[losvedir]

While the physical trauma would have been instantaneous, they might have known it was going to happen. James Cameron just said in an interview[0] that they had a sensor system inside which detects when the hull is starting to fail, and that they probably had warning because they had dropped their weights to ascend.

[0] https://www.youtube.com/watch?v=rThZLhNF_xg

[vanattab]

How do we know the weights where dropped before the immplosion

[chiph]

Once they locate the wreckage, if the weights aren't nearby that's a strong sign they were detached before the implosion. They would have fallen to a different location on the seafloor than the hull because they're denser and have a smaller cross-section, thus not affected as much by the hydrodynamics during the fall.

[lamontcg]

I thought the drop weights were held on by electromagnets--essentially a dead-man switch kind of fail-safe. So therefore when the power failed due to the implosion the weights would drop.

[ikekkdcjkfke]

Not an expert, but seeing hydrolic press videos using carbon fibre it snaps instantly, also seeing ocean gate videos they don't cross weave the carbon fibre