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Hydrophone, usually. It's sort of like a radio.
Radio frequencies don't work under water, so voice frequency is raised to an much higher frequency. Even if you heard it you could make sense of it, so the receiver breaks it back down to voice frequency. People sound a little funny, but can be understood.
I was trained to use underwater hydrophones. Sound travels well underwater, but not all frequencies of our audio band. Some phonics get distorted.
Generally you pause after each word, as sometimes there will be an echo that walks on the next word.
While submerged on the AUTEC range we may communicate with the range safety officer via hydrophones to coordinate when we can fire at the next surface target.
Feel sick thinking about these souls...Have they put down the cameras used when they were looking for Titanic..I dont understand all this but pray they all get saved..
Did anyone notice the earlier post, where an article was linked to a prior incident with the same submersible, where there were technical difficulties? I wonder how reliable that vehicle was after that. Was the company relying on a vehicle that had issues, simply because they'd already invested so much money in it, and needed to continue doing "tours" to recoup their investment and make a profit?
Two part mini-documentary by the BBC on the company/submersible - the second video features video of another journey they took where they start having problems with the thrusters while down on the bottom of the sea. It gives you a terrifying taste of what they might be going through at this very minute.
BBC took down these videos. I bet CEO called them wanted them pulled due to pending lawsuits will be coming. Censorship all these big media companies is typical.
I was trained to use underwater hydrophones. Sound travels well underwater, but not all frequencies of our audio band. Some phonics get distorted.
Generally you pause after each word, as sometimes there will be an echo that walks on the next word.
While submerged on the AUTEC range we may communicate with the range safety officer via hydrophones to coordinate when we can fire at the next surface target.
I'd think that if the sub had sudden decompression, if there were any USN subs in the area they may have heard the blast? But it's a big ocean and I'm not sure how far away something like that might be heard.
I'd think that if the sub had sudden decompression, if there were any USN subs in the area they may have heard the blast? But it's a big ocean and I'm not sure how far away something like that might be heard.
I have been following this on the news. It's So sad. I hope they find them alive.
This doesn't look too hopeful though.
(I am claustrophobic, just thinking about being on that submersible and what it must be like, is alone enough to make me want to throw up.)
Last edited by Crazee Cat Lady; 06-20-2023 at 11:40 AM..
There is a timeline of events:
4AM - sub is launched
5:45 - contact is lost
11:30 - Final Ping. The sub automatically sends a ping every 15 minutes. So it pinged for about 5 hours.
After that, it was a matter of announcing the loss and soliciting help.
It may never be found. They are looking for a 22 foot object in nearly complete darkness and have to search from close to surface - 12,000 feet away.
Took them long enough to find Titanic, which was huge.
I wonder what the difference is between losing contact and losing the pings? So, the sub was pinging from 5:45 to 11:30 but the crew was not communicating? That should be a red flag. They waited until 9:30 PM to call for help. If the sub did implode then it wouldn't continue to ping for six hours or so. But if something happened to the communications system or the crew, why would the automatic ping stop?
I'd think that if the sub had sudden decompression, if there were any USN subs in the area they may have heard the blast? But it's a big ocean and I'm not sure how far away something like that might be heard.
1,000nm radius +/- 500nm.
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