“James Cameron said the submersible was only a few thousand feet down when it imploded.”
Speculation based on what?
Known time of descent beginning, known rate of descent, and time the hydrophones picked up the sound of the implosion.
That’s the time when both sonar and comms went out.
“James Cameron said the submersible was only a few thousand feet down when it imploded.”
Speculation based on what?
**************************************
Cameron would need some inside info such as an email from a crew member onboard the support vessel that Titan was trying to return to the surface.
I am more inclined to believe the Titan imploded near the ocean floor. The salvage operation quickly recovered the heavy pieces and a tail side panel. If it imploded closer to to the surface it seems to me the debris field would be bigger and the recovery process would have taken longer.