Peacetime/wartime difference.
Ie when was the first time Soviet crews were authorised to use self propelled imitators? How did it affect NATO ASW efforts?
The thing is, US never had a need to develop titanium hull construction, because requirements to dive extra deep (~1000m+ dive depth in case of Mike and various special purpose hulls) or to cut down on displacement (Alfas, Sierras, Kedr-T) were not there, nor was there MIC inertia to warrant further titanium manufacture (Kedr-T, to lesser extend Sierras).
Overall titanium's problem is not fatigue but it's price and how hard it is to use (machining, welding, etc).
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Grumpy as always.
Last edited by ikalugin; 07-18-17 at 06:30 PM.
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