[V.109 build 1825.18] Nuclear submarine dB bug (?)

[CmdrYvanTrovosky]

There's this bug (?) regarding nuclear powered submarines, suddenly becoming quieter (around 20~ dB). Here's a comparison between a two subs at 5 knots - a cold-war design Valiant class (120.00 dB at passive VLF upfront according to the Database) compared to contemporary Type 039C Yuan class (95.00 dB at passive VLF upfront according to the Database)

I was wondering if this was intentional, or is a bug. Thanks!

(I apologise but I couldn't get to attach the scenario file)

[Blast33]

An advice is to look at the changelog of the last update..?

ADDED: Effects of natural coolant circulation on nuclear-powered submarines (signaled via the submarine flag "Advanced Propulsor"):
1) Natural-circulation completely negates the "nuclear boats make some noise even when sitting still, due to reactor circulation" clause, at low speeds.
2) At up to 10 knots shaft speed, natural circulation shaves off 8 decibels from the emitted powerplant noise. At between 10 and 15 knots shaft speed, the benefit is 4 decibels.

https://forums.matrixgames.com/viewtopi ... 2#p5270942

[Eagle2046]

Hello CmdrYvanTrovosky, where did you get v 109 build 1825.18 ? The latest update I have is 109 Build 1825.15. I checked Matrix MY PAGE and it shows only 109 Build 1825.15, I didn't see update 109 Build 2825.18. Thanks.

[CmdrYvanTrovosky]

It was a typo, sorry.

[Eagle2046]

No need to apologize, it happens. Thanks your response.