Quote:
Originally Posted by denis_469
You not right. Depth limit was 700 meters or 2297 feet. Maximal speed was 41 knots. And subs was silence like Kilo submarine. What you write about noisy was special. In few orders submarine must very nisy so covert other submarines go. After receive order submarine 705 project go in depth few then 100 meters an start flank speed. Start very noisy and US SOSUS system can not detect other submarines with less noisy. But in normal Alfa subs was silence like Kilo class so use electric motors.
So it is submarines now so depth diving is secret.
Papa depth was 400 meters or 1312 feet.
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The 900m limit on the Alfa is varied many sources say 700m some say 900m some say 800m what is know is that they have been tracked and recorded at speeds of 42 knots by not only by the USN but also the RN and French navies, it was also confirmed by SOSUS in the 70's, as for thier loudness alot of western submariners and SOSUS operators will tell you they were very loud and it is a known fact revealed by Dr John Craven that an alfa coming off the North Cape at high speed was picked up at a SOSUS listening station in Bermuda.
The point with the Papa was to re enforce the notion that they have built multiple classes of titanium hulled submarines.
The Sierra class is very well known and documented to have the ability to dive to around 850 meters a lot of the depths were worked out by calculation (in the Project 705 case) but others like the Sierra the west have recorded their diving capabilities, the Sierra information that is current lists this not just in western sources but also Russian sources the Sierra is extremely well built.