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I love reading about stuff like this! I had 2 questions perpetually on my mind: 1) The article doesn't go into physical sonic wave communication, like ultraso
by supernova87a 6y ago
I love reading about stuff like this!
I had 2 questions perpetually on my mind:
1) The article doesn't go into physical sonic wave communication, like ultrasonic I suppose. Did that ever have applications for submarine comms?
2) I always wonder whether like in the movies, submarines actually have or ever use the audible ping. Of course, it gives away one's position instantly, but does such a ping capability even exist still, on modern submarines?
- kevinskii 6y agoI was a sonar tech on a nuclear submarine 20 years ago. I don't recall hearing about any ultrasonic applications. As for the "audible ping": Yes, such a capability exists, and it is very much like the movies. It is rarely used for the reason you mentioned.
- drtillberg 6y agoRe: #2, that is active sonar, which is for useful for locating objects that are silent, e.g., rocks.[1] It also is very loud and disruptive for whales and dolphins.[2] [1] https://oceanservice.noaa.gov/facts/sonar.html https://oceanservice.noaa.gov/facts/sonar.html [2] https://skeptoid.com/episodes/4236 https://skeptoid.com/episodes/4236
- supernova87a 6y agoAh of course, the issue several years ago when the Navy's testing was causing whale / dolphin strandings...
- aoki 6y ago1) Yes, it’s nicknamed “Gertrude”. 2) Yes, every tactical platform that hunts subs has an active sonar capability of some kind. (Hull mounted, towed, dipping, sonobuoys, ...) When the ambient noise floor exceeds the target sub’s noise, you need that option.