Frankfurt is a prototype river icebreaker constructed by Hitzler Werft for icebreaking duties on the Elbe River, Oder River, and canals in Germany, operated by the Wasser und Schifffahrtsamt Eberswalde.She was built in 2002.Three further vessels, built to a similar design, were ordered by the Wasser und Schifffahrtsamt in 2009. As the lead ship of her class, models of the Frankfurt underwent testing in a large ice-tank laboratory.She cost 4.2 million euros.