[joncrane]

Step 1: Build the submarine

Step 2: Don't go in the submarine

[moffkalast]

ROVs and AUVs indeed have the distinct benefit of not killing you when they implode.

[imglorp]

So many different ways to die in a submarine, so many failure modes. It's one thing to solve all the engineering problems you can identify. It's another to learn from all the failure modes everyone else has encountered.

[pjc50]

Step 3: if you do go in the submarine, don't go in a submarine built by a maverick billionaire/millionaire. https://en.wikipedia.org/wiki/Murder_of_Kim_Wall / https://en.wikipedia.org/wiki/Titan_submersible_implosion

[chrisdalke]

If you do find yourself in a situation where you are forced to ride in a billionaire's submarine, just make sure it's the billionaire who is fanatically obsessed with deep sea exploration...

https://en.wikipedia.org/wiki/Deepsea_Challenger