David Bushnell’s one man submarine had 2 hand-cranked screw propellers, a manual management lever connected to the rudder, foot operated pumps to let water in or send it out and a crudely-lit instrument panel.
As time pass, the submarine has developed dramatically, and currently it will submerge to an excellent depth, carrying harmful weapons (including long vary nuclear missiles) and keep below water for long periods of your time.
The invention of the submarine hasn’t had a lot of influence in our lives. However, it's modified the lives of the military. Ever since the primary war, submarine has been used for military functions and it's still a similar these days. though submarines tend to be slightly slow and have obvious manoeuvrability and safety issues, they're an honest machine for gathering intelligence.