Irish engineer, father of modern submarine who designed and developed the submarine, the first underwater vessel
John Philip Holland (29 February 1840 – 12 August 1914), was an Irish engineer who designed and built the first submarine formally commissioned by the U.S. Navy, and the first Royal Navy submarine, the Holland 1.
He was a school teacher in Ireland, his country of birth but in 1873, emigrated in New Jersey, USA. In 1875, he offered a submarine design to the US navy but it was rejected as not practicable. Despite this rejection, he continued his experiments.