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Originally Posted by Castout
What is the sonar signature of a completely stopping vessel like in LWAMI 3.08? As a vessel is at full stop they don't emit screw noise hence making the vessel stealthier than it is at 3 knots.
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Here's the catch to this one:
The primary frequency for screw noises is in the single digit Hertz range with higher frequency harmonics. That low a frequency sonar is not modelled in DW, which starts at 50Hz. I suspect the reason for that is that at that point, your predominant sources of noise are geologic in origin and poor Sonalysts doesn't want to have to model the tectonic plates scraping against each other and underwater volcanoes too.
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Besides this was what made Sub command loses some relism point in gameplay. And i got the feelin that this persists even after DW.
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Well... ya know... one should take a simulation for what it is. It is a simulation, not real life, and it has limitations. Depending on the depth of the water, once you get into the tens of Hz range, the origins of your transmission loss may be totally different from in the hundreds or thousands of Hz bands. The DEMON display is trying to capture of some the idea of blade rate and it does an adequate job I think. The thing is, if you wanted to really get down into the single Hz range and actually be accurate, you'd probably have to rewrite the sonar model for DW. It's not so simple as a database change.