(inspired by a question on reddit, I’ll post a reply too)
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The sub apparently had a regular “I am ok” ping as well as a way to transmit text messages. How did those work? And if they worked, why couldn’t they do more?
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I haven’t found an explanation, but photos show a trailing cable. The only two options I can think of that could work are
- cable (probably fiber, either way, a physical connection either to the mothership or a buoy)
- sonar (you can modulate data onto a sonar ping)
The reason why they stopped communicating is now (likely) known - looks like the sub imploded.
