The Whitehead torpedo was the first self-propelled or "locomotive" torpedo ever developed. It was perfected in 1866 by Robert Whitehead from a rough design conceived by Giovanni Luppis of the Austro-Hungarian Navy in Fiume. It was driven by a three-cylinder compressed-air engine invented, designed, and made by Peter Brotherhood. Many naval services procured the Whitehead torpedo during the 1870s, including the US Navy. This early torpedo proved itself in combat during the Russo-Turkish War when, on 16 January 1878, the Ottoman ship Intibah was sunk by Russian torpedo boats carrying Whiteheads, though this story has been disputed in one book. The term "torpedo" comes from the torpedo fish, which is a type of ray that delivers an electric shock to stun its prey. During the 19th century, an officer of the Austrian Marine Artillery conceived the idea of using a small boat laden with explosives, propelled by a steam or an air engine and steered by cables to be used against enemy ships; his papers came into the possession of Captain Giovanni Luppis upon his death. Luppis had a model of the device built; it was powered by a spring-driven clockwork mechanism and steered remotely by cables from land. Dissatisfied with the device, which he called the "coast-saver", Luppis turned to Robert Whitehead, who then worked for Stabilimento Tecnico Fiumano, a factory in Fiume. In about 1850 the Imperial Austrian Navy asked Whitehead to develop this design into a self-propelled underwater torpedo. Whitehead developed what he called the Minenschiff (mine ship): an -long, -diameter torpedo propelled by compressed air and carrying an explosive warhead, with a speed of and the ability to hit a target up to away. In 1868, Whitehead introduced a solution to the stability problem for his torpedo: Pendulum-and-hydrostat control, contained in its Immersion Chamber. The Austrian Navy bought the manufacturing rights to the Whitehead torpedo in 1869. By 1870 Whitehead's torpedoes were running at .