I think I found the problem, I had Operation Monsun also included.
I tested it without Monsun and merchants start to run away OK
so, Monsun and RSRDC might not be compatible
Just in case someone want to repeat the test with both Monsun and RSRDC:
I) Mission: CapScurvy's manual targeting training mission, with automatic map update and camera
Mods enabled:
RFB_v1.52
RSRDC_RFBV15_V421
RSRDC_V421_Patch2
OpsMonsun_V705
OMv705_v710
-tanker at 11 knots, course 155, submerged (everything as per the training mission)
- surfaced the boat and 5 seconds later I started to see shells coming in my direction, so obviously the tanker detected me, crash dived and got into periscope depth
- then I measured bearing and speed at dead stop:
1st) course 245 ; 4 knots
2nd) course 285 ; 5 knots
3rd) course 205 ; 2 knots
It kept changing course, but I never see it coming back to anything over 5 knots
II) Mission: CapScurvy's manual targeting training mission, with automatic map update and camera
Mods enabled:
RFB_v1.52
RSRDC_RFBV15_V421
RSRDC_V421_Patch2
-tanker at 11 knots, course 155, submerged (everything as per the training mission)
- surfaced the boat and he didn't detect me. Fire shells at ~5 to 6 thousand yards,
- reduced distance to aprox 3K yards, kept shooting near misses, but avoided direct hits; still no reaction
- somewhere between 3K and 2K, I decided to hit it. At the first impact, I noticed a sudden change in course. so I stopped firing
- then I measured bearing and speed at dead stop:
1st) course 295 ; 9 knots
2nd) course 290 ; 9 knots
I stopped since it was obvious that it was trying to evade me at a good speed.
I am kind of disapointed by the low detection ability of the tanker, maybe that is a mission setting for a training mission? it should be able to detect me or the incoming shells at mid range. I will try to repeat it in a normal campaign