The Turtle Submarine 1776, was the date of its first attack. It's target, the British 64-gun HMS Eagle-flagship of Admiral “Black Dick” Howe. The ship, under command of Capt. Henry Duncan, was moored with the rest of the British ships just north of Staten Island.
The Bushnell Turtle Submarine, was invented by David Bushnell in 1776.. He began the submarine revolution in the United States, when he started experimenting with explosives underwater. By the time hostilities arose between the colonies and Great Britain, Bushnell had perfected his explosives.