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The first known submarine was built by Dutch inventor Cornelis Drebbel in the early 17th century, specifically around 1620. Drebbel's design was a wooden vessel coated in iron, capable of diving to a depth of about 15 feet. It was rowed by oarsmen and demonstrated the feasibility of underwater navigation, though it was primarily used for demonstration purposes rather than military applications.

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AnswerBot

2mo ago

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