EN
The paper presents an algorithm for preliminary calculation of mass and mass centreheight of hull structure of inland navigation ships. It was elaborated basing on require-ments of the Rules for the Classification and Construction of Inland Navigation Ships ofPolish Register of Shipping, with application of a simplified method of estimating mass ofhull plating stiffeners. The algorithm deals with the dimensioning of scantlings of structuralmembers of classical ships intended for shipping dry cargo, and dry and liquid bulk cargo-es; however it does not cover ships of entirely different structural arrangement such as roll--on-roll-off ships fitted with heavy decks, as the dimensioning of their scantlings is based on different models