Tested my mission (small convoy+5 escorts) with IRAI.0.25 + all
ELITE units.
Great success! IRAI works perfect!!
At stock game DD do not react if merchant is attacked (escort do not detect my presence). With IRAI.0.25 4 of 5 DD start looping and detect me... and destroy my uboat.
3 DD are looking me at this same place (my uboat was detected by 4th...)
Convoy does not change bearing when escort ships detect my uboat when I was prepared to 'attack' (submerged hi-speed)
After my uboat's detection all closest DD (4of 5) attack my sub. I'm not sure that it is good, maybe two should looking for others uboats?
Torpedo detection idea.
Is possible to alarm convoy when torpedo is shot?
If DD can hear uboat, why cannot hear a torpedo with 30-45kt?
Convoy should be alarmed if torpedo is detected at water (and sub detection) - for me, DD should shoot white flares (FX mod) to put a light on surface, shoot alarm flare for convoy, and convoy should change the course about 45°...
Alarm flare - trailer SH2 (near 1:00)