Quote:
Originally Posted by RussaX37
Nowdays submarines are not so much interesting as the old ones when you have to manage with everything and such a poor conditions for crew 
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Yes thatīs right. Because of the realy well sonar equipment we are not interested in "looking out" because we know allready who is around us. Type 212 passive sonar is able to detect the noise of propellers from coastal container feeder at ranges up to 100sm. Below 80sm the sonar is able to detect the lofar-noise of machine, gearbox, aux-engine. So why go up to peri-depth and look out, when we already know nearly all?