In 1808, during the French occupation, Carl Hornig of Mannheim purchased the fortress from the French authorities and turned it into a way station for passing river traffic. Later, the Rheinschanze with its winter-proof harbour basin (created by a flood in 1824) was used as trading post. Hornig died in 1819, but Johann Heinrich Scharpff, a businessman from Speyer, continued Hornig's plans, which were then turned over to his son-in-law, Philipp Markus Lichtenberger, in 1830. Their activities marked the beginning of the civilian use of the Rheinschanze.