05-22-20, 06:15 PM
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#5
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Captain of the Nautilus
Join Date: Mar 2005
Posts: 142
Downloads: 223
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Quote:
Originally Posted by MadMike
A certain three letter agency has declassified sound signatures for a wide range of Soviet submarines. Original date of the document is 1969.
Operating levels considered "quiet" were 30-35 decibels in the low frequency band, and 20-25 db in the sonar band.
For the Victor class, these levels were-
Low freq, at 5 knots- 55-60db. At 14 knots- 65db
Sonar band, at 5 knots- 16db. At 14 knots- 22 db.
Yours, Mike
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Link to document?
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