PS Marion
1816 Launched
1816 David Napier's first marine engine, for the steamboat PS Marion, was completed early in 1816.
First steam boat to ply upon Loch Lomond was the Marion, of 57 tons. She was the first owned by David Napier, and driven by his first marine engine.
1817 After running for a year on the Clyde, she began service on Loch Lomond. Napier's connection with this service continued 33 years.