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Additional information and image credit for submarine design by David Bushnell (Yale class of 1775).

Diagram of David Bushnell's Turtle submarine

Diagram of David Bushnell's Turtle submarine

File:Turtle submarine 1776.jpg. Retrieved November 20, 2018 from Wikimedia Commons


David Bushnell (1742-1824) graduated from Yale in 1775 at the beginning of the American Revolutionary War. Bushnell designed and built the first submarine, a turtle-shaped vessel propelled under water by a single operator.

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