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Old 09-28-08, 05:06 AM   #24
geosub1978
Samurai Navy
 
Join Date: Oct 2006
Location: Salamis Base
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Quote:
Originally Posted by roadhogg
You mean the hydro sounds in SH3 differ from those in Dangerous waters wdg4587?

Are the hydro sounds in Dangerous Waters realistic?

And how do you know the hull doesn't work like a speaker and the steam cylinder engines are not much louder, on the basis of what geosub has said?

Engines create vibration, vibration creates sound, and given the size of the engines used in ships, and the effectiveness of water as a sound conductor....

No disrespect intended to geosub, and he obviously knows more about the dynamics of sonar than i do, but his comments suggest to me that to an extent, even he is guessing.
Or is he?
Certainly geosub has been ON a ship, but has he ever been UNDER one?

Has anyone actually heard the sonar sound of different ships received by a sub?

Anyone that has please step forward. And i mean that most sincerely
I know what I am saying! And believe me I have been below another ship. Thank God it wasn't just 10meters:rotfl: .

As for the flow noise, there is a level of distinction like that:

Warship/Merchant/Well maintained/new merchant/motorship/fishing boat.

Don't take for granted that because the flow noise of a 5000tn ship is diffrent that a 10000tn ship this will lead the sonarman to determine the displacment! He will identify a MERCHANT!
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