Does damage affect ai ships or submarines
 

Hi all I want to ask. If we damage ai ships or submarines, Will it affect their performance? Such as broken radar/broken sonar/lower flank speed/worse maneuverability/noisier at same speed?

The AI will take damage but its tough to know what kind of damage.
Mostly, you'll notice the platform slow down.

Not really equipment wise just take on water and sink if damaged enough, and visual effects fire smoke sometimes hull damage but not always. Most Sinking ships will send out SOS's and pop flares. I've pursued ships for ages with the stern well tipped downwards and still maintaining full speed at times.