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Old 05-07-2019, 12:43 PM   #1
MadMike
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Default Declassified Soviet Sound Signatures

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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Old 05-08-2019, 04:28 AM   #2
Kazuaki Shimazaki II
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So basically, the Victors are quiet in the audible band, but not quiet in the infrasonic sections?
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Old 05-08-2019, 04:14 PM   #3
Sub187
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A link to the documents?
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