Turtle
Vessel
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Turtle was the world's first submersible vessel with a documented record of use in combat. It was built in 1775 by American David Bushnell as a means of attaching explosive charges to ships in a harbor, for use against the Royal Navy during the... Wikipedia
Launched: 1775
Length: 9.843′
Builder: David Bushnell
Propulsion: Hand-cranked propellers
Displacement: 91 kg (201 lb)
In service: 1775–1776
Laid down: 1775 249 years ago