[p7p8]

I think this is wrong question and i will try to show you why.

Nuclear submarines are noiser at low speed than conventional but at higher speed they are quieter. Thats because nuclear subs are designed for going faster.

For example:
Which sub is noiser on screen below: LA or Kilo?



Some rules about noise

1) SSN > SSK at low speed
2) older sub > modern sub
3) SSBN > SSN > SSK (but Ohio class is very quiet in full spectrum of speed)

Of coures there are some exceptions (like Ohio)

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To what measure exactly?
No one here knows, or could disclose, obviously.

Its not true. I know which sub is noiser and how to measure noise level :P

Originally Posted by CrazyIvan (from RedRodgers forum)

All the noises for the table were taken directly from the game engine through the simulator kernel debugger, by measuring for each platform. At speeds from 0 to maximum speed.

As for "safe speeds", with the 688i boats you can stay "silent" up to roughly 8kts in literally dangerous waters. That is the speed I feel still safe enough when some contacts are >10nm out. Any closer, I go to 5kts, which seems to be the standard lurking speed. For transit in unknown waters, I do not exceed 15kts, and for transit when I assume the area is largely clear, I go as fast as the port (not starboard) towed array allows before washout.
I think that is around 25kts, and hence easy to remember (5, 15, 25).

I completly disagree with Nippelspanner (sorry Nip)
In my opinion NOT DETECTION but IDENTIFICATION is main problem. In DW all sub and surf units have first frequency 50 Hz or 60 Hz, so in reach enviroment and with heavy civilian traffic it gives you nothing!
Of course in isolated area, for example under ice, almost all contacts on NB are probably submarines.

Here you have detected fast moving LA from close range (number 15)



and here detected Kilo



Click on spoiler button

 

As you see, detected submarine could be very hard to identiffication!
(AI can identify your sub without any problems - it is cheating)

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In my opinion your speed should be determinated by:
1) situation
2) your own sonars washout

For LA Flt III
- 8 kts for Hull sonar
- 14 kts for Bow sonar
- 19 kts for TB-16 (port) Towed Array

For LA FLT II
- 6 kts Hull
- 12 kts Bow
- 19 kts for TB-16 (port) Towed Array

Akula I imp
- 6 kts Hull
- 8 kts Towed Array
- 13 kts Bow

All submarines have different values for washout Hull, Bow and TA sonars.

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Why i think your question is wrong? Let me ask you something:

In Silent hunter which submarine is the quietest?

Is it matter?



Good hunting Niume