Hello again, concerning sonar, Alfa has squid arm sensor, Victor I and II have shark teeth sensor. They have same sensitivity for passive and active. If they work on Victor I they will work same on Alfa. Plus in campaign mod version 1.03a (latest) Alfa is as noisy as Victor II. As I said earlier, I'm working to merge the campaign mod with russian playable mod. There I'm adding a few more torps like 53-65M (wake homing, but in game I'm modeling as passive only although with higher sensitivity than set65) and 65-73 heavy torpedo.
Just finished a mission in 1968 with a Victor I where I intercepted a convoy bound for Trondheim. Killed both escorts with set65 and killed 3 merchants with other torpedoes. Many torpedoes missed (set65 sensor has 800 meters range, so you have to shoot accurately, with a TMA confidence over 70% if you want to make every shot count). Also consider that set-65 has not great range (17000 meters more or less). Much better test-71 with 27000 meters range.
All in all, I suppose soviet submarines are much more challeging as they are modeled with inferior sensors and more noise (especially earlier classes), but they are not impossible.
By the way, to make things a bit easier, in merged release I've increased the minimum distance at which ships and planes will spawn. This way I'm reasonably sure that you won't be blown out of the water due to helicopter dropping on your head in the first minute of the engagement.
Cheers,
Aaken
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