russian SSBN's are not as quiet because there getting old but also because the russian navy says they spend along time in area that cover noise one can only guess this is the artic ocean well its obvious the typhoon was specificaly designed to oparate under ice.
the new borey class is roumerd to be quieter than ohio but no one knows as of yet.
the british SSBN's are even quieter than the ohio's they trail pump jet propulsors and stay at around 5 knots most of the time (ramius can you confirm this please).
the trfalgar are very quiet also as quiet as seawolf in some cases and the new astute is supposidly as quiet as virginia.
the le triomphant is noisey a tad noiseyer than the deltas (french SSBN tech is behind) so they relativly ewasy to track and the XIA of china is about as quiet as a november class of the 1960's
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