[2.1.5] AI Baffled by Mysterious Concept of "Boats"

[Galle]

I specifically observed this behavior with an adventurer in an observer game. He raised a very large host and a fleet capable of transporting them, but never attempted to board the ships and invade his target, instead just sitting in Britain dying of attrition:

 

[Chazzen01]

Had the same happen when I was helping defend the Byzantines when an adventurer decided to attack him. He just sat in some random provinces in Crimea, just waiting. His boats just sat out in water, he never did anything. I actually had forgotten about it until you made this post, as I was a bit busy with my own wars. -Chazzen

 

[mach13]

I saw this exact same behavior last night as King of Norway in an 867 start. Around 890 one of my vassals on the west coast of Norway (name escapes me) raised a host and then proceeded to sit in the middle of Norway getting killed by attrition while his fleet of 200 boats sat motionless in the water for about a decade until, probably unrelated, that saved game started having a CTD every few ingame days.

*edit* This was with the 2.1.5.5 patch, all DLC and no mods.

 

[treskies]

I noticed the Emir of Majorca exhibiting the same behavior in an observe game, also on 2.1.5. He had enough boats to move his troops from Majorca to the mainland, but he would just repeatedly raise the boats for a few days and then disband them in their ports.

 

[Servancour]

We are currently looking at some situations in which the AI is unable to use ships properly. I know this happens with adventurers for example, and they end up just sitting with their armies in a province.

 

[Mints]

This also happens to lots of norse raiders which causese them to go bankrupt, making scandinavia a criminal utopia: http://imgur.com/a/YQlp7

 

[Blood Royal]

This seems to still be an issue in 2.1.6, at least in my mod.

Can anyone confirm that it's like that in Vanilla CK II also, still?

Otherwise I need to figure out what files to update, to get the fix...

 

[Servancour]

This is not something we have patched as of yet. I think some changes was made recently and any potential fixes should be applied in a future patch.

 

[DarkReborn]

This also happens to lots of norse raiders which causese them to go bankrupt, making scandinavia a criminal utopia: http://imgur.com/a/YQlp7

I can confirm this also happens with characters whose religions can raid (with or without boats) in our mod. They just raise their levies, and even though they can raid a neighbouring province, they just leave them raised and go bankrupt.

 

[Negoveio]

Heya, happening to many adventurers on my games, different saves and everything. Here's a screenshot of one of those. It seems to happen with non-coastal provinces more than coastal ones. 2.1.6, Collection + ROI TOG SOA
fixed a minor derp

 

[NewbieOne]

Had a similar problem in a similar location in an earlier patch (Irish Sea/St. George's Channel).

Can it be that the AI is undecided (locked in ambivalence) because there are reasons to board and go somewhere but also reasons to stay and defend for the time being, so it stays inland but doesn't disband the ships (to keep them for later use without needing to raise them again)?