@ Kapizi Yes i know WoS already have IRAI_0_0_41 it's a good AI but...
@ sober thanks, WoS have many great changes in campaign but..
Let me show you guys what i mean if you have some time for a little test mission.
Try playing my simple mission called AI TEST MISSION.
http://www.filedropper.com/aitestmission
First try playing without HARD AI mod with Wos 1.5, I have include shallow water mod if you want to see where
is your sub for testing. Then load HARD AI mod it is a modified version of IRAI_0_0_29 and see the difference. (I have spent billion of hours on scripts for this mod

)
MissionBreifeing:
Try to escape the Tribal class destroyer
VeterancyLevel - Veteran
Doctrine - Aggressive
SecondaryEquipment - Middle
MainEquipment - Middle
TIP:
Try with flank speed just to bring his attention and use external camera with arcade steering just to see how smart he is. Then try to go 1 knot with silent speed or stop and he will stop circling around and will ping you and then attack. Or he will stop his engines and wait for you to surface or to fire up your engines.
Maybe it will look like its impossible to escape but its not.
I strongly recommend using WoS1.5 with this mod.
Good luck