Nordenfelt class Ottoman submarine Abdülhamid (1886) was the first submarine in history to fire a torpedo while submerged. Two submarines of this class, Nordenfelt II (Abdülhamid, 1886) and Nordenfelt III (Abdülmecid, 1887) joined the Ottoman fleet. They were built in pieces by Des Vignes (Chertsey) and Vickers (Sheffield) in England, and assembled at the Taşkızak Naval Shipyard in Istanbul, Turkey.
Thorsten Nordenfelt (1 March 1842 – 8 February 1920), was a Swedish inventor and industrialist.
