[SheepHerdr]

Apparently they implemented 'seven safety systems to help it return to the surface', but whether those actually worked is questionable.

It doesn't exactly inspire hope to read that one of these 'systems' was to have the passengers 'tilt the sub by moving to each side of it releasing weights held in place on each side'.

https://www.bbc.com/news/world-us-canada-65965665

[ssnistfajen]

This reads like peak marketing since at least 5 of those 7 safety measures are just "drop weights" with extra steps, but I guess "three safety systems" sounds less sexy in promotional material.