Try this single mission, and see the difference in an attack the "wolfpack":
http://yadi.sk/d/J88ZQ_CT7Lbzz
After contact with the convoy to all stop engines and observe the actions of AI-submarines with an external camera.
You can use the time compression.
a) First time use the original file Sub.aix of IRAI_37-39 or my from post 2101.
b) The second time, use the attached file Sub.aix. I recommend to disable the firing of the deck guns or use a file attached Ship-Weapons.aix. Do not forget backup files.
Files sensorvisualsub.sim and NSS_Uboat7b_AI.sns applied for compatibility. Do not forget backup files.
If in the AI-submarine work hydrophone and periscope sensors...

In the AI-submarines no soundman.