0 h 20 m, 1 jan 1888 ano - First Modern Electric Submarine

Descrição:

In 1888, the first functional military submarine named the Gymnote (by the French Navy). The 204-cell battery charged sub completed over 2,000 dives before being discarded for its limited range ability.

This event was significant because it set a path for all future subs that have proven to be extremely effective in both military purposes and scientific discovery.