EN
The article was written on the basis of the correspondence of the offi cials of Duchess Anna Radziwiłł-Sanguszko, whose lands belonged to the most extensive in the old Polish- Lithuania state. It discusses problems the duchess had to face connected with sending ships loaded with grain and potash to the harbours in Gdańsk and Königsberg in 1733 and selling the agricultural and forest products there. In Gdańsk a young Jew responsible for transport – Aronowicz – sold the grain too cheap (according to priests), which caused the duchess’s indignation. In Königsberg the merchants of the Saturguses and Fahrenheits occupied (arrested) the Radziwiłłs’ ships on account of the debt taken out by the Sapiehas – the former owners of part of the lands from which the goods originated. Nevertheless, a special envoy of the duchess Captain Karol Petersen led to a compromise. The article also discusses the organizational issues or river transport and difficult navigation conditions resulting from e.g. the low level of water.