SLD
Contributor
Trust an expert in submarine sonar. You can’t go fast without making significant noise. It might be very quiet below certain speeds, but nothing is quiet above 25 knots. And you can’t hear shit either. The sea itself will create the noise around you.So you disagree with actual experts.And note that running quiet at high speed isn't really something that will happen
And the risk of cavitation is also significant. The faster you can go, the lighter you are. That means less depth. And less depth means a greater risk of cavitation. You have to know where that cavitation curve is.
And no matter how quiet you are, you’re always vulnerable to active sonar from air assets that you can’t shoot.