The Turtle (also known as the American Turtle) was the first submarine to be used in combat. It was built in 1775 and used on September 6, 1776 in an unsuccessful attack against the HMS Eagle. It was invented by David Bushnell.
Turtle
David Bushnell .
The first Submarine was made by Cornelius Jacobszoon Drebbel, a Dutch Engineer in 1620. Otherwise, the first military submarine was made in 1775, designed by David Bushell.
That is David Bushnell's 'Turtle'
David Bushnell (1742-1824) - Creator of the Turtle, credited as the first military submarine
India's first submarine was INS CHAKRA nd first nuclear submarine is INS ARIHANT..
It's a famous military submarine...
Navy
The Confederate submarine 'H L Hunley' was the first submarine to sink an enemy ship
Wood was used to make the first submarine
INS- Arihant (first indigenous nuclear powered submarine),, INS- chakra (first nuclear submarine).
the Tank,submarine,and the helicopter.