Too much ink many bytes have already been devoted to exploding submarines. Please stop. The chatter that is … not the submarines, the hubris, the arrogance, the ignorance, the …. Let them all continue and let people climb into them and sink to the bottom of the ocean forever.
With two differences …
1] If they disappear .. nobody goes looking for them, unless they have paid in advance a deposit to cover such search and rescue operations.
2] The world pays as much attention to them disappearing as they do to the hundreds and thousands dying all over the world as they seek better lives.