> I know the sea is vast. Yet we are able to navigate it consistently. I'm not an expert, but I think this is an incorrect assumption. We can navigate it decen

> I know the sea is vast. Yet we are able to navigate it consistently. I'm not an expert, but I think this is an incorrect assumption. We can navigate it decently on the surface (even then, plenty of ships sink/go missing each year [1]) but underwater is a whole different story. > Why is this vessel unable to stay in contact with its parent That is kind of the big question here. [1] https://en.wikipedia.org/wiki/List_of_shipwrecks_in_2022 https://en.wikipedia.org/wiki/List_of_shipwrecks_in_2022