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"Debris field" found near Titanic in search for missing sub, U.S. Coast Guard says
(www.cbsnews.com)
this post was submitted on 22 Jun 2023
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Sure, I'll bite.
Bluetooth is not powerful enough to punch through any part of that hull. Not the 5 inches of carbon fiber wrap, and forget about transmitting through the metal end-caps.
Those older bluetooth controllers are often stopped by an inch of wooden desk in their way.
For outside equipment, OceanGate would be forced to use a control method that is received by a machine inside the hull, then converted to point-to-point wireless to punch through the carbon fiber, with wires on either side. Or something similar to that.
So the Bluetooth has to be communicating to a machine inside the vessel.