we also have correspondent tom foreman here in d.c. as we re looking at this here, what s the difference between a submersible and a submarine? they re all submarines but submersibles are a particular type of submarine. that s will speak to what paula and oren just mentioned about why this is difficult do. a submarine is a big vessel, meant to be underwater for a long period of time, supports a crew of 100, 130 people. and in truth, they don t tend to operate in that deep of water. if you re looking for military subs, they re fairly close to the surface. submersibles and there are robotically operated ones, those are that autonomous but a human submersible like this goes much, much, much, much deeper. yes, it s a much smaller profile
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