Quote:
Originally Posted by Kapitan
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.
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About Alfa you need understand that 700 meters is safe depth, but 900 meters is crush depth. About speed - all may be. During WWII one German submarine type VIIC write, that in Gibraltar transfer was speed 11 knots. So may be and 42 knots.