Are we supposed to believe it doesn't have some kind of GPS? Seems odd. We are being distracted I'm sure. Thoughts?
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RF signals can't penetrate water, so no there's no GPS under water.
Same with bluetooth
That I didn't know, good to know that. You'd think they'd have some kind of way to locate though.
They locate it via it's sonar ping. When in close proximity they can even send extremely low bitrate mesages. However, they can't detect it. It probably lost power, or has been crushed due to depressurisation.
sonar, lidar