Bushnell built his submarine, the "Turtle", in early 1776 and first used it in September that year.
David Bushnell built his 'Turtle' in 1776.
Bushnell's submarine was made of wood.
david bushnell
David Bushnell
David Bushnell
David Bushnell
It was invented by David Bushnell.
David Bushnell
David Bushnell was ingenious in inventing a submarine.......which today one of our most valuable Naval vessels.
David Bushnell .
David Bushnell
David Bushnell