2.Bathysphere or bathyscaphes such as the Trieste are able to dive to much deeper depths than a submarine because they are spherical, as opposed to the cylinder design of a submarine.
3.To pay homage to Piccard and Walsh, I'd taken this astonishing watch onboard my submersible: the Old Lady – the same prototype that these great pioneers had rigged on their bathyscaphe, the Trieste, in 1960.
4.While modern submersibles may even be able of reaching the depths of Challenger Deep, none have tried since the famous expedition of the Trieste bathyscaphe- yet today, surprisingly enough its NASA that is interested in very deep-diving submersibles.