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Seawolf is much quieter than an LA class boat, and Virginia, although not carrying as much armament and not being as fast (although reportedly the Virginias have turned out to be significantly faster than expected), at least match the Seawolf in quietness. Of greater significance that the absolutely highest level of quietness is their tactical or "quiet" sped. That's the highest speed at which they can operate and still be below the level of detectability by competitive subs. For most subs, that's something around 3-5 knots. On these two classes, the open literature suggests it's above 20 knots. That's amazing, but remember, these boats cost a lot of money!
Seawolf is much quieter than an LA class boat, and Virginia, although not carrying as much armament and not being as fast (although reportedly the Virginias have turned out to be significantly faster than expected), at least match the Seawolf in quietness. Of greater significance that the absolutely highest level of quietness is their tactical or "quiet" sped. That's the highest speed at which they can operate and still be below the level of detectability by competitive subs. For most subs, that's something around 3-5 knots. On these two classes, the open literature suggests it's above 20 knots.
That's amazing, but remember, these boats cost a lot of money!
