Hungarian inland ladder dredger Koros in 1921

After the First World War (1914-1918) lost by the German, Austro-Hungarian and Ottoman Empires was Walker D. Hines appointed as international arbitrator responsible for the ceding of tugs and other inland vessels by Germany, Bulgaria, Austria and Hungary to the Allied Powers. For Austria respectively Hungary were the Treaties of St. Germain and Trianon leading. Lists were made of the involved vessels including some details and what their fate was to be. A list dated Paris, France 2 August 1921 reported that prior to the end of the hostilities Hungary possessed over material for maintenance purposes on the Danube. This included the inland ladder dredger Koros still in possession of the GD (National Direction of Water service), horsepower 53 hp and lying at Ujvidek, Yugoslavia.

Source

Reports of International Arbitral Awards. Navigation on the Danube, 2 August 1921, volume 1. UN, 2006.