When I am in a Kilo, raise the snorkel and start both diesel engines the boat will speed up to 50knots in 4 seconds then the snorkel breaks.
The problem exist only in Russian Kilo (pr.877)
all other variants not affected by this bug.
I am bit curios in the other kilos when I give order for 5 knots, and start one diesel the speed drop to 4 knots, when I start the other diesel and both diesel are running the boat reach 7 knots and get the message to retract all mast and antennas.
I have test mission included so you can see yourself.