OT:
The survival chances for Tinan's passengers are a mere 1%, and even if they are located, the likelihood increases only to 15%.
We currently lack the capability to rescue anyone in such a scenario.
That makes me wonder are we ready for the space exploration? How can we venture into the vast unknown when we haven't fully explored our own backyard?
I've read they had a safety mechanism in form of a timer that drops ballast automatically and makes the vessel go to surface.
They also had an inflatable balloon thing that they could use to resurface if there was no power or there was engine damage.
There's a chance they have resurfaced and are drifting somewhere waiting to be found but will die from lack of oxygen tomorrow because they can't open the hatch from the inside.