yeah, it's sad.
Halifax harbour has a designated sonar unit to keep whales from entering the harbour I heard. From my old shipmates I heard tales of horror trying to sleep onboard when the frigate a jetty away goes PING>>>>>..... <<<<<<<.......
Worse are some "advanced" sonars.. Ping..BRIEIREUEUEEEe....
I'm glad I never went through that experience
