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Submarines

The history of submarines covers the historical chronology and facts related to submarines, the ships and boats which operate underwater. The modern underwater boat proposal was made by the Englishman William Bourne who designed a prototype submarine in 1578. Unfortunately for him these ideas never got beyond the planning stage. The first submersible proper to be actually built in modern times was built in 1620 by Cornelius Jacobszoon Drebbel, a Dutchman in the service of James I: it was based on Bourne's design. It was propelled by means of oars. The precise nature of the submarine type is a matter of some controversy; some claim that it was merely a bell towed by a boat. Two improved types were tested in the Thames between 1620 and 1624. In 1900, the U.S. navy was sold their first submarine by an Irish man named John Holland. From 1945 to 1955, tremendous changes were made for a great time when the first submarine was sent out to sail for the first time. The United States heavily depended on the submarines as a weapon of war when they were going to war with the Japanese.