Play with the noise and wave factors in the sim.cfg. Tweak those enough and silent running wont help anymore.
If i remmeber correctly, noise factor default is 1. Loweriing it to 0.5 turns up the volume for the AI. Wave factor (again if i remember correctly) works in the opposite direction, default is 0.5. So a value of like 0.75 might make you easier to hear.
0.5 or 0.4 noise factor
0.6 or 0.75 wave factor,
im willing to bet will make the AI hear more in their hydrophones. If you want to go extreme try
0.3 noise factor and 0.8 wave factor and see how audible you are to the AI.