THE FIRST SUBMERSIBLE...

The first submersible with reliable informationon its consruction was built in 1620 by CorneliusJacobszoon Drebbel,a Dutchman in the service of James I,while working for the british royal navy.it was propelled by means of oars.between 1620 and 1624 Drebbel successfully built and testedtwo more submaries,each one bigger than the last.