 30%. I also added 2 turns to recruitment for all ships to reduce the amount of ships in circulation. I thought that maybe by making the ships more expensive the AI would value them more and not send single bow kobayas out to die alone. The result was not great, the extended recruitment time did have an impact but otherwise it was business as usual. (tested with otomo on very hard)

It seems the AI just loves sending out single ships and changing this is beyond my knowledge. If I could I would make the AI build up a big fleet before sending it out and stop CONSTANTLY recruiting any ship they can so that individual big naval battles could actually have an impact. Alas I think any minor changes I would make to AI behaviour would present other problems or unintended consequences. My next plan is to try reducing the amount of funds the AI puts towards the navy and keeping the recruitment time change.

I would be interested to see if anyone else has found a solution to this.

Lastly I would like to recommend some good mods I found:

This mod improves Naval auto resolve significantly to help delete single ships

https://steamcommunity.com/sharedfiles/filedetails/?id=3407913145

This mod fixes a major bug that almost prevents ships from sinking entirely (the mod make a Huge difference) btw this mod is included in the 2025 bug fix bundle mod

https://steamcommunity.com/sharedfiles/filedetails/?id=3577529538