Are hull expansion and plane hydraulic noise modeled?

[TedwinV]

I read on reddit's /r/coldwaters that transients from angling dive planes and from the expansion and contraction of the hull when rapidly changing depth actually generate noise in-game and can lead to your being counter-detected. Is this true? If so, how do you minimize it? I'm wondering if this is why I seem to be counter-detected by certain surface ships and submarines in the 1984 campaign within minutes of starting a mission game regardless of how far away I start or how fast I am going, even on casual difficulty.