I heard strong currents make loud noises if you hear from the sonar. No saying that NK subs are not noisy, but they seem to claim that currents make louder noise. Since I am not an expert, I invite any expert at FR on the matter to enlighten us.
36 posted on 04/03/2013 10:59:38 PM PDT by TigerLikesRooster
(The way to crush the bourgeois is to grind them between the millstones of taxation and inflation)