Pyroscaphe was an early experimental steamship built by Marquis de Jouffroy d'Abbans in 1783. The first demonstration took place on 15 July 1783 on the river Saône in France. It was not really successful, since the machinery of the ship failed after fifteen minutes of work.
The Pyroscaphe was propelled by a double-acting steam machine and sidewheels, and was therefore a paddle steamer.
Specifications:
The Encyclopedia of Ships, ed. Tony Gibbons, Silverdale Books, 2002, ISBN 1-85605-591-4